Date of Graduation
12-2017
Document Type
Thesis
Degree Name
Master of Science in Crop, Soil & Environmental Sciences (MS)
Degree Level
Graduate
Department
Crop, Soil & Environmental Sciences
Advisor/Mentor
Brye, Kristofor R.
Committee Member
Gbur, Edward E. Jr.
Second Committee Member
Savin, Mary C.
Third Committee Member
Mason, Richard E.
Keywords
Infiltration; Light fraction; Microbial biomass; Particulate organic matter; Wheat-soybean; Double crop
Abstract
Improving the understanding of conventional and alternative management practices and their interactions on aggregate-derived particulate organic matter (POM) fractions and soil hydraulic properties, particularly infiltration, is instrumental to soil and groundwater management and long-term sustainability in the Lower Mississippi River Delta (LMRD) region of eastern Arkansas. The objective of this long-term wheat (Triticum aestivum L.)-soybean (Glycine max [L.] Merr.), double-crop (WSDC) field study in a silt-loam soil (Glossaquic Fraglossudalf) in the LMRD region of eastern Arkansas was to evaluate the effects of conventional and alternative management practices, including wheat-residue level, residue burning, tillage and irrigation, on i) POM fractions and the distribution of C and N among POM fractions, including the total POM, light fraction (LF) and intra-POM (iPOM) fraction, in the top 10 cm of soil after 14 years of consistent management and ii) falling-head and tension infiltration after 11 and 14 years of consistent management. Long-term treatment combinations affected (P < 0.05) several macro- (53-250 μm) and micro-aggregate-(
Citation
Desrochers, J. (2017). Agronomic Management Practice Effects on Particulate Organic Matter and Infiltration in a Wheat-soybean, Double-crop System in Eastern Arkansas. Graduate Theses and Dissertations Retrieved from https://scholarworks.uark.edu/etd/2592
