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 celebration of its twenty-fifth anniversary, in 1985, the Netherlands Society for Grassland and Fodder plants (NVWV) agreed to arrange a world Symposium on an issue regarding in depth grass and fodder construction platforms. The subject matter chosen used to be "Animal manure on grassland and fodder vegetation: Fertilizer or waste?" This Symposium was once geared up below the auspices of the ecu 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 acquired a lot realization lately, specifically in areas with in depth animal of animal manure in step with hectare agricul husbandry. while the construction tural land elevated strongly, the necessity for it reduced as a result advent of inexpensive inorganic fertilizers that are more uncomplicated to deal with and feature a extra trustworthy influence on crop development. subsequently, many farmers get rid of animal manure as cost effectively as attainable, while averting harm to grassland and plants and paying little realization to powerful use of the crops food inside the manure. current practices of manure dealing with and alertness usually bring about environmental difficulties. the increase in information of those difficulties renewed curiosity in probabilities to enhance the usage of food from animal manure in crop construction. examine in this subject has been prompted in lots of international locations over the past decade and the purpose of this Symposium was once to check and check present-day knowledge.
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Additional info 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
Soest P J van (1966) Nonnutritive residues: A system for the replacement of crude fibre. Journal of the Association of Agricultural Chemists 49, 546-551 21. Spoelstra S F (1978) Microbial aspects of the formation of malodorous compounds in anaerobically stored piggery wastes. Thesis Agricultural University Wageningen, 91 pp. 22. Turner D 0 (1975) On-the-farm-determination of animal waste disposal rates for crop production. In Managing livestock wastes. Proceedings of the third international Symposium on Livestock wastes, pp 587-590.
It is often assumed that organic matter with CjN-organic < 25 always shows a net mineralization of N. Here it was found, especially with the cow faeces in the sandy loam soil, that net N immobilization occurred for I to 5 months even when CjN-organic was :( 16. The difference in the composition of the soil microfloras may explain the stronger N immobilization in the sandy loam soil than in the sandy soil. In the calcareous sandy loam soil bacteria with a CjN of about 4 predominate; in the sandy soil fungi with a CjN of about 10 are predominant.
7 Norg Cox Table 6. 0 40 much lower; its uric acid had already been mineralized during storage to ammonium and nitrate, and the inorganic N thus formed must have been largely lost due to volatilization of NH3 and perhaps denitrification of nitrate. In the sandy soil on average 38% of the added organic N from the pig and cow faeces was mineralized during the first 6 months of incubation, and in the following year on average another 15%. The corresponding figures for the sandy loam soil were 25% and 9%.
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 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.)