Studies about cover crops from many of the semi-arid Great Plains have been cautionary or conditional, owing to potential concerns about soil moisture or nutrient use from covers seeded ahead of cash crops.
One expected benefit of using legumes as a cover crop is to provide a source of nitrogen (N) to the cropping system, but in certain situations the amount of fixed N may be lower than anticipated, says University of Nebraska Extension.
A study found that legume covers actually supplied little total nitrogen due to low biomass production, while the nitrogen contained in cereal rye residue was likely readily available for the next corn crop.
Manured fields are good candidates for the pre-sidedress soil nitrate test, but nitrogen credit following legume crops is unpredictable and will likely depend on the stand density and timely termination.
With this year's above average no-till corn height and ear placements 6 feet or higher on the plant, do we still want to pick the corn leaving an average stubble height or should stubble height be higher?
Understanding that the need for no-till knowledge is year-round and seeing the opportunity to bridge the unique learning experiences of the annual National No-Tillage Conference in-person event, No-Till Farmer is proud to launch a brand new 2-day online educational event.
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