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Tools for managing manure nutrients Organic Eprints
Shepherd, Mark; Philipps, Lois; Webb, John.
Manures are a valuable source of nutrients (and organic matter), and can be seen as a method of transferring nutrients around the farm (for homeproduced manures) or as a method of importing fertility (imported manures or composts). Good manure management offers a ‘win-win’ opportunity: benefits to soil fertility and benefits to the environment (less pollution). This paper describes two tools for manure nutrient planning: the use of look-up tables to assess nutrient content, and the development of a Decision Support Tool for describing nutrient transformations during manure management.
Tipo: Conference paper, poster, etc. Palavras-chave: Education; Extension and communication Knowledge management Farm nutrient management.
Ano: 2002 URL: http://orgprints.org/8233/1/shepherd_managing_manure_nutrients.pdf
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The effect of organic farming systems on aspects of the environment - desk study OF0123 Organic Eprints
Unwin, Roger; Bell, Barbara; Shepherd, Mark; Webb, John; Keatinge, Ray; Bailey, Steven.
Key Conclusions 1. The crop rotations of organic systems maintain landscape diversity and biodiversity whilst the maintenance of field boundaries on organic units produces benefits to a wide range of organisms. 2. Inorganic nitrogen fertilisation and herbicide treatments of conventionally managed grassland has reduced the floral diversity of permanent pastures and maintained the low diversity of re-seeded pastures, greatly reducing their value as wildlife habitats. 3. Pesticide use is responsible for the removal of food sourcesfor birds and mammals in the form of weeds and invertebrates, as well as removing whole populations of potentially beneficial insects. 4. The majority of water pollution incidents from farms are caused during storage and...
Tipo: Report Palavras-chave: Environmental aspects.
Ano: 1995 URL: http://orgprints.org/9938/1/the_effect_of_organic_farming_systems_on_aspects_of_the_environment.pdf
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