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United States Department of Agriculture

Agricultural Research Service

Title: Crop Utilization of N and P from Soils Receiving Manure from Swine Fed Low Phytate and Traditional Corn Diets

Authors
item Paschold, Julie
item Wienhold, Brian
item Ferguson, Richard - UNIV OF NE

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: July 30, 2000
Publication Date: October 10, 2000
Citation: PASCHOLD, J.S., WIENHOLD, B.J., FERGUSON, R. CROP UTILIZATION OF N AND P FROM SOILS RECEIVING MANURE FROM SWINE FED LOW PHYTATE AND TRADITIONAL CORN DIETS. AGRONOMY ABSTRACTS. P. 352. 2000.

Interpretive Summary: Land application of swine manure at rates to meet the nitrogen (N) requirements of the crop often results in addition of phosphorus (P) in amounts that exceed crop uptake. The P in low phytate corn in more bioavailable to monogastric animals. We compared crop utilization of N and P applied as manure from swine fed a low phytate corn (LP) diet, manure from swine fed a traditional corn (TC) diet, and that applied as inorganic fertilizer (IF). Crop utilization of N and P was higher for LP manure than for TC or IF when incorporated after application. Utilization of N was similar among fertilizer treatments and utilization of P appeared to be related to application rate when surface applied to a no-tillage field. These results suggest that manure from swine fed a LP corn diet is a reliable source of N and P.

Technical Abstract: Land application of swine manure at rates to meet the nitrogen (N) requirements of the crop often results in addition of phosphorus (P) in amounts that exceed crop uptake. The P in low phytate corn in more bioavailable to monogastric animals. We compared crop utilization of N and P applied as manure from swine fed a low phytate corn (LP) diet, manure from swine fed a traditional corn (TC) diet, and that applied as inorganic fertilizer (IF). Crop utilization of N and P was higher for LP manure than for TC or IF when incorporated after application. Utilization of N was similar among fertilizer treatments and utilization of P appeared to be related to application rate when surface applied to a no-tillage field. These results suggest that manure from swine fed a LP corn diet is a reliable source of N and P.

Last Modified: 12/18/2014
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