ORBi: Dufrasne Isabelle - Nitrogen balance and nitrate residues in pastures grazed by dairy cows and fertilised with mineral fertiliser, pig slurry or cattle compost

Reference : Nitrogen balance and nitrate residues in pastures grazed by dairy cows and fertilised wi...


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Life sciences : Animal production & animal husbandry
	To cite this reference:	http://hdl.handle.net/2268/8638

Title :	Nitrogen balance and nitrate residues in pastures grazed by dairy cows and fertilised with mineral fertiliser, pig slurry or cattle compost
Language :	English
Author, co-author :	Dufrasne, Isabelle [Université de Liège - ULg > Département de productions animales > Nutrition des animaux domestiques >]
	Meura, Stéphane [ > > ]
	Cabaraux, Jean-François [Université de Liège - ULg > Département de productions animales > Ecologie et éthologie vétérinaires >]
	Istasse, Louis [Université de Liège - ULg > Département de productions animales > Nutrition des animaux domestiques >]
	Hornick, Jean-Luc [Université de Liège - ULg > Département de productions animales > Nutrition des animaux domestiques >]
Publication date :	2007
Main document title :	Permanent and temporary grassland plant, environment and economy; A. De Vliegher and L. Carlier (Eds); Proceedings of 14th symposium of the European Grassland Federation
Collection and collection volume :	Grassland Science in Europe, Vol 12
Pages :	343-346
On invitation :	No
Audience :	International
Event name :	14th symposium of the European Grassland Federation
Event date :	3-5 septembre
Event organizer :	EGF
Event place (city) :	Ghent
Event country :	Belgique
Keywords :	[en] fertilisation ; dairy cows ; nitrogen ; slurry ; compost
Abstract :	[en] A code of good practices was established by each European member state according to the nitrate directive. In Belgium, the nitrogen (N) inputs from slurry or compost are limited to 230 kg N/ha in pastures. Larger amounts can be applied when a program of additional measurements, including soil nitrates analysis, is followed by the farmer. This trial aims to measure nitrogen balance and soil nitrates in pastures fertilised with mineral nitrogen fertiliser (min N), pig slurry (S) or cattle compost (C). The pastures were grazed by dairy cows and the fertilisation allowed similar efficient N levels. N inputs by fertilisation were different at 169, 170 and 102 kg N/ha in C, S and min N plots respectively. The use of pig slurry and cattle compost as compared with mineral N fertiliser increased N balance and reduced apparent N efficiency. The nitrogen, potassium and phosphorus nutrition indexes, the number of grazing days and the milk yields per ha were not different. The soil nitrate contents were not increased by use of slurry or compost. The overall low nitrate contents suggested a low nitrate leaching with the three types of fertilisation.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/8638

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