Effects of early compost application on no-till organic soybean

Planta Daninha

Khatounian, C.A.¹  USP, Piracicaba¹  Penha, L.A.O.¹  Universidade Estadual de Londrina, Londrina¹  Fonseca, I.C.B¹  Instituto Agronômico do Paraná, Londrina¹ 

关键词: Euphorbia heterophylla;    oats;    Avena spp.;    weed;    cover crop;    manure.;   

DOI  :  10.1590/S0100-83582012000100001

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

Weed control has always been an important issue in agriculture. With the advent of no-till systems, soil erosion was reduced but herbicide use was increased. Organic no-till systems try to adjust reduced erosion to the no use of herbicides. Nevertheless, this adjustment is limited by the cost of mechanical weed control. This cost may be reduced by improved cultural weed control with cover crops mulches. In this paper we report a study on the application of compost manure on an oats winter cover crop, preceding soybean, instead of on the soybean summer crop. Treatments comprised a control without compost manure, and compost manure doses of 4 and 8 Mg ha-1 applied either on oats in winter or soybean in summer, organized in a randomized block design, with five replications. In summer, plots were split into weed-controlled or not controlled subplots. The timing of application and the manure doses did not affect the oats biomass or the soybean performance. However, in summer, without water stress, the application of manure at 8 Mg ha-1 directly on soybean has reduced weed biomass in this crop.

【 授权许可】

Unknown