Decomposição da aveia preta (avena strigosa schreb.) manejada com rolo faca e triturador de palhas.

Abstract

The experiment was conducted at the Fazenda Experimental Lageado, Botucatu-SP, comparing two vegetation management implements, the strawgrinder and the cutting roller, on black oats (Avena strigosa Schreb.). Dry mass of the oats on the date management and 75 days latter, percentage soil cover on the management date and then 32 and 75 days, as well as percentage soil cover by weed at 75 days after management, were evaluated. The experiment was carried out in a completely randomized blocks design, with 16 replications. The results showed that management of the black oats crop with cutting roller sustained greater soil cover and residue mass until the last evaluation. It also reduced the percentage soil cover by weed, in comparison with strawgrinder management.