1 / 27

Crop Rotations – Is Winter Wheat the " Dark Horse"?

Crop Rotations – Is Winter Wheat the " Dark Horse"?. Dave Hooker, PhD Bill Deen , PhD Dept of Plant Agriculture/Ridgetown Campus University of Guelph. @cropdoc2. Email: dhooker@uoguelph.ca , Twitter: @cropdoc2. Outline. Overview of long term trials – Elora , Ridgetown

yan
Télécharger la présentation

Crop Rotations – Is Winter Wheat the " Dark Horse"?

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. Crop Rotations – Is Winter Wheat the "Dark Horse"? Dave Hooker, PhD Bill Deen, PhD Dept of Plant Agriculture/Ridgetown Campus University of Guelph @cropdoc2 Email: dhooker@uoguelph.ca, Twitter: @cropdoc2

  2. Outline • Overview of long term trials – Elora, Ridgetown • Breakdown of winter wheat contributions in the rotation • Question…..Is winter wheat the dark horse? “A dark horse is a little-known person or thing that emerges to prominence, especially in a competition of some sort or a contestant that seems unlikely to succeed.” • Rotation Budget

  3. Acknowledgments + Technical Staff, graduate students, summer students

  4. EloraLong-term rotation 2011 CT NT • Initiated in 1980 • Rotations – CCCC, AAAA, CCAA, CCSS, CCSW, CCSW(rc), CCOB, CCO(rc)B(rc) • Conventional tillage and no-till Corn Soybean Alfalfa Barley Wheat

  5. Ridgetown Long-Term Tillage-Rotation • Established 1995 (by Doug Young) • 5 Crop Rotations • C-C • S-S • C-S • C-S-W • S-W • 4 N treatments in corn and wheat • Red clover underseeded in wheat plots • Technical: Mr. Scott Jay

  6. Corn Yields at Elora 2012

  7. Soybean Yields at Ridgetown 2012 Seed Yield (bu/ac) NT NT MP MP NT MP S-S C-S C-S-W Rotation

  8. Corn Yields at Ridgetown in 2012 Grain Yield (bu/ac) NT NT MP MP NT MP C-C C-S C-S-W Rotation

  9. Messages: Elora and Ridgetown Trials • Complex rotations  higher yield, better soil properties at Elora and Ridgetown • Benefits of red clover in rotation • Benefits of wheat in rotation • Demonstrated soybean a negative on soil properties and yield • Demo lower optimal N rates at Ridgetown (not assessed at Elora) • MB > NT at Elora; MB > or = No-till at Ridgetown • Rotation and tillage interact, especially at Elora (i.e., complex rotations are less responsive to tillage) • Rotation >> tillage on soil carbon/soil properties • Rotation influences sustainable residue removal rates

  10. Wheat is the opportunity to improve complexity of corn-soybean-dominated rotations • Is wheat a weak sister in a corn-soy-wheat rotation? • But is wheat the dark horse?

  11. Wheat: direct contribution to returns1. The “Rotation Effect”

  12. 1. The “Rotation Effect” Wheat on Corn Yields Ridgetown 2009-12 2012 2010 2011 2009 Grain Yield (bu/ac) C-S-W C-S-W C-S-W C-S-W C-C C-C C-C C-S C-S C-S C-C C-S Note: Mean separation within year (p=0.05)

  13. 1. The “Rotation Effect” Wheat on Soybean Yields Ridgetown 2009-12 2012 2011 2010 2009 Seed Yield (bu/ac) C-S-W C-S-W C-S-W C-S-W S-S S-S S-S C-S S-S C-S C-S C-S Rotation Averaged Across Tillage and Corn N treatments at Ridgetown. Est. 1991; letters within year statistically different at p=0.05 Source: Hooker et al., 2011 (UofG Ridgetown) Note: Mean separation within year (p=0.05)

  14. 1. The “Rotation Effect” Wheat on First Year Corn Yields Elora 2000-2011

  15. 1. The “Rotation Effect” Wheat on Soybean Yields Elora 1980-2011

  16. Wheat: direct contribution to returns2. Corn N Requirements

  17. Conventional-Till Corn Response to N and Rotation Ridgetown Long-term Tillage-Rotation 2009-2012 C-S-W(rc) C-S-W Grain Yield (bu ac-1) C-C C-S Fertilizer N Rate

  18. Tillage x Rotation Impacts MERN Ridgetown 2010-2012

  19. Wheat: direct contribution to returns3. Value of Straw as a Commodity

  20. Wheat: direct contribution to returns4. Opportunity for Red Clover

  21. Corn Yields after Wheat +/- Red Clover, Ridgetown 2010-12 2012 Ave 2010 2011 Grain Yield (bu/ac) C-S-W(rc) C-S-W(rc) C-S-W(rc) C-S-W(rc) C-S-W C-S-W C-S-W C-S-W

  22. Soybean Yields with Wheat +/- Red Clover, Ridgetown 2010-12 Seed Yield (bu/ac) C-S-W(rc) C-S-W(rc) C-S-W C-S-W S-S S-S C-S C-S Conventional Till No-Till Note: Mean separation within tillage system (p=0.05)

  23. Wheat: direct contribution to returns5. Double Cropping Opportunities

  24. Double Crop Soybean Yield Survey 2012 (bu/ac) FAIL FAIL FAIL 23 18 FAIL 23 25 32 FAIL 28 36 16 32 24 42 21 22 30 45 @cropdoc2

  25. Phenology DC soybean trial Ridgetown, 2012 Oct 3 R6 Oct 3 R6 Aug 14 R1 July 20 V1 Yield 20 bu @ $14/bu = $280/ac +/- Input costs = $175/ac +/-

  26. Cover Crops? OMAFRA, 2012

  27. Is Winter Wheat the "Dark Horse"?What is the REAL Value of Wheat?

More Related