The aim of this study was to evaluate the effect of cultivation systems and nitrogen fertilization on the dry mass yield and botanical composition of Brachiaria brizantha cv. Xaraés and Stylosanthes cv. Campo Grande in the four seasons of the year. The experiment took place in an area previously established with Xaraés grass, where Stylosanthes cv. Campo Grande was introduced. Yield traits were evaluated in a 3 × 2 factorial arrangement corresponding three cultivation systems (Xaraés monocrop, Stylosanthes monocrop and an intercrop between the two species), with or without nitrogen fertilization (75 kg N/ha), with four replicates. Nitrogen fertilization did not affect the yield traits of the evaluated cultivation systems. In the winter, the Xaraés monocrop and the intercrop showed the highest total dry mass yields. The highest yield in the spring was obtained with the intercrop; in the summer, with the Stylosanthes monocrop. In the fall and in the entire year, the cultivation systems did not differ for total dry mass yield. The intercrop between Xaraés grass and Stylosanthes is recommended, as it exhibits satisfactory dry mass yield besides reducing dependence on the use of chemical fertilizers and contributing to the conservation of natural resources.

中文翻译：

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间作和施氮对菊苣生产特性的影响。大坎普市和Xaraés草

这项研究的目的是评估栽培系统和氮肥对Brachiaria brizantha cv的干物质产量和植物组成的影响。Xaraés和Stylosanthes简历。坎普格兰德在一年中的四个季节。实验是在以前用Xaraés草建立的地区，即Stylosanthes cv。介绍了大坎普市。以3×2因子安排评估相应的三种栽培系统的产量性状（Xaraésmonocrop，Stylosanthes单作和两种间作），有或没有氮肥（75 kg N / ha），重复四次。施氮不影响所评估栽培系统的产量特征。在冬季，Xaraés单作和间作显示出最高的总干物质产量。间作法在春季获得了最高的产量。在夏天，用Stylosanthes单季作物。在秋季和全年，栽培系统的总干物质产量无差异。推荐使用Xaraés草和Stylosanthes之间的间作，因为它表现出令人满意的干物质单产，除了减少了对化肥的依赖并有助于保护自然资源。