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Full-Text Articles in Physical Sciences and Mathematics
Crop Yield Response To Precision Deep Tillage, Larry G. Wells, Timothy S. Stombaugh, Scott A. Shearer
Crop Yield Response To Precision Deep Tillage, Larry G. Wells, Timothy S. Stombaugh, Scott A. Shearer
Biosystems and Agricultural Engineering Faculty Publications
Experimental precision deep tillage was applied at three sites in central Kentucky with relatively well-drained silt loam soils in no-till crop production. Fields were divided into 0.4 ha (1 ac) grid cells using DGPS mapping. Assessment of soil compaction by machinery traffic was made using multiple soil cone penetrometer measurements and expressed as cone index (CI). Corn, wheat, and soybean yields were depressed in grid cells with CIavg ≥ 1.5 MPa (218 psi) prior to application of tillage treatments at sites 1 and 3, whereas at site 2, where most of the highest average CI values ranged from 1.44 …
Streambank Erosion Associated With Grazing Practices In The Humid Region, Carmen T. Agouridis, Dwayne R. Edwards, Stephen R. Workman, José R. Bicudo, Benjamin K. Koostra, Eric S. Vanzant, Joseph L. Taraba
Streambank Erosion Associated With Grazing Practices In The Humid Region, Carmen T. Agouridis, Dwayne R. Edwards, Stephen R. Workman, José R. Bicudo, Benjamin K. Koostra, Eric S. Vanzant, Joseph L. Taraba
Biosystems and Agricultural Engineering Faculty Publications
The effects of cattle grazing on stream stability have been well documented for the western portion of the U.S., but are lacking for the east. Stream and riparian damage resulting from grazing can include alterations in watershed hydrology, changes to stream morphology, soil compaction and erosion, destruction of vegetation, and water quality impairments. However, few studies have examined the successes of best management practices (BMPs) for mitigating these effects. The objective of this project was to assess the ability of two common BMPs to reduce streambank erosion along a central Kentucky stream. The project site consisted of two replications of …