Nonstructural carbohydrates total nitrogen and dry matter of roots in signal grass as related to sulphur, nitrogen and lime rates

Authors

  • Rosane Cláudia Rodrigues Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Zootecnia, Pirassununga, SP
  • Herbert Barbosa de Mattos Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Produção Animal, Piracicaba, SP
  • Walcylene Lacerda M. Pereira Universidade Federal de Mato Grosso, Departamento de Solos e Engenharia Rural, Cuiabá, MT
  • José Lavres Júnior Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Centro de Energia Nuclear na Agricultura, Laboratório de Nutrição Mineral de Plantas, Piracicaba, SP
  • Waldssimiler Teixeira de Mattos Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Nutrição Animal e Pastagem, Nova Odessa, SP

Keywords:

Nitrogen fertilizer, sulphur fertilizer, liming, nonstrucutural carbohydrates, pasture recovery

Abstract

Pastures degradation is one of the main hindrances of the brazilian cattle breeding, at the present time. Thus, the objective of this work was to assess the contents of nonstructural carbohydrates, total nitrogen and dry matter yield of roots of Brachiaria decumbens Stapf. growing in a soil from a degraded pasture in relation to sulphur, nitrogen and lime rates. The experiment was carried out in greenhouse during the summer. The experimental treatments steined from a 4x4x3 factorial combination of rates of lime, nitrogen and sulphur, respectively. Nitrogen rates were 0, 180, 630 and 1080 mg dm-3; lime rates were 0, 1.587,6, 3.175,2 and 4.762,8 mg dm-3, whereas sulphur rates were 0, 108 and 216 mg dm-3. The experimental design was a completely randomized design, with three replications. It was observed effect (P<0.05) for the nitrogen rates in all evaluated variables. The behavior was linear and decreasing for the nonstrucutural carbohydrates and quadratic for the total nitrogen concentration and dry matter in the roots of the grass. The sulphur influenced (P<0.05) just the nonstructural carbohydrates concentration that had decreasing linear behavior.

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Published

2013-11-28

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Nonstructural carbohydrates total nitrogen and dry matter of roots in signal grass as related to sulphur, nitrogen and lime rates. (2013). Bulletin of Animal Husbandry, 62(1), 71-78. http://bia.iz.sp.gov.br/index.php/bia/article/view/1313

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