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	Provedor de dados Organic Eprints (2) Autor Atkinson, David (2) Litterick, Audrey M (1) Rees, Robert (1) Sanders, Ian (1) Watson, Christine (1) Watson, Christine A (1) Mais... Palavra-chave Crop combinations and interactions (1) Crop health (1) Farm nutrient management (1) Protection Weed management Knowledge management (1) Quality (1) Tipo do documento Conference paper, poster, etc. (2) Ano 2002 (2) País Germany (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Crop protection in organic agriculture - a simple matter? Organic Eprints Litterick, Audrey M; Watson, Christine A; Atkinson, David. This report was presented at the UK Organic Research 2002 Conference. Crop protection strategies in organic agriculture and horticulture aim to prevent pest, disease and weed problems through optimisation of the cropping system as a whole. Choice of crops and varieties within the rotation and use of appropriate husbandry practices are critical to the success of the system and direct curative action against pests and diseases is rarely necessary. Research is urgently needed to determine strategies for control of key pests and diseases in organic systems if UK organic agriculture is to expand to meet increasing consumer demand. This paper describes current prevention and control strategies for pests, diseases and weeds in UK organic agriculture and... Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Weed management Knowledge management. Ano: 2002 URL: http://orgprints.org/8393/1/litterick_crop_protection.pdf Nitrogen fixation and soil nitrogen in organic ley arable rotations Organic Eprints Sanders, Ian; Watson, Christine; Rees, Robert; Atkinson, David. This report was presented at the UK Organic Research 2002 Conference. Nitrogen (N) fixation in a white clover/ryegrass mixture was measured in 1,2,3 and 4-year-old organically managed leys during 2000. N fixation varied between 73.7 in 1-year-old leys and 33.5 kg ha-1 in 4-year-old leys. Soil nitrate-N, grass N yield and N content of grass and clover were all lowest in 2-year-old leys and highest in 3-year-old leys. The proportion of clover nitrogen derived from the atmosphere (pNdfa) was significantly lower in 3-year-old leys. Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Farm nutrient management. Ano: 2002 URL: http://orgprints.org/8366/1/sanders_Nitrogen_fixation_ley_rotations.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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