Acessibilidade / Reportar erro

Performance of native pasture and pasture sodseeded with winter species with or without glyphosate

The experiment was developed in Bagé-RS, Brazil, to evaluate the dry matter production (DM), stocking rate (kg LW ha-1), live weight gain per animal (ADG, kg head-1 day-1) and gain per area (GPA, kg LW ha-1) in: T1-native pasture (control); T2-native pasture sodseeded with Italian ryegrass (Lolium multiflorum), white clover (Trifolium repens) and birdsfoot trefoil (Lotus corniculatus); T3-similar to anterior, plus glyphosate spraying; T4-similar to anterior, but with double fertilization. It were utilized Braford steers. The grazing method was the continuous stocking, with stocking adjustments to maintain a level of forage on offer of 10% (10kg of DM 100kg LW-1 day-1). To determine the DM of pasture, it was utilized the double sample method with a disc meter and the cage method for the pasture accumulation rate. The experimental design was a complete randomized blocks, with two blocks and four treatments. The introduction of cool season species in native pasture, with or without glyphosate spraying, contributes to increase native pasture productivity. Over-seeding cool season species allowed a higher stocking rate and animal production per animal and per area as compared to natural pasture.

average daily gain; gain per area; native pasture; sodseeding; herbicide


Universidade Federal de Santa Maria Universidade Federal de Santa Maria, Centro de Ciências Rurais , 97105-900 Santa Maria RS Brazil , Tel.: +55 55 3220-8698 , Fax: +55 55 3220-8695 - Santa Maria - RS - Brazil
E-mail: cienciarural@mail.ufsm.br