Crop Response to Poultry Litter and Deep Tillage Following Land Leveling in a Clay Soil
- K. R. Brye *a
Land leveling results in severe soil disturbance. Several agronomic practices have been recommended (i.e., poultry litter application) or suggested (i.e., deep tillage) to help restore soil tilth following land leveling. The objective of this study was to determine the effects of poultry litter application and deep tillage on crop response in the first two growing seasons following land leveling of a clay soil in Mississippi Co., AR. Though land leveling in a clay soil significantly altered the magnitude, variability, and spatial distribution of many soil physical, chemical, and biological properties, crop response to poultry litter application and deep tillage was minimal. With the exception of greater soybean yield in plots that did not receive deep tillage compared to those that were deep tilled in the first year after land leveling, neither the application of 1 ton/acre of fresh poultry litter nor deep tillage in both years following leveling resulted in a rice yield response in the second year after leveling. Results indicate that land leveling a clay soil may not cause sufficient surface compaction to allow for a significant positive crop response to deep-tillage. Results also indicate that 1 ton/acre of fresh poultry litter may be insufficient to produce a short-term, positive crop response on clay soils.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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