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4 December 2017 Nitrogen and phosphorus uptake from solid and liquid pig manure in perennial and annual cropping systems
Rezvan Karimi, Wole Akinremi, Don Flaten
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Abstract

Applying pig manure in excess of crop demand can result in nutrient loss to water bodies. We studied the effect of liquid and solid pig manures and their N- and P-based application rates on yield and nutrient uptake in annual and perennial cropping systems for 3 yr. The experiment had a split-plot design with five nutrient management treatments including liquid-N (annual N-based liquid pig manure), liquid-P (P-based liquid pig manure once every 5 yr), solid-N (annual N-based solid pig manure), solid-P (P-based solid pig manure once every 5 yr), and control (no manure). The liquid-P treatment showed high apparent nitrogen and phosphorus recovery (ANR and APR, respectively) in each cropping system and yields similar to that of the liquid-N treatment. The solid-N treatment had the smallest ANR in the perennial cropping system (9%–27%) and also the smallest APR in both cropping systems (typically <4%) possibly due to N deficiency and high P application rate. The current formula for estimating organic N mineralization overestimated the available N, particularly for solid pig manure, reducing crop yield. Based on the ANR obtained in this study, a more appropriate coefficient is 10%–15% of the organic N from solid pig manure for no-till perennial cropping systems.

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Rezvan Karimi, Wole Akinremi, and Don Flaten "Nitrogen and phosphorus uptake from solid and liquid pig manure in perennial and annual cropping systems," Canadian Journal of Plant Science 98(3), 771-781, (4 December 2017). https://doi.org/10.1139/cjps-2017-0160
Received: 17 May 2017; Accepted: 2 November 2017; Published: 4 December 2017
JOURNAL ARTICLE
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KEYWORDS
ANR
APR
basé sur la concentration de N et de P
biomass
biomasse
fumier
manure
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