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	Provedor de dados Organic Eprints (1) Autor Li, Fucui (1) Li, Xiaoxi (1) Olesen, Jørgen E. (1) Petersen, Søren O. (1) Sørensen, Peter (1) Palavra-chave Pasture and forage crops Cereals (1) Pulses and oilseeds Nutrient turnover Farm nutrient management (1) Tipo do documento Journal paper (1) Ano 2015 (1) País Germany (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Quantifying biological nitrogen fixation of different catch crops, and residual effects of roots and tops on nitrogen uptake in barley using in-situ 15N labelling Organic Eprints Li, Xiaoxi; Sørensen, Peter; Li, Fucui; Petersen, Søren O.; Olesen, Jørgen E.. Background and aims Contributions of legume-based catch crops (LBCCs) to succeeding cereals may be significant. We quantified biological N fixation (BNF) and residual N effects of contrasting CC tops and roots. Methods BNF of three LBCCs (red clover, winter vetch, perennial ryegrass-red clover mixture) was quantified in microplots by 15N labelling. Their residual effects on spring barley were tested against two non-LBCCs (perennial ryegrass, fodder radish) after spring incorporation of CC tops or roots in monoliths. Results Total N accumulated in LBCCs was 153–226 kg N ha−1, of which 62–66 % was derived from BNF in tops and 31–46 % in macro-roots (0–18 cm soil). Macro-roots represented 31–50 % of total plant N. LBCCs showed similar capacity for... Tipo: Journal paper Palavras-chave: Pasture and forage crops Cereals; Pulses and oilseeds Nutrient turnover Farm nutrient management. Ano: 2015 URL: http://orgprints.org/30110/1/LXX2-2015%20PLSO%20vol%20395%20p273%E2%80%93287.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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