1 / 40

Long-Term Yields

34 bu/A. Yield (bu/A). 21 bu/A. Year. Long-Term Yields. 0.56 bu/A/yr. Yield (bu/A). 0.27 bu/A/yr. Year. Yield Increases. Soybean Recommendations for 2002. Soybean Information Database. http://www.clemson.edu/edisto/soybean/soybean.htm. Topics. Variety Selection. Tillage.

libitha
Download Presentation

Long-Term Yields

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 34 bu/A Yield (bu/A) 21 bu/A Year Long-Term Yields

  2. 0.56 bu/A/yr Yield (bu/A) 0.27 bu/A/yr Year Yield Increases

  3. Soybean Recommendationsfor 2002

  4. Soybean Information Database http://www.clemson.edu/edisto/soybean/soybean.htm

  5. Topics Variety Selection Tillage Drilled vs. Wide Rows Nematode Management Weed Management

  6. Variety Selection

  7. Multiple Location Yield Data -2001 (Irrigated and Dryland Trials at Blackville & Irrigated Trial at Florence) Variety Yield (bu/acre) Variety Yield (bu/acre) * Yield differences larger than 4.9 bu/A are assumed to be real with 90% confidence.

  8. Florence, Dryland – 2001 (Peanut Root-knot) Variety Yield (bu/acre) Variety Yield (bu/acre) * Yield differences larger than 3.0 bu/A are assumed to be real with 90% confidence.

  9. Blackville, Irrigated – 2001 (Soybean Cyst R3 & 14) Variety Yield (bu/acre) Variety Yield (bu/acre) * Yield differences larger than 8.6 bu/A are assumed to be real with 90% confidence.

  10. Tillage

  11. No-Till = No Yield

  12. Subsoiled 14 inch depth 16 inches 8 inches No-Till

  13. Drilled vs. Wide Rows

  14. For double-cropped soybeans, a 10 to 15% yield increase from drilled rows can be expected. Drilled Wide Drilled Wide Drilled Wide 1 WAE 4 WAE 7 WAE

  15. Relationship Between Soybean Groundcover and Yield % Groundcover Hypothetical Yield (bushels/acre)

  16. Drill Seed Double-Cropped Soybeans!! (NK S73-Z5 - 2001) 42 32 Yield (bu/acre) 38-inch row 7.5-inch row

  17. Nematode Management

  18. Soybean Cyst R3 & R14 - 2001 41 35 24 20 Yield (bu/acre)

  19. Peanut Root-Knot - 2001 19 15 10 Yield (bu/acre) 6

  20. Weed Management

  21. 26 oz/acre Roundup UltraMax @ 28 DAE Don’t delay applying Roundup!

  22. 6 oz/A Canopy @ planting 26 oz/A Roundup UltraMax @ 28 DAE

  23. Single Roundup Application vs. Soil-Applied Herbicide fb Roundup26 oz/acre Roundup UltraMax, 38-inch rows 40 33 Yield (bu/acre) Rdp @ 28 DAE Canopy followed by Rdp @ 28 DAE

  24. Sequential Roundup Applications vs. Soil-Applied Program 26 oz/acre Roundup UltraMax, 38-inch rows 40 39 Yield (bu/acre) Python + Dual II Magnum followed by Rdp @ 28 DAE Rdp @ 14 DAE followed by Rdp @ 28 DAE

  25. Weed Removal Timing 49% 21% 17% 2.5 (Assumed 30 bushel yield potential) Roundup UltraMax + Application Costs = $14.00/acre = 2.5 bu/acre Yield Loss (bu/acre) Weeks after Soybean Emergence

  26. Weed Management in Drilled Roundup Ready Soybeans • Roundup at 2 to 3 WAE; Note:Tank-mix with 0.15 oz/A FirstRate or 0.33 oz/A Classic if morningglories are larger than 4 inches. • Repeat application 14 days later if needed

  27. Weed Management in Wide-Row Roundup Ready Soybeans - Option 1 • Soil-applied herbicide at planting • Roundup 5 to 6 WAE - Option 2 • Roundup 2 WAE • Roundup 14 to 21 days later

  28. Weed Management in Conventional Soybeans • Drilled (7.5-inch rows) • Soil-applied herbicide(s) at planting specific for weed spectrum • Postemergence herbicide(s) at 4 WAE if needed • Wide Rows (30- to 38-inch rows) • Same as above, except postemergence herbicide must be applied.

  29. Recommendations Choose a variety based on nematode resistance in addition to yield potential. Deep tillage is essential on Coastal Plains soils. Drill seed double-cropped soybeans.

  30. Recommendations Apply 5 lbs/acre Temik in conjunction with a nematode- resistant variety in nematode infested fields. Apply postemergence herbicides in a timely manner.

  31. Questions? Bountiful 2002 Harvest!

  32. Horry County Soybean Variety Demonstration - 2001 Variety Yield (bu/acre) Variety Yield (bu/acre) Conducted by Bruce Johnson

  33. Blackville, Dryland – 2001 (Columbia lance) Variety Yield (bu/acre) Variety Yield (bu/acre) * Yield differences larger than 9.2 bu/A are assumed to be real with 90% confidence.

  34. Blackville, Irrigated - 2001 Variety Yield (bu/acre) Variety Yield (bu/acre) * Yield differences larger than 10.1 bu/A are assumed to be real with 90% confidence.

  35. Florence, Irrigated – 2001 Variety Yield (bu/acre) Variety Yield (bu/acre) * Yield differences larger than 5.1 bu/A are assumed to be real with 90% confidence.

  36. Blackville, Dryland – 2001 Variety Yield (bu/acre) Variety Yield (bu/acre) * Yield differences larger than 9.2 bu/A are assumed to be real with 90% confidence.

  37. Richland/Lexington Conventional Soybean Variety Demonstration - 2001 Variety Yield (bu/acre) Conducted by John Oxner

More Related