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1 Institute of Ag Professionals Proceedings of the 2015 Crop Pest Management Shortcourse & Minnesota Crop Production Retailers Association Trade Show Do not reproduce or redistribute without the written consent of author(s).
2 Soybean Cyst Nematode Management Mineapolis, Minnesota December 10, 2015 George W. Bird Professor of Nematology Michigan State University East Lansing, Michigan 48824
3 Soybean Damage Caused by SCN Tylka
4 SCN History and Current Distribution U.S.A N. Carolina 2015 # states Yield Loss 3,368,000 metric tons) #1 limiting factor Global
5 Michigan SCN Distribution SCN Infested No SCN Detected Historic Sites Survey 558 Farms 46 Counties 53% Infestation
6 SCN Biology Cyst Style Egg
7 SCN Feeding Tube and Nurse Cells
8 SCN Symptoms and Signs
9 Soybean Damage Caused by SCN Tylka
10 SCN Problem Detection and Diagnosis Uneven growth patterns with stunted plants. Yellow foliage. White SCN females on roots. Low number of bean pods. Low number of beans per pod. Low bean yield (<10 vs > 70 bushels per acre). Sometimes no visible above ground symptoms.
11 SCN Problem Detection and Diagnosis Uneven growth patterns with stunted plants. Yellow foliage. White SCN females on roots. Low number of bean pods. Low number of beans per pod. Low bean yield (<10 vs > 70 bushels per acre). SCN laboratory analysis of soil and root tissue. analysis
12 SCN Problem Confirmation SCN Laboratory Soil Analysis. Number of cysts recovered per unit o soil. Number of SCN eggs recovered per unit of soil. Number of SCN eggs per cyst. Local Damage Threshold Information. Management Recommendation. Analysis. Aggressive population classification.
13 SCN Management SCN Exclusion (common sense) SCN Containment (more common sense) SCN Control Crop Rotation Chemical Host-Plant Resistance Seed Treatment Do Nothing
14 What are SCN Resistant Varieties? High yielding varieties derived from: PI (a.k.a. Peking) PI PI (a.k.a. Hartwig, CystX )
15 How Does This Work? Resistance Source Mechanism Susceptible None PI First commercial source PI Second commercial source PI Fourth commercial source Vertical (single major gene) Horizontal (multiple minor genes) Horizontal and Vertical (both)
16 Can these varieties fail? Yes! Resistance Source Mechanism s PI st source Vertical 1 (aggressive) PI nd source Horizontal 2 (aggressive) PI th source Horizontal and Vertical 4 (aggressive)
17 SCN Seed Treatments Chemical Avicta Biological VOTiVO (Bacillus firmus) Bird Clariva (Pasteuria nishizawae Plant Health Regulator N-Hibit Abawi Resistant Varieties Only!
18 2015 SCN Research Results Variety/Treatment Bean Yield (bu/a) SCN (eggs/100 cc soil) Susceptible ,840 PI Variety PI Variety PI Future Seed Treatment
19 Why am I confused? Races None available None available 2.4 None available None available
20 Managing SCN with Resistant Varieties Resistance Mechanism Source Susceptible None PI Vertical PI Horizontal PI Horizontal and Vertical
21 Managing SCN with Resistant Varieties Resistance Mechanism Source Susceptible None DO NOT PI Vertical PI Horizontal PI Horizontal and Vertical
22 Managing SCN with Resistant Varieties Resistance Mechanism Source Susceptible None DO NOT DO NOT PI Vertical PI Horizontal DO NOT PI Horizontal and Vertical
23 Managing SCN with Resistant Varieties Resistance Mechanism Source Susceptible None DO NOT DO NOT DO NOT PI Vertical DO NOT PI Horizontal DO NOT PI Horizontal and Vertical
24 Managing SCN with Resistant Varieties Resistance Mechanism Source Susceptible None DO NOT DO NOT DO NOT DO NOT PI Vertical DO NOT PI Horizontal DO NOT PI Horizontal DO NOT and Vertical
25 2015 SCN Research Results Variety/Treatment Bean Yield (bu/a) SCN (eggs/100 cc soil) Susceptible ,840 PI Variety PI Variety PI Seed Treatment
26 Summary SCN Biology SCN Problem Detection Identification SCN Laboratory SCN Problem Confirmation Assessment Management Crop Rotation (Avoidance) Resistant Varieties Seed Treatments Healthy Soil
27 Thanks for Listening Professor Bird (George )
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Two decades of berry moth research: what have we learned?
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Fusarium wilt of strawberry. Tom Gordon
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Peanut Pest Management (outside of disease)
Peanut Pest Management (outside of disease) David Jordan, Crop and Soil Sciences Rick Brandenburg, Entomology and Plant Pathology Barbara Shew, Entomology and Plant Pathology Information and Updates Peanut
1. INTRODUCTION. oldest commercial crops, plays a key role in the economic and social affairs of the world
1. INTRODUCTION Cotton (Gossypium spp.) regarded as white gold is one of the important and oldest commercial crops, plays a key role in the economic and social affairs of the world (Shah et al., 2011;