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Registros recuperados: 8
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Organic farming: technology transfer (Environmental impact and soil fertility) (OF0405) Organic Eprints
Shepherd, Mark; Pearce, Bruce; Cormack, Bill; Philipps, Lois; Cuttle, Steve; Bhogal, Anne; Costigan, Peter; Unwin, Roger.
This project covered two separate activities, but both were examples of technology transfer, relating to organic farming: 1. Developing a science-based report, which covered an assessment of the environmental impacts of organic farming. Defra’s Action Plan to Develop Organic Food and Farming included as Annexe 3 an assessment of the environmental impacts of organic farming. This paper was prepared by a Subgroup of the Action Plan for Organic Farming. Its purpose was to summarise the Subgroup’s views of the likely comparative effects of organic and conventional farming on the environment. However, to be robust and defensible, the assessment needs to be supported by scientific data. Although the report was based on such an assessment, the scientific...
Tipo: Report Palavras-chave: Environmental aspects; Soil; Technology transfer.
Ano: 2003 URL: http://orgprints.org/6784/1/OF0405_2179_FRP.pdf
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Theory and reality of organic soil fertility - organic matter Organic Eprints
Gosling, Paul; Shepherd, Mark.
This report was presented at the UK Organic Research 2002 Conference. Results are reported suggesting no significant difference between the level of soil organic matter on established organic farms in Southern England and paired conventionally managed farms. We discuss the possible reasons for this and also examine why the literature on this subject is frequently contradictory.
Tipo: Conference paper, poster, etc. Palavras-chave: Research methodology and philosophy; Soil; Farming Systems; Soil quality.
Ano: 2002 URL: http://orgprints.org/8267/1/gosling_shepherd_Theory_soil__fertility.pdf
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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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Understanding soil nitrogen supply: organic matter quality and quantity Organic Eprints
Shepherd, Mark; Hatch, David; Hatley, Damian.
The soil organic matter (SOM) contents of organic and conventionally farmed soils were compared. Whilst the quantity of SOM was found to be similar with both systems, the quality of SOM differed in respect of higher amounts of N released by the organic soils under anaerobic incubation. This indicated a greater potential rate of mineralization and suggested that the inherent fertility of the organic soils had been improved
Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Farming Systems; Soil quality.
Ano: 2002 URL: http://orgprints.org/8263/1/Hatch_soil_nitrogen_supply.pdf
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Managing Manure on Organic Farms Organic Eprints
Shepherd, Mark; Gibbs, Paul; Philipps, Lois.
The booklet provides information on typical nutrient contents of livestock manures – from organic and ‘conventional’ sources; describes the availability of manure nutrients to the growing crop; outlines best management practices to optimise manure nutrient supply and outlines best management practices to optimise manure nutrient supply. It draws on scientific research undertaken in the 1990, much of it in the UK, and most of it funded by DEFRA.
Tipo: Book Palavras-chave: Nutrient turnover.
Ano: 2002 URL: http://orgprints.org/24819/1/Booklet4ManuresOrganic.pdf
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Assessing soil structure in organically farmed soils Organic Eprints
Shepherd, Mark; Hatley, Damian; Gosling, Paul.
This report was presented at the UK Organic Research 2002 Conference. Soil structure was assessed in over 90 fields (organic and conventionally farmed) covering mixed, stockless and pasture farming systems. A combination of spade and an objective scoring system based on the degree of aggregation and porosity was able to detect differences between fields. On average, in the fields sampled, topsoil structure was slightly better on the organic farms though, even on the conventional fields, structure was unlikely to limit crop growth.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil; Soil quality.
Ano: 2002 URL: http://orgprints.org/8384/1/shepherd_soil_structure_farmed.pdf
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Understanding soil nitrogen supply: organic matter quality and quantity Organic Eprints
Hatch, David; Shepherd, Mark; Hatley, Damian.
This report was presented at the UK Organic Research 2002 Conference. The soil organic matter (SOM) contents of organic and conventionally farmed soils were compared. Whilst the quantity of SOM was found to be similar with both systems, the quality of SOM differed in respect of higher amounts of N released by the organic soils under anaerobic incubation. This indicated a greater potential rate of mineralization and suggested that the inherent fertility of the organic soils had been improved
Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Farming Systems; Soil quality.
Ano: 2002 URL: http://orgprints.org/8262/1/Hatch_soil_nitrogen_supply.pdf
Registros recuperados: 8
Primeira ... 1 ... Última
 

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