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United States Department of Agriculture

Agricultural Research Service

Title: Effect of Tillage on Microbial Activity in Southeastern Coastal Plains Soils

Authors
item Jayachandran, Krishnaswamy - FLORIDA INTRNL UNIVERSITY
item Novak, Jeffrey
item Nair, M - FLORIDA INTRNL UNIVERSITY
item Watts, Donald
item Hunt, Patrick

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: October 31, 1999
Publication Date: N/A

Technical Abstract: It is important to evaluate agricultural management practices which influence SOM dynamics and pesticide behavior in SE Coastal Plain soils since the soils are inherently sandy and low in OM. The objectives of our study are: 1) to investigate the microbial properties of soils under long-term conservation and conventional tillage, and 2) to establish relationships of these properties with atrazine sorption and soil physico-chemical properties. Composite soil samples were collected from two tillage plots that were under 20 yrs of conservation and conventional tillage in Darlington, SC. The soils were characterized for specific physical, chemical, and microbiological properties. Populations of atrazine-degraders and atrazine sorption coefficients were also determined. The effects of tillage on these chemical and microbial properties and the atrazine degradation potential will be discussed.

Last Modified: 7/23/2014