Case Study of Zero-Tillage Organic Soybean Production in Brazil
Soil research(2016)
Abstract
In the absence of the herbicide option, weed control is the major constraint to organic soybean production in southern Brazil and eastern Paraguay. A joint entrepreneurial initiative introduced innovative 6000-V electro-shock desiccation for pre-plant weed control in organic soybeans, under zero-tillage–conservation agriculture, complemented by already-proven inter-row cultivation and biological control methods for insects and diseases. To develop an efficient operating procedure, a field trial with the electro-shock treatment was carried out and showed 78.6% overall weed control 28 days after electro-shock treatment, and no significant difference between operating speeds of 3.42, 9.49 and 16.57 km h−1. Further research is required to improve equipment performance and prove the medium- and long-term economic and social benefits to policy-makers, in order to justify environmental services payments for this environmentally friendly system.
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Key words
biological control,cover crop,electro-shock,ground-driven horizontal disc,weed control
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