Rotational No-Till

Growing organically with continuous no-till is challenging; however, rotational no-till is a way to limit tillage while utilizing cover crops as a grow-in-place mulch while still farming organically. At the Sustainable Cropping Systems Lab, we work on organic rotational no-till in soybeans.

Organic No-Till Soybeans
In most soybean production systems weed management is either through herbicides if conventional, or cultivation if organic. The goal of this project was to test a method of growing soybeans that uses neither tillage nor herbicides for weed management: a rotational no-till cover crop based system. Soybeans were planted into a roller-crimped rye or barley cover crop. This system uses 27% less diesel fuel and 31% less labor than tillage-based systems.

We planted rye, barley, and mixtures of barley and rye at three different ratios in 2012-2014 at our Musgrave research farm. We measured the amount of light penetrating the cover crops while they were growing to see if mixtures of barley and rye provided greater shading, and therefore greater weed suppression, than either species alone. We quantified cover crop biomass production in the spring and then rolled the cover crops into mulch with a roller-crimper. For weed management after soybean planting, the cover crops were cultivated in three different ways: high-residue cultivation, chisel plow (standard plow practice), and no-till (no cultivation at all).

The below presentations, videos, and posters summarize our findings.

Watch Matthew Ryan’s presentation about cover crop seeding at the 2016 Northeast SARE Cover Crops for Soil Health workshop.

View Jeff Liebert’s Northeast Organic Farmer’s Association 2016 winter conference presentation about organic reduced tillage soybeans.

 

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Learn about soybean planting rates and profitability in organic no-till from a different study we conducted in PA and MD

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See how organic soybeans performed growing in cover crops
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Watch Jeff Liebert’s Soil and Crop Sciences Departmental Seminar about roller crimping barley and rye for soybean production

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