​​Manure and Cover Crop Management Practices on Dryland No-Till Cotton System in Mississippi

November 2019 | 22 min., 47 sec.
by Ardeshir Adeli
USDA-ARS

Summary

​Cotton is grown largely on alluvial floodplain soils in the Mississippi Delta region, but a significant amount of cotton is also grown under no-till systems on upland soils that are marginal in organic matter and vulnerable to erosion. In the subhumid southeastern United States, the rapid decomposition of initially low levels of cotton residue limits the benefits of no-till systems for improving soil health. Repeated broiler litter applications to no-till cotton with insufficient cotton residue exposes litter and its nutrients to risks of loss, reduces its effectiveness as a nutrient source, and may eventually lead to yield reduction. Integration of a cover crop with broiler litter into no-till dryland cotton increases plant residues on the soil surface and has the potential to maintain broiler litter-derived nutrients in place, enhance C sequestration, increase infiltration and water storage, improve soil health indicators, and increase cotton yield. This presentation provides a basis for farmers and producers to adopt cover crop management practices for maintaining fertilizer value of broiler litter and to reduce the use of purchased inorganic fertilizers, enabling them to maximize their net return while protecting the environment. In addition, the presentation provides a well-established guideline for broiler producers and greatly helps the NRCS, agricultural consultants, and others in developing plans for nutrient management.

About the Presenter

Ardeshir AdeliArdeshir Adeli is a research soil scientist at the USDA-ARS, Genetics and Precision Agriculture Research Unit, at Mississippi State University (MSU). He holds a PhD in soil fertility and plant nutrition from MSU, an MS in soil fertility from MSU, and a BS in plant ​breeding from Tehran University in Iran. Dr. Adeli has been a research soil scientist at MSU since 2003; previous positions have included visiting research scientists and research associate at the university. His primary research interests are soil health and environmental quality; soil, crop, and nutrient management effect on greenhouse gas emissions; manure and cover crop management on soil health and cash crop production; cropping system and soil management practices for sustainable agriculture; and quantification of nitrogen, phosphorus, and heavy metal dynamics in soil, plant, and water systems as a result of both short-term and long-term land applications. Dr. Adeli has received the USDA-ARS Performance Award, Exceeding Expectations of Performance, every year since 2009. He is an active author, editor, and speaker.​

Contact Information:
Email: ardeshir.adeli@usda.gov

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