期刊
BIOMASS & BIOENERGY
卷 35, 期 10, 页码 4165-4173出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2011.06.037
关键词
Fast growing willow; SRIC; Pig slurry; Fertilization; Nitrate; Phosphorus
资金
- Conseil pour le developpement de l'agriculture du Quebec (CDAC)
- Quebec Pork Producers Federation (FPPQ)
- Fonds de recherche sur la nature et les technologies (FQRNT)
- la Cooperative de gestion des engrais organiques de Lanaudiere (COGENOR Lanaudiere)
- Agro-Energie Institut de recherche et de developpement en agroenvironnement (IRDA)
- Institut de recherche en biologie vegetale (IRBV)
The aim of this study is to investigate the effect of the use of pig slurry as fertilizer on the productivity of a willow plantation, while evaluating the risk of a negative impact on the environment. We evaluated plant response to increasing slurry amounts and compared this response to the effect of mineral fertilization. We also verified the impact of slurry on soil nutritional content as well as on nitrate and phosphorus concentrations in the soil. Although slurry nitrogen was less efficient than mineral fertilizer, the results of our study show that slurry constitutes an effective fertilizer for willow plantations. In fact, yields over two years on plots that received increasing amounts of slurry were on the order of 30.0-32.9 t/ha. We observed an increase in soil levels of nitrates, copper and zinc as a function of increasing slurry amounts. These levels actually decreased during the second growing season, possibly due to uptake by the willows. Springtime concentrations of water in lysimeters indicated that the maximum quantity of slurry tested was accompanied by a certain risk of nitrates leaching into the soil. (C) 2011 Elsevier Ltd. All rights reserved.
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