No-till soybeans for organic farms. Preliminary studies. John Cardina Ohio Agricultural Research & ...
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No-till soybeans for organic farms.
Preliminary studies.John Cardina
Ohio Agricultural Research & Development Center (OARDC)
Wooster, OH
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OBJECTIVES: Develop methods for weed suppression and crop management in organic field crops with no tillage (or as little tillage as possible).
Treatments: Various cover crops and kill methods. Mustards did not establish this year. Rye was very successful.
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Rodale’s Cover Crop Roller
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METHODS:
Rye planted in October 2005. No side-dress fertilizer. Food-grade soybeans planted at 90 lb/acre with a no-till drill on June 1 2006 (rye heading). Three treatments for suppressing rye: 1. Roller 2. Mower (brush-hog) 3. Untreated (plant directly into standing rye).
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Roller in rye; soybeans planted immediately. June 1, 2006
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roller No pre-treatment
i.e. soybeans drilled into standing rye
mowing
September 1, 2006.
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Roller treatment, September 1.
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Weed Soybean
Weight Yield
oz/plot bu/A
Mow 2.7 42
Roll 2.5 39
No pre 1.0 41
Control 13.0 -
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Two theories for why this worked:
1. Dumb luck.
2. Rye suppressed spring weeds took N away from N-loving
weeds produced allelopathic chemicals. Soybeans formed quick canopy fixed their own N.There was ample soil moisture.
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In 2007: The Ultimate Test: Giant Ragweed!!
If you’re interested in trying this, I’d like to learn from your ideas and experience.
John Cardina 330-263-3644 [email protected].