CONSERVATION SYSTEMS RESEARCH FOR IMPROVING ENVIRONMENTAL QUALITY AND PRODUCER PROFITABILITY
Location: National Soil Dynamics Laboratory
Title: Reduction of soil compaction in a cotton and peanut rotation using conservation systems
Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: November 4, 2007
Publication Date: November 4, 2007
Citation: Simoes, P., Raper, R.L., Balkcom, K.S., Arriaga, F.J., Shaw, J. 2010. Reduction of soil compaction in a cotton and peanut rotation using conservation systems [abstract]. ASA-CSSA-SSSA Annual Meeting, New Orleans, Nov. 4-8, 2007. CDROM.
Southern Coastal Plain soils benefit from the adoption of conservation tillage systems as water retention and organic matter increase which improves soil structure. However, some coastal plain soils are prone to compaction and tend to form hardpans which restrict root growth and reduce yields. The adoption of non-inversion deep tillage has been recommended to disrupt compacted soil layers and create an adequate medium for crop development. In spite of its efficacy, increased fuel prices have many producers questioning in-row subsoiling as too expensive. This has led to research on development of subsoiler shanks that minimally disrupt soil surface and require reduced horsepower. Three subsoiling implements were evaluated against a no subsoiled treatment with and without a rye cover crop at the Wiregrass Research Station in Headland, AL on a Dothan loamy sand soil. Plant, soil and machinery parameters were evaluated: crop yield; cover crop biomass; cotton leaf temperature; soil moisture; bulk density; soil carbon; hydraulic conductivity; cone index; and tillage energy. Results showed consistently lower yields for no-till treatments, while cover crops showed improvements in two of four years. No differences between implements were found.