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| 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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| Assmann,Joice Mari; Martins,Amanda Posselt; Anghinoni,Ibanor; Costa,Sergio Ely Valadão Gigante de Andrade; Franzluebbers,Alan Joseph; Carvalho,Paulo César de Faccio; Silva,Francine Damian da; Costa,Álvaro Araujo. |
| ABSTRACT Under integrated crop-livestock production systems (ICLS), plant and animal residues are important nutrient stocks for plant growth. Grazing management, by affecting the numbers of both plants and animals and the quality of residues, will influence nutrient release rates. The objective of this study was to evaluate the impact of grazing intensity on Ca and Mg release from pasture, dung, and soybean residues in a long-term no-till integrated soybean-cattle system. The experiment was established in May 2001 in a Latossolo Vermelho Distroférrico (Rhodic Hapludox). Treatments were a gradient of grazing intensity, determined by managing a black oat + Italian ryegrass pasture at 10, 20, 30, and 40 cm grazing height and no-grazing (NG), followed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mixed pasture; Animal residue; Half-life time; Nutrient cycling. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100512 |
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