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Variable-rate Phosphorus Fertilization: On-farm Research Methods and Evaluation for Corn and Soybean
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@MISC{Mallarino_variable-ratephosphorus,
author = {A. P. Mallarino and D. J. Wittry and D. Dousa and P. N. Hinz},
title = {Variable-rate Phosphorus Fertilization: On-farm Research Methods and Evaluation for Corn and Soybean},
year = {}
}
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Abstract
This study adapted precision agriculture technologies to commonly used field-scale strip trials and compared fixed and variable phosphorus (P) fertilization for corn (Zea mays L.) and soybean [Glycine max (L.) Merr.]. Differential global positioning receivers, yield monitors, and grid soil sampling were used. Variablerate fertilization reduced considerably the total amount of P fertilizer applied in two of four fields and increased yields in one field. Statistical analysis that accounted for spatial correlation of yield improved the evaluation of treatment effects. The results showed that a combination of traditional on-farm strip trials, precision farming technologies, and statistical methods that account for spatial correlation of yields can be used to obtain more thorough comparisons of management practices.
Keyphrases
variable-rate phosphorus fertilization on-farm research method spatial correlation variable phosphorus management practice grid soil sampling precision farming technology yield monitor differential global positioning receiver variablerate fertilization soybean glycine max field-scale strip trial statistical method precision agriculture technology statistical analysis traditional on-farm strip trial treatment effect total amount thorough comparison
