Characterization of Historical Precipitation Data in Relation to Production Risk of Fall-stockpiled Tall Fescue
W. M. Clapham, J. M. Fedders, C. D. Teutsch, and W. M. Tilson
Weather data collected during field experiments are not often compared to long-term weather records in meaningful ways. We examine the results of a study of N application on yield of fall-stockpiled tall fescue in relation to concomitant and historical late-season precipitation in the Southern Piedmont Region of Virginia. Previous analysis indicated that splitting applications of 40 or 80 lb N/acre increased the probability of achieving designated yield goals. However, yields were also affected by precipitation during the stockpiling period. Monthly precipitation during the study was compared to the 58-year historical record via percentile distributions, principal component analysis, and Monte Carlo simulation.
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