Irrigation Management In Rice. Matthew Rhine University of Missouri

Transcription

1 Irrigation Management In Rice Matthew Rhine University of Missouri

2 Current Research Rice DD50 V x N validation Clearfield variety trial CL 172 seeding rate validation Amendments to reduce rice chalkiness Micronutrient packages for rice Irrigation management smartphone app Furrow N and rooting depth evaluation

3 MO DD-50 Program Accumulation of heat units from emergence Crop model uses DD50 to predict crop growth and make recommendations Uses real-time weather stations

4 Missouri Weather Stations Located throughout the state Provide real time and historical weather data Integrate weather data into these crop modeling programs

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7 DD50 V x N Validation Evaluating current and experimental rice cultivars and hybrids Growth stage timings for DD50 validation Nitrogen Validation 75%, 100%, and 150% of recommended N (120, 150, 180 lb N)

8 DD50 Variety Evaluation

9 DD50 Nitrogen Response V x N α =

10 Clearfield Variety Trial Funded by Horizon Ag Evaluation of Clearfield lines and experimentals CL 111 CL 151 CL 152 CL 172 CL 271 CLX 1024 CL 163

11 Clearfield VT Glennonville, MO

12 CL 172 Seeding Rate Study Evaluation of seeding rate on yield of CL , 40, 60, 80, 100, 120 lb seed per acre

13 Amendments to Reduce Chalk Factors shown to increase chalkiness N and K Deficiencies Plant hormones High nighttime temps Water Stress Crop genetics Two varieties per location CL 151 CL 111 Four amendments Soil K Soil Calcium Silicate Foliar Gibberellic Acid Foliar Kinetin Determining locations on panicle where chalkiness is most prevalent

14 Chalk Yields at Hayward, MO

15 Rice grain transparency CL 151 Grain Transparency None KPP CASIPP KIE GA KIN Grain transparency was significantly reduced on both lines with applications of GA or K PP

16 Rice grain transparency factor Panicle Location CL151 CL Bottom Middle Top Panicle tops had significantly higher transparency, also mature earlier

17 Micronutrient Packages for Rice Evaluation of 14 micronutrient solutions Both broad and narrow spectrum V4 Application Jupiter

18 Micronutrient Packages for Rice Highest yielding treatments compared to check: Zinc 9 9% EDTA Zn BorPak 5% B Max-In Ultra ZMB 3% S, 0.1% B, 3% Mn, 4% Zn Wuxal Top 3 4% N, 1.1% S, 0.25% B, 2% Mn, 2% Zn These have consistently been the top yielding amendments for two seasons.

19 Irrigation Management Smartphone App for Mobile Management of Irrigation Pivot and Furrow Irrigated Rice Fine tuning water use curves Inputs Field GPS Location Soil Type Crop and Rooting Depth Irrigations Outputs Recorded rainfall Irrigation scheduling Accumulated heat units

20 Crop Water Use App Field Status Field Summary

21 Rice Furrow CWU Validation Variety Roy J Rooting depth input 6 Irrigate more often Irrigate less often Nitrogen Validation 0 lb N

22 Rice Furrow Nitrogen

23 Rice Furrow Irrigation

24 Furrow Rice CWU Report Jun OK 2-Jun OK 2-Jun OK 3-Jun OK 3-Jun OK 3-Jun OK 4-Jun OK 4-Jun OK 4-Jun OK 5-Jun OK 5-Jun OK 5-Jun OK 6-Jun OK 6-Jun OK 6-Jun OK 7-Jun * 7-Jun OK 7-Jun OK 8-Jun XXX 8-Jun OK 8-Jun OK 9-Jun XXX 9-Jun OK 9-Jun OK 10-Jun XXX 10-Jun ** 10-Jun OK 11-Jun XXX 11-Jun XXX 11-Jun * 12-Jun XXX 12-Jun XXX 12-Jun ** 13-Jun OK 13-Jun OK 13-Jun OK 14-Jun OK 14-Jun OK 14-Jun OK 15-Jun ** 15-Jun OK 15-Jun OK 16-Jun XXX 16-Jun OK 16-Jun OK 17-Jun XXX 17-Jun *** 17-Jun OK 18-Jun XXX 18-Jun XXX 18-Jun * 19-Jun OK 19-Jun XXX 19-Jun *** 20-Jun OK 20-Jun OK 20-Jun XXX 21-Jun *** 21-Jun OK 21-Jun OK 22-Jun XXX 22-Jun OK 22-Jun OK 23-Jun XXX 23-Jun ** 23-Jun OK 24-Jun XXX 24-Jun ** 24-Jun OK 25-Jun OK 25-Jun XXX 25-Jun OK 26-Jun OK 26-Jun XXX 26-Jun * 27-Jun * 27-Jun OK 27-Jun ** 28-Jun OK 28-Jun OK 28-Jun OK 29-Jun OK 29-Jun OK 29-Jun OK 30-Jun OK 30-Jun OK 30-Jun OK 1-Jul OK 1-Jul OK 1-Jul OK 2-Jul *** 2-Jul OK 2-Jul OK

25 Summary RT XL753 led VT yields New Hybrid Gemini 214CL also did well Highest yielding conventional was Lakast Mermentau and Roy J were slightly behind Experimental CLX 1024 did best on loam, fell short on heavy clay CL 151 had lodging issues on the loam soil Highest yielding CL line on the clay CL 172 yield was unaffected by seeding rate

26 Summary Yields were increased on clay with hormone applications at heading, and preplant applications of K or CaSi Grain transparency was decreased following applications that delayed maturity Gibberellic Acid and K Grain transparency is also affected by location on the panicle Those that mature earlier have less chalkiness

27 Summary Micronutrient packages with S, Mn, B, or Zn improved yields over untreated checks MU s Crop Water Use app can be utilized in your furrow or pivot irrigated rice Provides daily irrigation scheduling 2016 Yields were not significantly affected by rooting depth input (Mainly due to user error) Nitrogen applications for furrow rice follow closely with flood irrigated rice Time-release or spoon feeding nitrogen also shows promise

28 Questions?