Soybean yield in grain production systems with annual winter pasture and perennial pasture under no-tillage
Abstract
lt has been shown that ley farming is technically and economical viable. For such end, medium - and long - temi production systems integrating grain production with perennial should be indentified. The objective of this five-year study was to assess the soybean performance after pastures. Five production systems were eva'luated: system 1 (wheat/soybean, white oat/soybean, and common vetch/corn); system II (wheat/soybean, white oat/ soybean, and oat + grazed common vetch pasture/corn); system III [perennial cool season pastures (fescue + white clover + red clover + birdsfoot trefoil)]; and system IV [perennial warm season pastures (bahiagrass + black oat + ryegrass + white clover + red clover + birdsfoot frei -0H)); and system V (alfalfa as hay crop). The plot under systems III, IV, and V retumed to system I after the summer of 1996. The treatments were allocated in a complete randomized block design, with four replications. In the overall year mcan thc lowest soybean grain yield was obtained in system III, independently of the previous crop (white oat and/or wheat). Soybean grain yield was similar in the remaining ley forming proction systems. No difference was found among the systems under for the remaining agronomic traits of soybean.
Downloads
The authors declare that the work has not been previously published, nor sent simultaneously for publication in another journal and that they agree with the submission, content and transfer of the publication rights of the article in question to the scientific journal Pesquisa Agropecuária Gaúcha - PAG. The authors assume full responsibility for the originality of the article, and may incur on them any charges arising from claims by third parties in relation to the authorship of the article. The full reproduction of the journal's articles in other free-to-use electronic media is permitted under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.