NDLI: Evaluating a Rapid On-Farm Nutrient Determination Model for Use in Implementing Nutrient Management Plans

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Evaluating a Rapid On-Farm Nutrient Determination Model for Use in Implementing Nutrient Management Plans

Content Provider	Semantic Scholar
Author	Higgins, Stephen F. Coyne, Mark S. Shearer, Scott A. Fulton, John P.
Copyright Year	2006
Abstract	Government regulatory agencies recommend nutrient management plans (NMPs) for animal operations to reduce non-point source pollution. These plans require manure analysis for total nitrogen (TN) and total phosphorus (TP), and use indices to determine nutrient availability. This study evaluated a rapid on-farm method to predict TN and TP concentrations of swine slurries. A field investigation based on this rapid assessment procedure was used to evaluate the effect of a NMP on corn yield and soil fertility. Manure grab samples were collected to validate the rapid on-farm model for predicting TN and TP. A corn crop was raised on two phosphorus (P) soil test levels (medium and excessive) using three randomized complete blocks with two replications of three treatments. Rapid on-farm models were accurate (P ≤ 0.05) for predicting manure TN and TP. The rapid model manure application rate produced grain yields that were significantly higher than inorganic-N fertilization treatments (13,000 kg ha−1 versus 9,000 kg ha−1) (P ≤ 0.05). Potassium chloride extractable soil P and ammonium were not significantly different (P ≥ 0.05) in manure treatments compared with the inorganic-N treatment. Analysis of ear leaf N, P, and K and grain yields demonstrated that the rapid model manure application developed by a NMP met crop requirements.
Starting Page	333
Ending Page	358
Page Count	26
File Format	PDF HTM / HTML
DOI	10.1007/s11270-005-9059-9
Alternate Webpage(s)	http://www.prairieswine.com/pdf/8618.pdf
Alternate Webpage(s)	https://doi.org/10.1007/s11270-005-9059-9
Volume Number	171
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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