By W. P. Wadman, C. M. J. Sluijsmans, L. C. N. De La Lande Cremer (auth.), H. G. Van Der Meer, R. J. Unwin, T. A. Van Dijk, G. C. Ennik (eds.)
On the get together of its twenty-fifth anniversary, in 1985, the Netherlands Society for Grassland and Fodder plants (NVWV) agreed to arrange a world Symposium on a subject regarding extensive grass and fodder creation structures. The subject matter chosen used to be "Animal manure on grassland and fodder vegetation: Fertilizer or waste?" This Symposium was once equipped below the auspices of the eu Grassland Federation and held on the foreign Agricultural Centre in Wageningen from 31 August to three September 1987. the issues attached with the disposal of animal waste have bought a lot recognition in recent times, specifically in areas with in depth animal of animal manure in line with hectare agricul husbandry. while the creation tural land elevated strongly, the necessity for it diminished due to the advent of inexpensive inorganic fertilizers that are more uncomplicated to address and feature a extra trustworthy impression on crop progress. hence, many farmers cast off animal manure as affordably as attainable, when warding off harm to grassland and plants and paying little recognition to potent use of the vegetation food inside the manure. current practices of manure dealing with and alertness usually bring about environmental difficulties. the increase in expertise of those difficulties renewed curiosity in percentages to enhance the usage of foodstuff from animal manure in crop creation. examine in this subject has been prompted in lots of nations over the last decade and the purpose of this Symposium was once to study and verify present-day knowledge.
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Additional resources for Animal Manure on Grassland and Fodder Crops. Fertilizer or Waste?: Proceedings of an International Symposium of the European Grassland Federation, Wageningen, The Netherlands, 31 August–3 September 1987
The rates of slurry presented in Table I were target rates. The actual rates applied were recorded by the slurry application unit. They generally differed less than ten per cent from the target rates and are used in the analysis of results. Slurry was applied with the Schepan MMM slurry application unit  each spring when the T sum had reached 200°C  and the experimental field was sufficiently dry to support the tractor and slurry application equipment. Generally, this was between 15 March and 20 April.
Oldham J D (1987) Efficiencies of amino acid utilization. In Alderman G and Jarrige R, eds. Feed evaluation and protein requirements systems for ruminants. Report (in press). Luxembourg: Commission of the European Communities 19. Owens F N (1987) Maintenance protein requirements. In Alderman G and Jarrige R, eds. Feed evaluation and protein requirements systems for ruminants. Report (in press). Luxembourg: Commission of the European Communities 20. Owens F N (1987) The US-NRC approach to ruminant nitrogen usage.
The amount ofN supplied from soil organic N increases upon long-term application of manure. This build-up makes it easier to calculate N supply to the crop [7, 15, 17]. Transformations of manure phosphates in the soil In both soil types in the pot experiments mentioned above, mineralization of organic P from the added manures was found to take place. It appeared to be followed by immobilization of inorganic P. Because of the rather limited increase of soil total-P content due to the added manures and the greater variation in the analytical data, the results of P mineralization are less reliable than those for N mineralization.