Authors: G. Gangbazo, D. Couillard, A.R. Pesant et D. Cluis
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Published in: CBE Journal » CBE Journal Volume 35 (1993)

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Description: Total Kjeldahl (TKN), ammonium (NH4-N) and nitrate nitrogen (NO3-N), total phosphorus (PT) and orthophosphate (PO4-P) loads were measured in the runoff following rainfall after hog manure was applied to a Coaticook clay loam soil (Humic Gleysol) in boxes of 0.26m2 areawith a3%slope, containing 400mmof soil. Afactorial treatmentcombinationof three hog manure application rates (0, 27.3 and 54.6 m3?ha_1) with and without incorporation, two simulated rainfalls with spring time intensities common in Southeastern Que bec (11 mm.h for 142 min and 22 mm?h_1 for 71 min for a total application of 26mm)and three different rainfall delays (1, 24,and 48 h between time of manure application and beginning of each rainfall) were studied. Hog manure had little effect on TKN and NO3-Nin runoff. More than 99% of TKN losses in runoff water were in the form ofNH4-N. Runoff from soils having received hog manure at the highest application rate (54.6 m3?ha_1, 230 kg ofNH4-N?ha" ) was eleven times higher in NH4-N than that from untreated soil. Surface application of hogmanure significantly increased all forms of nitrogen and phosphorus losses, especially when rainfall was applied within thefirst hour after application. Incorporation into the soil hadno significant effects on nitrogen and phosphorus loads. At the one hour rainfall delay, surface application of hog manure pro duced a significant quadratic effect onNH4-N loads (0.06, 6.8, and 40.6 kg?ha_1) which corresponded to the manure rates. For the two other rainfall delays (24h and 48h) manure rates hada linear effect with much lowerloads. Totalphosphorus andorthophosphate loads were in form to those of ammonium nitrogen but with much lower values. Tominimize all runoffpollution bynitrogen andphosphorus, optimum amounts of hog manure for plant requirements must be incorporated into the soil within 24h before a rainfall event.

Citation: G. Gangbazo, D. Couillard, A.R. Pesant et D. Cluis 1993. EFFETS DU LISIER DE PORC SUR LA CHARGE D'AZOTE ET DE PHOSPHORE DANS L'EAU DE RUISSELLEMENT SOUS DES PLUIES SIMULEES. Canadian Agricultural Engineering 35(2):97-103.
Volume: 35
Issue: 2
Pages -
Date: 1993
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Type: Text.Article
Format: PDF
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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