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Black oats (Avena strigosa Schreb) solubilize rock phosphate and provide phosphorus to the successive crop, grapevine (Vitis labrusca L. "Red Niagara"). Repositório Alice
MELO, G. W. B. de; MORAIS NETO, J. A.; BORBA, D. R.; IWAMOTO, H.; OZELAME, K. P. C.; VIEIRA, J. L.; ZALAMENA, J.; NASCIMENTO JUNIOR, A..
In grape production, cover crops play a key role in soil protection and nutrient cycling. Thus, since grapevine requirements for P are low, adequate management of cover crops may provide sufficient P for growth. This paper evaluates the effect of black oats, as a cover plant, on the P solubilization in rock phosphate and its availability to the vine cultivated in succession. To test this hypothesis, we evaluated the plants growth parameters and P uptake in grapevines grown in succession to black oats in pots in a greenhouse experiment. The results showed that the soil sterilization decreased P availability to black oats, but not to grapevine. The soil fertilization with rock phosphate increased the P accumulation in oat and grapevine plants, although no...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cover crop; Avena strigose; Successive cropping; Vitis Labrusca; Rock phosphate.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103346
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Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities PAB
Assmann,Joice Mari; Anghinoni,Ibanor; Martins,Amanda Posselt; Costa,Sérgio Ely Valadão Gigante de Andrade; Kunrath,Taise Robinson; Bayer,Cimélio; Carvalho,Paulo Cesar de Faccio; Franzluebbers,Alan Joseph.
Abstract:The objective of this work was to evaluate the effect of grazing intensity on the decomposition of cover crop pasture, dung, and soybean residues, as well as the C and N release rates from these residues in a long-term integrated soybean-beef cattle system under no-tillage. The experiment was initiated in 2001, with soybean cultivated in summer and black oat + Italian ryegrass in winter. The treatments consisted of four sward heights (10, 20, 30, and 40 cm), plus an ungrazed area, as the control. In 2009-2011, residues from pasture, dung, and soybean stems and leaves were placed in nylon-mesh litter bags and allowed to decompose for up to 258 days. With increasing grazing intensity, residual dry matter of the pasture decreased and that of dung...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avena strigose; Glycine max; Lolium multiflorum; Integrated crop-livestock; Nutrient cycling; Soil organic matter..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001000967
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