TY - GEN
T1 - Wheat strip effects on nutrient transport following manure application
AU - Thayer, Chance A.
AU - Gilley, John E.
AU - Durso, Lisa M.
AU - Marx, David B.
PY - 2011
Y1 - 2011
N2 - Cultivation of crops in strips following the contours of the land to minimize erosion is a well-established conservation practice. This study was conducted to measure the effectiveness of a narrow wheat strip in reducing runoff nutrient transport from plots with a range of soil nutrient values. Beef cattle manure was applied to a silty clay loam soil at rates needed to meet a zero, one, two or four year corn P requirement. Three 30 minute simulated rainfall events, separated by 24 hour intervals, were applied. Excessive amounts of manure were added after the initial tests were completed to meet 8, 12, 16 or 20 year corn P requirements to determine the effects of excessive manure application on runoff nutrient transport. The effects of a narrow wheat strip, manure application rate, and runoff rate on nutrient transport were determined using ANOVA. The wheat strip significantly reduced the mean transport of DP, NO3-N, NH4-N, and TN in runoff. The wheat strip also reduced EC of runoff, particularly when excessive amounts of manure were applied. Manure rate significantly affected measurements of DP, PP, TP, NH 4-N, TN and EC. Runoff rates significantly affected each of the measured runoff water quality parameters. When manure was applied to meet the 8, 12, 16, or 20 year crop P requirements, DP, PP, TP and NH4-N transport generally increased as application rates increased. The results indicate that wheat strips can reduce N and P transport in runoff.
AB - Cultivation of crops in strips following the contours of the land to minimize erosion is a well-established conservation practice. This study was conducted to measure the effectiveness of a narrow wheat strip in reducing runoff nutrient transport from plots with a range of soil nutrient values. Beef cattle manure was applied to a silty clay loam soil at rates needed to meet a zero, one, two or four year corn P requirement. Three 30 minute simulated rainfall events, separated by 24 hour intervals, were applied. Excessive amounts of manure were added after the initial tests were completed to meet 8, 12, 16 or 20 year corn P requirements to determine the effects of excessive manure application on runoff nutrient transport. The effects of a narrow wheat strip, manure application rate, and runoff rate on nutrient transport were determined using ANOVA. The wheat strip significantly reduced the mean transport of DP, NO3-N, NH4-N, and TN in runoff. The wheat strip also reduced EC of runoff, particularly when excessive amounts of manure were applied. Manure rate significantly affected measurements of DP, PP, TP, NH 4-N, TN and EC. Runoff rates significantly affected each of the measured runoff water quality parameters. When manure was applied to meet the 8, 12, 16, or 20 year crop P requirements, DP, PP, TP and NH4-N transport generally increased as application rates increased. The results indicate that wheat strips can reduce N and P transport in runoff.
KW - Erosion
KW - Land application
KW - Manure management
KW - Manure runoff
KW - Nitrogen movement
KW - Nutrient losses
KW - Phosphorus
KW - Runoff
KW - Water quality
KW - Water quality management
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M3 - Conference contribution
AN - SCOPUS:81255154210
SN - 9781618391568
T3 - American Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011
SP - 5655
EP - 5678
BT - American Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011
PB - American Society of Agricultural and Biological Engineers
T2 - American Society of Agricultural and Biological Engineers Annual International Meeting 2011
Y2 - 7 August 2011 through 10 August 2011
ER -