HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Google Scholar Articles by Chantigny, M. H. Articles by Gasser, M.-O. PubMed Articles by Chantigny, M. H. Articles by Gasser, M.-O. Agricola Articles by Chantigny, M. H. Articles by Gasser, M.-O. Related Collections Sustainable Agriculture Maize Nutrient Management Animal Waste

MANURE

Yield and Nutrient Export of Grain Corn Fertilized with Raw and Treated Liquid Swine Manure

^a Agric. and Agri-Food Canada, Soils and Crops Res. and Dev. Cent., 2560 Hochelaga Blvd, Québec, QC, Canada, G1V 2J3
^b Agric. and Agri-Food Canada, Pacific Agric. Res. Cent., Box 1000, Agassiz, BC, Canada, V0M 1A0
^c Agric. and Agri-Food Canada, Brandon Res. Cent., 18th St. & Grand Valley Road, Brandon, MB, Canada, R7A 5Y3;
^d Agric. and Agri-Food Canada, Dairy Cattle and Swine Res. Cent., 2000 College St., C.P. 90, Sherbrooke, QC, Canada, J1M 1Z3
^e Inst. de recherche et de dév. en agroenvironnement, 2700 Einstein St., Québec, QC, Canada, G1P 3W8

^* Corresponding author (chantignym{at}agr.gc.ca).

Treatment of liquid swine manure (LSM) is an option to improve nutrient management. Mineral fertilizer, raw LSM, and LSM treated by anaerobic digestion, flocculation, filtration, or natural decantation were sidedressed (100 kg N ha^–1) to grain corn (Zea mays L.) on a clay and a loam soil. Over 3 yr, corn grain yield (6 to 11 Mg ha^–1), N export (83 to 176 kg ha^–1), and P export (19 to 40 kg ha^–1) were similar among LSM types and between LSMs and mineral fertilizer. This was attributed to the immediate incorporation of LSM to minimize N volatilization. Treated LSMs reduced P input to soil by 3 to 24 kg ha^–1, compared with raw LSM. This reduced corn P export by 2 to 4 kg ha^–1 on the clay soil, but had no effect on the loam soil. Soil NO₃ content after harvest was higher with the mineral fertilizer (19–31 kg NO₃–N ha^–1) than with LSMs (13–20 kg NO₃–N ha^–1) in the clay soil, but was similar for all treatments in the loam soil. We conclude that when sidedressed to corn and immediately incorporated, raw and treated LSMs have a fertilizer value similar to the mineral fertilizer. Moreover, the risk of postharvest NO₃ accumulation with the raw and treated LSMs was similar to mineral fertilizer on the loam and lower on the clay.

Abbreviations: LSM, liquid swine manure • DM, dry matter • FUE, fertilizer use efficiency • ANR, apparent N recovery

All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.

Received for publication November 1, 2007.