INFLUENCE OF Pterodon emarginatus Vogel ON PHYSICAL AND CHEMICAL ATTRIBUTES OF THE GROUND AND NUTRITIONAL VALUE OF Brachiaria decumbens Stapf IN SILVIPASTORAL SYSTEM

被引：9

作者：

Pezzoni, Thobias ^{[1
]}

Tadeu Vitorino, Antonio Carlos ^{[1
]}

Daniel, Omar ^{[1
]}

Lempp, Beatriz ^{[1
]}

机构：

[1] Fundacao Univ Fed Grande Dourados, Fac Ciencias Agr, BR-32279825 Dourados, MS, Brazil

来源：

CERNE | 2012年 / 18卷 / 02期

关键词：

Agroforestry systems; sustainability; trees in pastures; TREES;

D O I：

10.1590/S0104-77602012000200014

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Sustainable cattle beef production has been associated with woody trees species in grassland area. This study aimed to evaluate the influence of Sucupira Branca trees (Pterodon emarginatus) in physical and chemical properties of soil and on the quality of forage in Silvipastoral Systems. The study was carried out in Nioaque-MS, Brazil. In areas occupied with grassland of Brachiaria decumbens, predominantly shaded by trees of Sucupira Branca, five adult trees had been chosen, in the surroundings of which were drawn six transects leased to angles of 60 degrees between each other At intervals of five meters along these transects were centralized sampling plots 30 m away collecting samples from around litter grass and soil. Forage was analyzed for crude protein (CP), neutral detergent,fiber (NDF) and in vitro dry matter digestibility (IVDMD). For the soil the studied attributes were: bulk density macroporosity, microporosity, total porosity penetration resistance, levels of exchangeable magnesium and potassium. The data were analyzed by simple regressions and correlation. It was concluded that: the organic material in the litter affects positively the physical attributes of soil, improving structural quality: and the presence of trees affects the nutritional value of grass, allowing increased levels of CP and NDF and reducing IVDMD.

引用

页码：293 / 301

页数：9