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Soybean production update

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A brief review of selected NDSU soybean production management trials conducted in 2013.

A brief review of selected NDSU soybean production management trials conducted in 2013.

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  • {"23":"Less broadcast P available due to reduced rainfall and dry topsoil during season?\n","25":"Yield response 17% of trials.\n","15":"CREC Plant stand: early = 130K; midMay = 151K\n"}

Transcript

  • 1. 2013 Soybean Production Update Greg Endres, Extension area agronomist NDSU Carrington Research Extension Center gregory.endres@ndsu.edu 701-652-2951
  • 2. •South-central ND season review •Plant establishment •Timing of weed control
  • 3. inches May-Sep monthly rainfall, Southcentral ND, 2013
  • 4. Soybean Establishment Study, CREC, 201113 • 2 tillage systems – conventional and direct seed (‘no-till’) • 2 planting dates – multiple trials • 4 (planting time) fertilizer treatments – 6-24-6 applied on low-med P (7-9 ppm) and high-VH K (141-216 ppm) soil – untreated check, broadcast, 2-inch band • POST fungicide (2 of 4 reps) Funded by ND Soybean Council
  • 5. May 30 July 22 conventional direct seed
  • 6. Soybean Establishment Study, Carrington, 201113: SEED YIELD WITH TILLAGE SYSTEMS 60 52.5 51.8 50 40 40.8 * 45.9 45.3 45.2 43.4 * 40.8 conventional 30 direct seed 20 10 0 2011 2012 2013 3-yr ave Averaged across planting dates and fertilizer treatments
  • 7. Soybean Establishment Studies, CREC, 2011-12: SEED YIELD WITH PLANTING DATES 60 50 40 53.7 43.5 * * 50.6 40.7 37.6 * 30 30.3 27.9 early 19.5 20 10 0 Carrington 2011 May 5/19 Carrington 2012 Apr 30/May 15 New Rockford Wishek 2012 2012 May 2/17 Apr 24/May 16 normal
  • 8. Soybean Establishment Study, CREC, 2013: Planting dates May 29 June 12
  • 9. Soybean Establishment Study, CREC, 2013: Planting dates – impact on plant development and agronomic factors Dates for plant development Planting dates Emergence Flower Maturity (R8) May 29 163 196 273 June 12 171 202 280 8 6 7 Plants/A Pod height Test weight Planting dates June 28 cm lb/bu May 29 134,740 2 53.7 June 12 129,430 4 52.1 Difference in days
  • 10. Soybean Establishment Study, CREC, 2013: SEED YIELD WITH PLANTING DATES 50 43.1 42.9 40 30 29-May 12-Jun 20 10 0 Carrington Averaged across tillage systems and fertilizer treatments
  • 11. Planting date x maturity group, Prosper, 2013 Planting dates: May 13 and 28 Maturity groups: 0.1 and 0.7 (DSR 0101 and 0747)
  • 12. Planting date x maturity group, Prosper, 2013 Planting date Stand Yield plants/A bu/A Planting date May 13 146,560 45.8 May 13 May 28 165,620 40.4 Yield 0.1 46.0 0.7 May 28 Maturity group 45.7 0.1 38.2 0.7 42.5 bu/A
  • 13. Planting date x maturity group, Wishek, 2013 Planting dates: May 24 June 6
  • 14. Planting date (4) x variety (2), CREC, 2013 Burton Johnson
  • 15. Soybean Establishment Study, CREC, 201113: SEED YIELD WITH PLANTING-TIME FERTILIZER 60 50 43.7 42.3 43.0 45.3 46.0 45.8 40 check 30 broadcast 2" band 20 10 0 2013 2011-13 P = low-med and K = high-VH. 6-24-6 applied as band at planting or broadcast PRE (not mechanically incorporated). Averaged across planting dates and tillage systems.
  • 16. Soybean establishment study, CREC, 2013: 50 SEED YIELD WITH FUNGICIDE 1 44.5 30 20 unt reat ed check Priax or 10 1 0 bu/ A 40 41.5 4 fl oz/A at R3-4 stages
  • 17. NDSU Soybean Foliar Fungicide Trials, 2004-13 (29 trials): 50 SEED YIELD 1 43.7 30 20 unt reat ed check fungicide 0 10 bu/ A 40 41.9 Headline or Priaxor applied primarily at R1-3 stages (V2-R4). Yield statistically significant (LSD 0.05) in 5 of 29 trials. 1 Source: Markell et al.
  • 18. Soybean yield loss from weeds Timing of initial weed control Weed height Soybean stage At planting (soil application) VC-V2 (unifoliate to 1st 2 to 4 inches trifoliate) V2-V4 (2nd to 4th 6 to 8 inches trifoliate) V4-R2 (4th trifoliate to > 10 inches full flower) Untreated check NDSU: 4 site-years (2011-12). Soybean yield bu/A 48.0 46.9 45.2 37.7 19.3
  • 19. Soybean timing of initial weed control, Carrington, 2013 early POST – June 21
  • 20. July 11 – late POST
  • 21. Soybean yield with timing of initial weed control, Carrington, 2013. 35 32.8 29.8 30 Bu/A 25 LSD (0.05): NS 27.4 22.9 22.7 20 check at planting 15 ePOST 10 lPOST mPOST 5 0 Carrington
  • 22. Soybean timing of initial weed control, NCREC (Minot), 2013 Sep 12
  • 23. NDSU Research Summary of Soybean Plant Establishment Factors Factor ^Tillage system Previous crop A B (Oct 2013) reduced till Yield > (%) 7 conventional till NDSU trial site-years 19* wheat 7 soybean 6 no 6 Seed inoculation with soybean history Seed fungicide yes yes 10 no 19 ^Planting date < early May 13 mid May 4 150-175,000 14-21 5 5 100-130,000 28-30 20 19 broadcast 0 5* at planting 5 band (away from seed) early POST Planting rate (pls/A) Row spacing (inch) ^P at planting time ^Timing of Weed Removal 0 5* *Data from trials conducted during 1999-2013
  • 24. Questions?