INSECTS. Field Crop In-Depth Workshops on Insects and Diseases
|
|
- Damon Wilson
- 5 years ago
- Views:
Transcription
1 INSECTS Field Crop In-Depth Workshops on Insects and Diseases Producers and agribusiness professionals who want to know more than the basics about pest management will want to attend the Field Crop In-Depth Workshops on Insects and Diseases. The workshops will be held at the Crops Training Center, Northern Illinois Agronomy Research Center, near Shabbona, Illinois. The In-Depth Insects Workshop will be held on July 14, Emphasis will be on new technology, management strategies, and outlook for corn rootworms, European corn borer, potato leafhopper, bean leaf beetle, and grasshoppers. Beneficial insects also will be identified and discussed. Certified Crop Advisor credits (5.5 in IPM) have been approved for this workshop. FOR IMMEDIATE RELEASE No. 14 / June 25, 1999 Executive editor: Kevin Steffey, Extension Entomologist Available on the Web at For subscription information, phone , or acesnews@uiuc.edu In This Issue Development of Corn Rootworms Is Progressing, 133 Not Much Noise from First- Generation European Corn Borers, 134 Southwestern Corn Borers Are at It Again in Southern Illinois, 134 Japanese Beetles Observed Near the East Coast of Illinois, 135 Heads-Up for Spider Mites in Soybeans, 135 Watch for Potato Leafhoppers in Soybeans, 136 Early Summer Root Rots, 136 The In-Depth Disease Workshop will be held on August 19, The workshop will focus on field crop disease management; basics of disease identification; and recent research findings and strategies for short- and long-term management of sudden death syndrome (SDS), Sclerotinia white mold, and nematodes (both in corn and soybeans). Individuals attending are encouraged to bring one soil sample for screening for soybean cyst nematodes (SCN). Certified Crop Advisor credits (6.0 in IPM) have been approved for this workshop. The format for both workshops will consist of informal, interactive, classroom and in-field sessions. The programs are scheduled to start at 9:00 AM and adjourn by 3:30 PM. The preregistration fee for either of the workshops is $55 and is due one week before the program date. The late registration fee is $75. The fee includes course materials and lunch. Additional information and registration forms for either of these workshops are available from the Rockford Extension Center at (815) or Ellen Phillips at (630) , phillipse@mail.aces.uiuc.edu. Ellen Phillips Development of Corn Rootworms Is Progressing Some corn rootworm larvae in corn planted after soybeans Corn rootworm pupae observed near West Lafayette, Indiana Emergence of adult corn rootworms is imminent In last week s issue of the Bulletin (No. 13, June 18, 1999), Mike Gray discussed how to sample for corn rootworm larvae and summarized the questions people ask about assessing performance soil insecticides for control of corn rootworms. This is just a brief reminder to encourage you to make plans for assessing corn rootworm damage in July and to prepare you for the emergence of corn rootworm adults. 133
2 On June 16, Jeff Bunting, American Cyanamid Company, found some corn rootworm larvae in a cornfield in northern Ford County. The field had been planted to soybeans in Obviously, the problem with western corn rootworms in corn planted after soybeans has not gone away. (No, we really didn t think it would.) We are very interested in documenting where the problem exists to determine if this new biotype of western corn rootworm has extended its range north, west, or south in Illinois. The spread of this new biotype to the east occurred relatively rapidly; we are fortunate that the affected area in our state is still reasonably confined. However, we want to hear from you if you encounter the problem beyond the known affected counties: Champaign, DeWitt, Douglas, Edgar, Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston, Macon, McLean, Piatt, Vermilion, and Will. We suspect or have heard rumors that the problem has been verified in Christian, Coles, Logan, Moultrie, Sangamon, and Woodford counties. Please help us keep accurate records by reporting the problem. The only positive verification is the presence of rootworm larvae in the field or corn rootworm larval damage to the roots. Try to ignore all of the claims of rootworm problems that actually are problems associated with other causes (such as wind-lodged corn). We will assess many fields of corn planted after soybeans for rootworm larval damage this summer. In fact, we have an ambitious on-farm research effort under way, an effort that involves many extension personnel, farm managers, company representatives, consultants, and growers. We are attempting to refine our current economic injury index and determine the extent of the problem in Illinois. As the data accumulate, we will inform you of our findings. The entomologists at Purdue University have found at least one corn rootworm pupa in one of their plots near West Lafayette, Indiana. This means that emergence of corn rootworm adults is imminent. In fact, I suspect that astute observers could find them in some fields in southern or south central Illinois right now. By the time you receive this issue of the Bulletin, corn rootworm adults may be emerging in central counties. Let us know when you find the first adult. And as the summer progresses, let us know about the densities of these pests you find. Kevin Steffey Not Much Noise from First-Generation European Corn Borers Highlight: Economic infestations of firstgeneration European corn borers have not been noted thus far. Apparently everyone is out scouting for first-generation European corn borers, but most people are finding low levels of injury and only a few larvae in cornfields. Dennis Epplin, Extension Educator, Crop Systems in the Mt. Vernon Extension Center, observed newly hatched corn borer larvae in Jefferson County late during the week of June 14. Mike Roegge, Extension Unit Educator, Crop Systems in Quincy, is still finding egg masses in cornfields in western Illinois. He reported that infested fields are not widespread in his area. Brian Oester, Pioneer Hi-Bred International, reported that numbers of European corn borers in Clark, Crawford, and Lawrence counties are still quite low. Many fields have no sign of infestation, and the most injury he observed in seed cornfields late in the week of June 14 was 3 percent. At that time, he was finding first through fourth instars. Kevin Nelson, Utica Elevator Co., observed a very small infestation (1 percent of the plants infested) in LaSalle County during the same week. And, believe it or not, I had an opportunity to spend time in one of our research plots on June 21! Although I could find shot holes in leaves and second and third instars in the whorls, the number of plants infested was quite low. I also observed a third instar in a midrib, so stalk tunneling should be occurring right now. We gave you the facts on corn borer development, scouting, management worksheet, and suggested insecticides in issue no. 11 (June 14, 1999) of this Bulletin. It s only a brief matter of time before we know, with hindsight, the full extent of our first go with European corn borers. After that, we can start guessing about what the second generation might have in store for us. Kevin Steffey Southwestern Corn Borers Are at It Again in Southern Illinois Injury by first-generation southwestern corn borers is evident in southern counties. Some stalk-boring activity has occurred. Economic damage caused by firstgeneration southwestern corn borers does not occur commonly. Apparently southwestern corn borers have decided to establish residence in southern Illinois. It s not that we haven t experienced problems caused by this important pest of corn in the past; it s just that southwestern corn borers have become much more obvious in recent years. Maybe our string of mild winters has enhanced their survival. Whatever the case may be, corn growers and other agriculturists in southern counties need to be on the lookout for this insect. Ron Hines, Senior Research Specialist at the Dixon Springs Agricultural Center, continues to be our sentinel for southwestern corn borers. According to cone-trap captures in Massac County, peak moth flight occurred during the first week of June. Both Ron and Dennis Epplin, Extension Educator, Crop Systems at the Mt. Vernon Extension Center, observed first-generation southwestern corn 134
3 borers feeding in 28-inch-tall corn at the Ewing field in Franklin County on June 21. Ron reported that about 10 to 15 percent of the non-bt corn plants were infested, some with as many as five to six larvae per plant. According to most experts on the subject, economic infestations of firstgeneration southwestern corn borer are uncommon and are restricted to corn planted near undisturbed corn stubble fields where adults emerge in the spring. Nevertheless, some entomologists have established 35 percent whorl-feeding injury as a static economic threshold, so the presence of first-generation borers bears watching. Larvae attacking whorl-stage plants feed on developing leaves in the whorl. Injury is evident as leaves unroll from the whorl. Leaf injury ranges from pinhead-sized holes and small circular lesions, or windows, on leaf surfaces to large, elongated holes. Third instars leave the whorl, crawl down the stalk, and tunnel into the plant, primarily between nodes. Ron Hines found some third and fourth instars bored into corn stalks at the Ewing field. Very large densities may cause economic yield loss. Female southwestern corn borers deposit eggs in masses of two to three on upper and lower surfaces of corn leaves. Eggs are yellow-green when first deposited, but within 36 hours they become white, with three broken orange-red lines across each egg. The eggs slightly overlap, much like fish scales. Southwestern corn borer larvae are white with a pattern of large, raised black tubercles on each body segment and are 1 to 1 1/4 inches long when fully grown. The head of first through third instars is black, whereas the head of older larvae is brown. Remember, unless densities are quite large, economic damage by first-generation southwestern corn borers is not common. Insecticides seldom are justified. However, we are interested in learning more about this pest in Illinois, so keep us informed if you encounter infestations. Kevin Steffey Japanese Beetles Observed Near the East Coast of Illinois Japanese beetles have been observed in corn in Lawrence County. Watch for Japanese beetles in both corn (especially during pollination) and soybeans. We ve discussed Japanese beetle grubs in previous issues of this Bulletin, but now it s time to talk about the showier and usually more noticeable adult, the insect that seems to scare some folks. Japanese beetles begin to emerge at about the same time as corn rootworm adults emerge, so it is not surprising that someone has observed them already. Rick Scranton with Monsanto Company found about three to four Japanese beetles per plant in a cornfield in Lawrence County on June 21. The corn was at growth stage V-10 through V-12. Although Rick did not see any apparent feeding injury to the corn leaves, the presence of so many beetles bears watching as the corn gets close to tasseling and silking. The adult Japanese beetle is shiny metallic green with hard, bronzecolored wing covers. Along each side of the abdomen, just below the wing covers, are six tufts of white hair. The adult is about 1/2 inch long. The beetles may feed on leaves if silks are not available; injured leaves appear skeletonized or lacy, similar to injury caused by corn rootworm beetles. However, leaf feeding seldom is economically important. More importantly, Japanese beetle adults may clip a sufficient number of silks to prevent proper pollination. If Japanese beetles are found in a cornfield, five randomly selected plants in each of five areas of the field should be examined and the number of beetles found on each plant should be recorded. The length of silks remaining on each plant and the maturity of the silks (i.e., no silks, green silks, some brown silks, or all brown silks) should be estimated. Control with an insecticide may be warranted if silks are clipped to less than 1/2 inch, fewer than 50 percent of the plants have been pollinated, and beetles are feeding. A rule-of-thumb economic threshold is three or more beetles per ear. Insecticides suggested for control of Japanese beetles are Penncap-M* at 2 to 4 pt per acre, Sevin XLR Plus at 2 to 4 pt per acre, and Warrior T* or 1E* at 2.56 to 3.84 oz per acre. (The use of products followed by an asterisk is restricted to certified applicators.) Japanese beetles have a wide host range and feed on many other plants, including soybeans, fruits, and flowers. As you begin to increase the frequency of scouting in soybeans, keep your eyes peeled for Japanese beetles. Don t overreact when you find them, but don t forget about them, either. Kevin Steffey Heads Up for Spider Mites in Soybeans Spider mite problems are showing up in soybeans in Ohio. Watch for spider mites building up at the edges of soybean fields. No, we haven t received any reports of twospotted spider mites showing up in soybeans, but I thought you might want to know what s happening in at least one nearby state. Ron Hammond, research entomologist at Ohio State University, contacted me on June 21 to find out if we were experiencing dry weather and spider mite problems associated with droughty conditions. I told him that we had had plenty of moisture in most areas of Illinois and had not heard anybody talking about spider mites. Ron informed me that much of Ohio is dry and that spider mites are showing up in isolated areas of soybean fields throughout the state. He indicated that this early incidence of spider mites in soybeans was reminiscent of occurrences in
4 Most of us will not soon forget the devastation caused by twospotted spider mites in Although I am not suggesting that anything like 1988 will happen again in Illinois in 1999, I do want to make you aware of developments to the east so that you can be vigilant. If rainfall ceases, spider mite populations can build rapidly, especially if the weather gets hot. As you scout soybeans for other pests and problems, always give a look to the plants near the edges of the fields. If spider mite densities begin to increase, you should notice them first at the field edges. Look for yellowing plants that appear sandblasted, and then look for the mites and webbing on the undersides of the leaves. If you think you have found some spider mites, let us know right away; we would want to get the word out quickly. Kevin Steffey Watch for Potato Leafhoppers in Soybeans Numbers of potato leafhoppers in alfalfa are still high. Watch for symptoms of potato leafhopper injury to soybean leaves. Much has been said already about the intensity of infestations of potato leafhoppers in alfalfa. Many people have reported finding large numbers of these pests causing noticeable and, in some instances, excessive damage. Spraying to control potato leafhoppers in alfalfa has been ongoing throughout much of June. However, don t forget that potato leafhoppers can cause injury to soybeans, too. Although the extent of injury to soybeans caused by leafhoppers is still debatable, noticeable injury will catch your attention. The symptoms of leafhopper injury to soybean leaves are similar to symptoms of injury to alfalfa. The edges of injured leaves turn yellow and may eventually appear burned. Injured leaves may pucker or curl up, and severely damaged rows may be stunted. Soybean fields most at risk are those adjacent to or near alfalfa fields that have been cut. However, if densities of potato leafhoppers are high this year, some soybean fields not even within sight of an alfalfa field could be injured. So stay alert. Economic losses caused by potato leafhoppers feeding on vegetativestage soybeans probably are not common. However, the presence of leafhoppers in soybeans bears watching. For susceptible varieties, control in blooming soybeans may be warranted when you find six or more leafhoppers per plant. During early seed formation, control may be warranted if you find 13 or more leafhoppers per plant. Stay tuned to find out if economic infestations of potato leafhoppers develop in soybeans. Kevin Steffey PLANT DISEASES Early Summer Root Rots The most frequent disease concern this week has been about root rots in soybeans. Primarily, Rhizoctonia and Fusarium root rots have been the culprits. These two rots cause a dry-type canker at the soil line, usually extending down the entire root system. I say dry just to distinguish these types of root rots from wet rots such as Pythium or Phytopthora, in which the roots are typically slimy; roots infected by Fusarium or Rhizoctonia may still be a little mushy and not completely desiccated. Rhizoctonia root rot. The soilborne fungus Rhizoctonia solani causes Rhizoctonia root rot. Infection by Rhizoctonia alone typically will cause reddish or purple lesions at the soil line. A general rot of the taproot may also occur. Plants infected by Rhizoctonia usually make an attempt to reroot, so if soil moisture is adequate, the plant may recover. 136 Typically Rhizoctonia is favored by moist conditions at planting followed by some stressful condition that slows down the growth of the root system. Dry weather as the plants begin to emerge and grow is probably the most common environmental factor leading to infection by Rhizoctonia. Other stresses include compaction or herbicide injury. The picture becomes a little muddled at this point, especially if the stress is from a factor other than weather; yes, you may have root rot in the headlands where compaction is likely, but the disease probably wouldn t have gotten a good hold on the root system if the compaction wasn t there and the plants were actively growing. It is the same sort of situation if herbicide damage has slowed the growth of the plant. Fusarium root rot. Fusarium root rot caused by Fusarium solani doesn t cause the same diagnostic lesions as Rhizoctonia. It typically causes a more generalized dry rot of the root system. You would be hard pressed, though, to tell them apart in the field. This situation is usually compounded by the observation that Fusarium and Rhizoctonia often occur together. The same conditions that favor infection and disease development of Rhizoctonia also favor Fusarium. When infection by both pathogens occurs together, the condition is called Fusarium root rot complex. Stand reduction can occur from infection by these root rots, but significant losses typically occur only when stress to the crop is present. If you used a fungicide seed treatment active against these root rots, why might you still have infection? The explanation for this is that the fungicide does not remain active in the seed zone for a prolonged period of time. So if environmental conditions develop or are already present that slow growth approximately 10 days after planting, depending on the compound, the diseases may become active.
5 Management options are pretty limited at this point in the season. If the plants are showing some root regrowth, cultivation may put some soil up around the base of the stem and further encourage root growth; this is not a feasible option in drilled or no-till soybeans, though. Soybean cyst nematode. Start looking for symptoms and signs of soybean cyst nematode (SCN). Aboveground symptoms of leaf yellowing and some stunting are just starting to show up. At a scouting clinic in Piatt County, I was able to find white female cysts on soybean roots. If you see areas of the field that appear to have nutrient deficiency symptoms, don t forget to gently dig up the roots and have a look; SCN may be the problem. Suzanne Bissonnette Contributing Authors Suzanne Bissonnette (bissonnettes@mail.aces.uiuc.edu), Champaign Extension Center, (217) Ellen Phillips (phillips@mail.aces.uiuc.edu), Rockford Extension Center, (815) Kevin Steffey (ksteffey@uiuc.edu), Extension Entomology, (217)
6 U of I Extension Newsletter Service University of Illinois at Urbana-Champaign 528 Bevier Hall, MC S. Goodwin Avenue Urbana, IL Presorted First Class Mail U.S. Postage Paid Permit No. 75 Champaign, IL Return Service Requested The Pest Management & Crop Development Bulletin is brought to you by University of Illinois Extension and Information Technology and Communication Services, College of Agricultural, Consumer and Environmental Sciences, University of Illinois at Urbana-Champaign. This newsletter is edited by Stacey Krejci and formatted by Oneda VanDyke, ACES/ITCS. Helping You Put Knowledge to Work State County Local Groups U.S. Department of Agriculture Cooperating University of Extension provides equal opportunities in programs and employment. 138
INSECTS. Corn Rootworm Larval Injury Evaluated in First-Year Cornfields
INSECTS Corn Rootworm Larval Injury Evaluated in First-Year Cornfields In late July, Susan Ratcliffe, Extension entomologist, coordinated a large root-retrieval project with producers, numerous agribusiness
More informationGAINES COUNTY IPM NEWSLETTER Manda G. Cattaneo, Extension Agent - IPM 101 S. Main RM B-8. Seminole, TX 79360
GAINES COUNTY IPM NEWSLETTER Manda G. Cattaneo, Extension Agent - IPM 101 S. Main RM B-8 http://gaines-co.tamu.edu Seminole, TX 79360 http://www.tpma.org (432)758-6669 office http://ipm.tamu.edu (432)758-6662
More informationInsecticides Labeled for Control of Bean Leaf Beetle, Mexican Bean Beetle, and Green Cloverworm. Amount product per acre
Insect Management in Soybeans 2016 Joanne Whalen Extension IPM Specialist and Bill Cissel, Extension IPM Agent University of Delaware ( adapted from VA Pest Management Guide, section written by D Ames
More informationManaging Soybean Cyst Nematode
MANAGEMENT MATTERS SERIES Tips to help North Carolina soybean growers increase yield & profits Managing Soybean Cyst Nematode The Invisible Yield Robber MANAGEMENT MATTERS SERIES > How can you test for
More informationArkansas Fruit and Nut News Volume 5, Issue 6, 13 July 2015
Arkansas Fruit and Nut News Volume 5, Issue 6, 13 July 2015 Upcoming Events Texas Pecan Growers Association Annual Conference online registration (Link): July 12-15, 2015, Frisco, TX; Contact (979) 846-3285
More informationTHE PEST NAGEME NT GUIDE
THE PEST MANAGEMENT The Canola Pest Management GUIDE Guide Introduction Canola pest control starts here In this small but mighty guide, you ll find everything you need to correctly identify, scout and
More informationScouting for Soybean Aphid
JUNE 2015 Scouting for Soybean Aphid Robert Koch, Extension Entomologist Bruce Potter, IPM Specialist IDENTIFICATION Soybean aphids are small (1/16 inch or less), softbodied insects that use piercing-sucking
More informationKansas State University Extension Entomology Newsletter
Kansas State University Extension Entomology Newsletter For Agribusinesses, Applicators, Consultants, Extension Personnel & Homeowners Department of Entomology 123 West Waters Hall K-State Research and
More informationMimosa Webworm in Honeylocust:
July 25, 2003 No. 17 Mimosa Webworm in Honeylocust: This is the time of year when many brown patches are seen scattered through out the green canopies of thornless honeylocust species which line many streets
More informationFlea Beetle Field Scouting Guide
Flea Beetle Field Scouting Guide INTRODUCTION Flea beetles are the most significant insect pest affecting canola production on the Prairies. Every year, they cost growers millions of dollars in yield,
More informationEAR AND KERNEL ROTS. When to look for: Mid-August to October (and during storage)
EAR AND KERNEL ROTS When to look for: Mid-August to October (and during storage) Reduction in yield and grain quality due to infection by fungi of ears and kernels both during the growing season, and while
More informationPredicting Pest Activity with Degree-Day Models
Predicting Pest Activity with Degree-Day Models Outline Temperature effects on insect and plant biology Degree-days Models How forecasting helps crop management Where to find resources Insect Biology Insects
More informationFinal Report Aphid monitoring and virus testing in strawberries
Final Report Aphid monitoring and virus testing in strawberries 15 February 2017 Prepared for: Horticulture Nova Scotia 32 Main St Kentville, NS B4N 1J5 Prepared by: Jennifer Haverstock Small Fruit Specialist
More informationCotton Comments OSU Southwest Oklahoma Research and Extension Center Altus, OK 2018 Current Situation
Cotton Comments OSU Southwest Oklahoma Research and Extension Center Altus, OK July 26, 2018 Volume 8 No.7 2018 Current Situation The 2018 drought continues with 87.62 percent of the state in drought,
More informationVolume 21, Number 10. June 4, Contents. Current degree day accumulations. Upcoming pest events. Current degree day accumulations
Volume 21, Number 10. June 4, 2013. Contents Current degree day accumulations Upcoming pest events Orchard radar apple insect key dates Upcoming Meetings The way I see it Insects Diseases Horticulture
More informationAGVISE Laboratories Established 1976
AGVISE Laboratories Established 1976 John Lee: Soil Scientist Northwood Benson Tissue and Soil Testing Together Help Make Better Decisions What is Plant Analysis Snap Shot in the life of a plant A report
More informationTree Fruit IPM Advisory: June 20 th, 2006
Tree Fruit IPM Advisory: June 20 th, 2006 Past IPM advisories are archived at: http://extension.usu.edu/cooperative/ipm/index.cfm/cid.610/ **********News Alert!********** It is now time to put out pheromone
More informationLoren Giesler, Nebraska Extension Plant Pathologist John Wilson, Nebraska Extension Educator Burt Co. Sclerotinia stem rot (White Mold)
Loren Giesler, Nebraska Extension Plant Pathologist John Wilson, Nebraska Extension Educator Burt Co. Sclerotinia stem rot (White Mold) 1 Sclerotinia stem rot (White Mold) Challenges with White Mold Control
More informationVolume XII, Number 14 August 6, Late Blight Management in the Columbia Basin. Updates on Potato Psyllid and Zebra Chip (ZC)
Research & Extension for the Potato Industry of Idaho, Oregon, & Washington Andrew Jensen, Editor. ajensen@potatoes.com; 509-760-4859 www.nwpotatoresearch.com Volume XII, Number 14 August 6, 2012 Late
More informationNutrient Deficiencies and Application Injuries in Field Crops
Extension and Outreach Publications Extension and Outreach 4-2010 Nutrient Deficiencies and Application Injuries in Field Crops John E. Sawyer Iowa State University, jsawyer@iastate.edu Follow this and
More informationKelly Young Horticulture Agent University of Arizona Cooperative Extension, Maricopa County
Kelly Young Horticulture Agent University of Arizona Cooperative Extension, Maricopa County 1. Yes 2. No 50% 50% 1 2 1. Determine what is normal for the plant 2. Inquire about irrigation practices 3. Identify
More informationThe soybean cyst nematode (SCN), Heterodera glycines, is the number one yield reducer for
501 THE SOYBEAN CYST NEMATODE PROBLEM The soybean cyst nematode (SCN), Heterodera glycines, is the number one yield reducer for soybean growers throughout the United States. Estimated yield losses due
More informationKern County Vegetable Crops
Kern County Vegetable Crops November 2012 Flea Beetle Damage being Misdiagnosed as Cavity Spot in Carrots Joe Nunez and David Haviland UC Cooperative Extension, Kern Co. For the past few years carrot growers
More informationMANAGEMENT. Biological. Chemical. Grazing
MANAGEMENT Biological Common locoweed-feeding insects... 2 Understanding the locoweed weevil s life history and damage potential... 6 Locoweed weevils prefer certain varieties of locoweed... 8 Are rangeland
More informationSaskatoon fruitinfesting
Saskatoon fruitinfesting insects Northwest Michigan Orchard & Vineyard Show January 18, 2017 Dr. Duke Elsner, Small Fruit Educator Michigan State University Extension elsner@msu.edu 231-922-4822 Sampling
More informationGlyphosate Efficacy on Giant Ragweed Infested With European Corn Borer
Glyphosate Efficacy on Giant Ragweed Infested With European Corn Borer Eric J. Ott*, William G. Johnson, John L. Obermeyer, Purdue University, West Lafayette, IN, and Dan J. Childs, Diener Seeds, Reynolds,
More informationRELATIONSHIP BETWEEN SDS AND SCN IN COMMERCIAL SOYBEAN FIELDS IN WISCONSIN 1. Introduction
RELATIONSHIP BETWEEN SDS AND SCN IN COMMERCIAL SOYBEAN FIELDS IN WISCONSIN 1 David Marburger 2, John Gaska 2, Shawn Conley 2, Paul Esker 3, Ann MacGuidwin 4, and Damon Smith 4 Introduction Soybean Cyst
More informationInsect Pests of Canola. Dale Whaley
Insect Pests of Canola Dale Whaley dwhaley@wsu.edu What We Want! (2) Groups of Canola Pests 1) Insects Pests: - Cabbage Seedpod Weevil - Flea Beetle - Aphids - Cabbage Aphid - Turnip Aphid - Lygus Bug
More information2006- Foliar insecticide effects on soybean aphid and soybean yield. Summary Background Objective Site and application description
2006- Foliar insecticide effects on soybean aphid and soybean yield. Bruce Potter, Jeff Irlbeck, Jodie Getting University of Minnesota Southwest Research and Outreach Center Summary Insecticides were applied
More informationOn the Radar August 26 th, 2016
On the Radar August 26 th, 2016 Status by Crop Corn: mid to late R5 Soybean: R6 Potato (full season): Lots of fields maturing prior to vine kill, some fields dug green, most fields to be vine killed soon.
More informationDORIAN GATCHELL JANUARY 5, 2016 GRANITE FALLS, MN JANUARY 6, WATERTOWN, SD JANUARY 7, GRAND FORKS, ND
SCN Do We Need To Worry More About Future Issues? DORIAN GATCHELL JANUARY 5, 2016 GRANITE FALLS, MN JANUARY 6, 2016 - WATERTOWN, SD JANUARY 7, 2016 - GRAND FORKS, ND Agvise Laboratories 2016 Winter Seminar
More informationREPORT TO THE AGRICULTURAL RESEARCH FOUNDATION FOR THE OREGON PROCESSED VEGETABLE COMMISSION December 2010 Project Title: Management of Fusarium
REPORT TO THE AGRICULTURAL RESEARCH FOUNDATION FOR THE OREGON PROCESSED VEGETABLE COMMISSION December 21 Project Title: Management of Fusarium diseases of sweet corn in the PNW: microflora influence on
More informationCitrus Disease ID and Control. Ben Faber UC Cooperative Extension
Citrus Disease ID and Control Ben Faber UC Cooperative Extension bafaber@ucanr.edu Disease Biotic (Abiotic) ENVIRONMENT Predisposing TIME HOST Susceptible PATHOGEN Virulence ABIOTIC environmental factors
More informationSTAR Student Test Questions Big Beetle Buzz. 1 From the information provided in the selection, the reader can conclude that ox beetles
STAR Student Test Questions Big Beetle Buzz 1 From the information provided in the selection, the reader can conclude that ox beetles A prefer to live in rocky habitats B make a loud buzzing sound when
More informationApplication of Real Time PCR for Detection And Identification of Soybean Pests in Michigan
Application of Real Time PCR for Detection And Identification of Soybean Pests in Michigan Project Number: Team Leader: GR03-004 Patrick Hart, Michigan State University Department of Plant Pathology Objectives
More informationField Identification Guide
Field Identification Guide Horse chestnut leaf miner Photograph: Ana Pérez-Sierra, Forest Research Funded by the EU s LIFE programme Horse chestnut leaf miner The horse chestnut leaf miner moth (HCLM;
More informationHERE ARE SOME ANSWERS TO OUR CUSTOMERS MOST OFTEN ASKED QUESTIONS ABOUT Calcium-25
HERE ARE SOME ANSWERS TO OUR CUSTOMERS MOST OFTEN ASKED QUESTIONS ABOUT Calcium-25 1. What is Calcium-25? See also Table of Contents pages (2013) Calcium-25 is a unique crop yield-enhancing supplement
More informationUpdate on Black Leg Disease of Canola John Damicone, Extension Plant Pathologist
Entomology and Plant Pathology, Oklahoma State University 127 Noble Research Center, Stillwater, OK74078 405.744.5527 Vol. 10, No. 3 http://entoplp.okstate.edu/pddl/ Mar 3, 2011 Update on Black Leg Disease
More informationProceedings of the 2007 CPM Short Course and MCPR Trade Show
Proceedings of the 2007 CPM Short Course and MCPR Trade Show December 4 6, 2007 Minneapolis Convention Center Do not Reproduce or Redistribute Without Written Consent of the Author(s) The Application and
More informationPulse disease update for Syama Chatterton, Mike Harding, Robyne Bowness, Kan-Fa Chang Agronomy Update January 9-10, 2018, Red Deer, AB
Pulse disease update for 2017 Syama Chatterton, Mike Harding, Robyne Bowness, Kan-Fa Chang Agronomy Update January 9-10, 2018, Red Deer, AB Overview Root rot surveys in 2017 Distribution of pathogens in
More informationManaging Soybean Cyst Nematode with the Soil Test and Crop Rotation
Brought to you by AGRIS Co-operative and Wanstead Farmers Co-operative Volume No.1, Issue Number 15, September 16, 2009 Managing Soybean Cyst Nematode with the Soil Test and Crop Rotation By Dale Cowan
More informationAn IPM 1 Approach to Managing Herbicide Resistant Ryegrass in Northeast Texas. October, 2014 J. Swart, A. Braley, R. Sutton, S. Stewart, D.
An IPM 1 Approach to Managing Herbicide Resistant Ryegrass in Northeast Texas. October, 2014 J. Swart, A. Braley, R. Sutton, S. Stewart, D. Reid 2 BACKGROUND Annual ryegrass (Lolium multiflorum) is the
More informationPlant Disease and Insect Advisory
Plant Disease and Insect Advisory Entomology and Plant Pathology Oklahoma State University 127 Noble Research Center Stillwater, OK 74078 Vol. 7, No. 25 http://entoplp.okstate.edu/pddl/ July 10, 2008 Wheat
More informationDesigning Research and Demonstration Tests for Farmers Fields
Designing Research and Demonstration Tests for Farmers Fields Prepared by Richard F. Davis, Extension Nematologist; Glen H. Harris, Extension Agronomist; Phillip M. Roberts, Extension Entomologist; and
More informationBiological Control of Two Avocado Pests Amorbia cuneana and omnivorous looper on avocado can be controlled by parasite
California Agriculture. 1985. 39(11-12):21-23. Biological Control of Two Avocado Pests Amorbia cuneana and omnivorous looper on avocado can be controlled by parasite Earl R. Oatman and Gary R. Platner
More informationUsing Tissue and Soil Tests Together Helps Make Better Decisions. John Lee Soil Scientist AGVISE Northwood, ND
Using Tissue and Soil Tests Together Helps Make Better Decisions John Lee Soil Scientist AGVISE Northwood, ND Winter Wheat Tissue Demo Northwood, ND Prevent Plant field from 2011 Winter wheat seeded late
More informationCucurbit Downy Mildew Early Warning Scouting Program Project Report October 2007
Cucurbit Downy Mildew Early Warning Scouting Program Project Report October 2007 Elaine Roddy, Vegetable Crops Specialist OMAFRA, Ridgetown During the summer of 2007, forty cucurbit fields across southwestern
More informationTHE RIGHT SEEDS. THE RIGHT PROTECTION.
THE RIGHT SEEDS. THE RIGHT PROTECTION. Acceleron Seed Applied Solutions and Monsanto BioAg brands together provide an advanced portfolio of products that can provide more consistent protection for your
More informationDelivering the Proven Performance of Three Industry-leading Technologies
Delivering the Proven Performance of Three Industry-leading Technologies With two highly effective modes of action plus a Zeon Concentrate formulation, Endigo ZC insecticide provides more robust and complete
More informationCydia pomonella. Do You Know? Hosts. Orchard IPM Series HG/Orchard/08 Codling Moth. by Diane G. Alston and Michael E. Reding Adult Codling Moth
Orchard IPM Series HG/Orchard/08 Codling Moth Cydia pomonella by Diane G. Alston and Michael E. Reding Adult Codling Moth Michigan State University Do You Know? Major pest of apple and pear in Utah. Damaging
More informationAgronomy Notes Vol 30, No EARLY MATURING VARIETIES AND SOYBEAN CYST NEMATODES: WILL THIS MARRIAGE WORK?
Agronomy Notes Vol 30, No. 7 1997 EARLY MATURING VARIETIES AND SOYBEAN CYST NEMATODES: WILL THIS MARRIAGE WORK? C.C. STEELE AND L.J. GRABAU INTRODUCTION Soybean cyst nematode (SCN) is widely distributed
More informationCodling moth (CM) is becoming an increasing problem
Testing the PETE Insect Development Prediction Model to Limit the Resurgence of Codling Moth in Apples 7 Deborah Breth Cornell Cooperative Extension- Lake Ontario Fruit Program Albion, NY This project
More informationBMSB impact on vegetable and field crops in the Mid- Atlantic and research plans for 2011
BMSB impact on vegetable and field crops in the Mid- Atlantic and research plans for 2011 Galen P. Dively Department of Entomology DE - Joanne Whalen, Bill Cissel VA - Ames Herbert, Tom Kuhar, Kathy Kamminga,
More informationFusarium root rot of soybean occurrence, impact, and relationship with soybean cyst nematode
Proceedings of the Integrated Crop Management Conference Proceedings of the 22nd Annual Integrated Crop Management Conference Dec 1st, 12:00 AM Fusarium root rot of soybean occurrence, impact, and relationship
More informationCotton/Soybean Insect Newsletter
Cotton/Soybean Insect Newsletter Volume 13, Issue #12 Edisto Research & Education Center in Blackville, SC 20 July 2018 Pest Patrol Alerts The information contained herein each week is available via text
More information2017 ILeVO Trial Harvest Report
2017 ILeVO Trial Harvest Report Site number: 2 County: Lincoln Extension Contact Charles Ellis, Agricultural Engineer Results Summary Whole strip yields indicate ILeVO increased yield 4.2 bushels/acre
More informationRoot Rot Complex in Western Canada where are we at with Fusarium, Aphanomyces, and Phytophthora
Root Rot Complex in Western Canada where are we at with Fusarium, Aphanomyces, and Phytophthora Syama Chatterton, Sabine Banniza, Robyne Bowness, Mike Harding, Bruce Gossen, Debra McLaren November 8, 2017
More informationMaking codling moth mating disruption work in Michigan: Adopting an area-wide approach to managing codling moth in Michigan apple production
Fruit Crop Advisory Team Alert Vol. 20, No. 17, September 6, 2005 Making codling moth mating disruption work in Michigan: Adopting an area-wide approach to managing codling moth in Michigan apple production
More informationDetermining Impact of Third Generation Codling Moth, and Emergence Pattern of Overwintered Moths
Determining Impact of Third Generation Codling Moth, and Emergence Pattern of Overwintered Moths W. W. Barnett University of California Kearney Agricultural Center Parlier, California 93648 Cooperators:
More information2017 Soybean Insect Control Recommendations
2017 Soybean Insect Control Recommendations Introduction Many different insects can be found on soybeans in Tennessee. Some are detrimental, while others are beneficial. The most economical and effective
More informationLYGUS BUG MANAGEMENT IN SEED ALFALFA. Eric T. Natwick and M. Lopez 1 ABSTRACT
LYGUS BUG MANAGEMENT IN SEED ALFALFA Eric T. Natwick and M. Lopez 1 ABSTRACT Lygus bugs, Lygus spp., are a common pest of alfalfa grown for seed in California. Alfalfa seed producers and their pest control
More informationEvaluation of Soybean Varieties Resistant to Soybean Cyst Nematode in Iowa 2009
Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode in Iowa 2009 Aerial view of SCN-resistant soybean variety trial in central Iowa Gregory L. Tylka, Gregory D. Gebhart, and Christopher
More informationVegNet Vol. 12, No. 3, March 22, 2005
VegNet Vol. 12, No. 3, March 22, 2005 In This Issue In This Issue 1. Corn Flea Beetle & Stewarts Bacterial Wilt Disease of Sweet Corn, Predictions and Management for Ohio in 2005 2. College of Nursing
More informationCrop Staging guide FungiCideS
Crop Staging Guide Fungicides Take a stand. Stop disease before it starts. Once yield is lost to disease, it s gone forever. There s no cure. The best way to prevent this yield loss is to stop disease
More informationA 2015 multi-site field study on the effects of seed treatment on soybean yield and Soybean Cyst Nematode reproduction
A 2015 multi-site field study on the effects of seed treatment on soybean yield and Soybean Cyst Nematode reproduction Bruce Potter 1, Senyu Chen 2, Phil Glogoza 1, Dean Malvick 2, and Ryan Miller 1 Figure
More informationFoliar fungicide effects on soybean disease suppression, senescence and yield I.
Foliar fungicide effects on soybean disease suppression, senescence and yield I. Bruce Potter, Jeff Irlbeck, Jodie Getting University of Minnesota Southwest Research and Outreach Center Summary Foliar
More informationALFALFA: ALFALFA INSECT CONTROL
ALFALFA: ALFALFA INSECT CONTROL David Buntin, Research/Extension Entomologist At-Planting Pests Cutworms, grubs, Lorsban 15G Smartbox wireworms SEED TREATMENT: thiamethoxam Cruiser 5FS alfalfa 4A Alfalfa
More informationEntomology: A Perspective on Insecticide Efficacy Research
NAICC 2019 Annual Meeting and Ag Pro Expo January 15, 2019 Savannah, GA Entomology: A Perspective on Insecticide Efficacy Research Julien M. Beuzelin Everglades Research and Education Center Belle Glade,
More information2009 Elba Muck Soil Nutrient Survey Results Summary, Part III: Calcium, Magnesium and Micronutrients
29 Elba Muck Soil Nutrient Survey Results Summary, Part III: Calcium, Magnesium and Micronutrients Christy Hoepting, Cornell Cooperative Extension Vegetable Program Introduction This is the final part
More informationHopGuard II Section 18 Approved for Kansas
For Agribusinesses, Applicators, Consultants and Extension Personnel Department of Entomology 123 West Waters Hall K-State Research and Extension Manhattan, Kansas 66506 785-532-5891 http://www.entomology.ksu.edu/extension
More informationPlant Pathology Fact Sheet
Plant Pathology Fact Sheet PP-139 Cylindrocladium Black Rot (CBR) of Peanut, Soybean, and Forage Legumes in Florida Tom Kucharek, Professor and Extension Plant Pathologist, Plant Pathology Department,
More informationUpdate from Israel on the Polyphagous Shot Hole Borer and its Fusarium fungal symbiont
Update from Israel on the Polyphagous Shot Hole Borer and its Fusarium fungal symbiont Mary Lu Arpaia (Extension Specialist, UC Riverside) and David Obenland (Plant Physiologist, USDA ARS) We recently
More information2008 PMR REPORT #ESOYSMI4 SECTION E: CEREAL, FORAGE CROPS, and OILSEEDS Insect Pests
2008 PMR REPORT #ESOYSMI4 SECTION E: CEREAL, FORAGE CROPS, and OILSEEDS Insect Pests CROP: Soybean, Glycine max (L.) Merr., Hyland Seed cvs. HS24R45 (3200 CHU) ( st planting) and RR Razor (2 nd planting)
More informationCotton Insect Control in Arizona
Cotton Insect Control in Arizona Item Type Article Authors Watson, T. F.; Moore, Leon Publisher College of Agriculture, University of Arizona (Tucson, AZ) Journal Progressive Agriculture in Arizona Rights
More informationInstitute of Ag Professionals
Institute of Ag Professionals Proceedings of the 2015 Crop Pest Management Shortcourse & Minnesota Crop Production Retailers Association Trade Show www.extension.umn.edu/ag-professionals Do not reproduce
More informationTree and Shrub Disease
n t h r a A n t h r a c n o s e A number of different trees are affected by anthracnose disease. This fungal disease can cause severe leaf blighting and deformation, but in many cases the damage to the
More informationProject Title: Evaluating the Distribution and Potential Impacts of Soybean Vein Necrosis Virus in Delaware
Delaware Soybean Board Report for Kleczewski, 2014 Project Title: Evaluating the Distribution and Potential Impacts of Soybean Vein Necrosis Virus in Delaware Background and Objectives: Soybeans are susceptible
More information2011 Lygus Bug Management Trial in Blackeyes Kearney Research and Extension Center, Parlier, CA C.A. Frate 1, S.C. Mueller and P.B.
2011 Bug Management Trial in Blackeyes Kearney Research and Extension Center, Parlier, CA C.A. Frate 1, S.C. Mueller and P.B. Goodell Introduction bugs are the primary insect pest of blackeye cowpeas (Vigna
More informationSeed Treatment Products
Bayer CropScience Seed Treatment Products Bayer Soybean Seed Treatment t Offer Bayer Treatment offer: Trilex/Allegiance Concentrate All separate components Trilex AL RTU High use rate and will be moving
More informationOhio Vegetable & Small Fruit Research & Development Program 2007 Report on Research
Ohio Vegetable & Small Fruit Research & Development Program 2007 Report on Research Project Title: New Corn Earworm Management for Fresh Market Sweet Corn Principal Investigator(s): Jim Jasinski, Celeste
More informationInsects and Insecticides in Utah Turf
Insects and Insecticides in Utah Turf Ricardo Ramirez Entomologist Utah Plant Pest Diagnostic Lab Major Turf Pests Surface /Thatch Feeders (Leaf, stem): Armyworms Cutworms Sod Webworms Mites Subsurface
More informationField Guide to Maize Diseases in Hawaii Seed Corn Nurseries. By David Case
Field Guide to Maize Diseases in Hawaii Seed Corn Nurseries By David Case Sections My Background Why a module? Value of the module About the module Summary Conclusion My background Hometown: Bradleyville,
More informationAmbrosia Beetle Decline of Apricot and Plum in Michigan. Bill Shane
Ambrosia Beetle Decline of Apricot and Plum in Michigan Bill Shane SW Michigan Research and Extension Center Benton Harbor, MI Michigan State University shane@msu.edu Purpose of Talk Share my experiences
More informationManagement of Fusarium and other Soil Borne Diseases in Tomatoes and Vegetables
Management of Fusarium and other Soil Borne Diseases in Tomatoes and Vegetables Scott Stoddard, Farm Advisor, UCCE Merced County Pest Management Update Class, Nov. 3, 2015 Soil diseases Phytophthora Pythium
More informationDeveloping a First Detector Network for Utah. Cooperative A g Pest Sur vey Coordinator
Developing a First Detector Network for Utah Lori Spears Cooperative A g Pest Sur vey Coordinator Utah State Univer sity Utah s First Detector Program is a response to the need to address the growing threat
More informationControl of Occasional Insect Pests in Organic Blueberries. Oscar E. Liburd. Entomology and Nematology Department University of Florida
Control of Occasional Insect Pests in Organic Blueberries Oscar E. Liburd Entomology and Nematology Department University of Florida Blueberry insect pests Blueberry maggot Blueberry gall midge Blueberry
More informationUniversity of California Cooperative Extension Tulare County. Grape Notes. Volume II, Issue 5 October 05
University of California Cooperative Extension Tulare County Grape Notes Volume II, Issue 5 October 05 Mild Magnesium Deficiency Widespread This Year Mild symptoms of magnesium (Mg) deficiency are common
More informationScouting Horseradish for IPM
Instructions for Scouting Scouting Horseradish for IPM Always: To prevent the transport of Verticillium or other organisms from field to field, wear disposable plastic boot covers and change them before
More informationINSECTICIDE RECOMMENDATIONS FOR POPCORN ENT -62 Prepared by Ric Bessin and Douglas W. Johnson, Extension Entomologists.
INSECTICIDE RECOMMENDATIONS FOR POPCORN - 2007 ENT -62 Prepared by Ric Bessin and Douglas W. Johnson, Extension Entomologists This publication was prepared as a guide for use in the selection of agricultural
More informationFALL GRADE. Edible SCHOOL GARDEN. Program WORKBOOK STUDENT: VERSION: AUGUST 2016 JHU CAIH
4 FALL GRADE Edible SCHOOL GARDEN Program WORKBOOK STUDENT: VERSION: AUGUST 2016 JHU CAIH The Champion Cheer! We drink WATER cause it s fun, feels good, and makes us strong! We enjoy FRUITS AND VEGGIES
More informationImproving Management Of Soybean Cyst Nematode Through Extension Demonstration And Outreach
Improving Management Of Soybean Cyst Nematode Through Extension Demonstration And Outreach Purpose: Soybean cyst nematode (SCN) is the most yield limiting disease of soybean in Ontario and the northern
More informationChinch Bug, True Armyworm
Insects Impacting Drill Seeded Rice and General Three Leaf Panicle Seedling Vegetative Panicle Emergence Grain Maturity Emergence Growth Tillering Initiation (Heading) Development (Harvest) Grape Colaspis
More informationPink Bollworm. Description
B-1511 Pink Bollworm Pink bollworm was first discovered in the U.S. at Hearne, Texas, in 1917. Since that time it has spread westward, causing millions of dollars in damage and control costs each year.
More informationDistribution and Incidence of Sugar Beet Diseases in the Wind River and Big Horn River Basins of Northwest Wyoming
Distribution and Incidence of Sugar Beet Diseases in the Wind River and Big Horn River Basins of Northwest Wyoming Prepared by Fred A. Gray, Ph.D Professor of Plant Pathology Department of Plant Sciences
More informationNEW YORK'S FOOD AND LIFE SCIENCES BULLETIN NO. 57, AUGUST 1975
NEW YORK'S FOOD AND LIFE SCIENCES BULLETIN NO. 57, AUGUST 1975 NEW YORK STATE AGRICULTURAL EXPERIMENT STATION. GENEVA, A DIVISION OF THE NEW YORK STATE COLLEGE OF AGRICULTURE AND LIFE SCIENCES, A STATUTORY
More informationSOIL PH IN RELATION TO BROWN STEM ROT AND SOYBEAN CYST NEMATODE N.C. Kurtzweil 1, C.R. Grau 2, A.E. MacGuidwin 3, J.M. Gaska 4, and A.W.
SOIL PH IN RELATION TO BROWN STEM ROT AND SOYBEAN CYST NEMATODE N.C. Kurtzweil 1, C.R. Grau 2, A.E. MacGuidwin 3, J.M. Gaska 4, and A.W. Kazubowski 5 The soybean cyst nematode (SCN; Heterodera glycines)
More informationInsect Pests of Canola DALE WHALEY WSU REGIONAL EXTENSION SPECIALIST WATERVILLE, WA
Insect Pests of Canola DALE WHALEY WSU REGIONAL EXTENSION SPECIALIST WATERVILLE, WA What We Want! Insect Pests of Canola Several Others How do you know when to treat the field? Calendar Approach IPM 101
More informationYour Money or Your Life An Exploration of the Implications of Genetic Testing in the Workplace
Activity Instructions This Role Play Activity is designed to promote discussion and critical thinking about the issues of genetic testing and pesticide exposure. While much of the information included
More informationPurdue University Department of Entomology Undergraduate Capstone Project Summary
Purdue University Department of Entomology Undergraduate Capstone Project Summary Name of Student: Nicholas Seiter Name of Mentor: Dr. Christian Krupke Name of Academic Advisor: Dr. Allen York Project
More informationEvaluation of Assail for the Control of Early Season Cotton Aphids in Upland Cotton COOPERATIVE RESEARCH PROJECT 2001
of Early Season Cotton Aphids in Upland Cotton COOPERATIVE RESEARCH PROJECT 2001 Donald J. Reid, Agronomist Texas A & M University-Commerce James S. Swart, Entomologist Texas Agricultural Extension Service
More information