Effects of different soil tillage systems and coverages on soybean crop in the Botucatu Region in Brazil

Autor: Rodrigues, J. G. Lanca [UNESP], Gamero, Carlos Antonio [UNESP], Fernandes, J. Costa [UNESP], Miras-Avalos, J. M.
Přispěvatelé: Univ Coruna UDC, Universidade Estadual Paulista (Unesp)
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Popis: Made available in DSpace on 2013-08-12T19:20:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-03-01 Made available in DSpace on 2013-09-30T17:43:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-03-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:19:27Z No. of bitstreams: 0 Made available in DSpace on 2014-05-20T13:19:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-03-01 Nowadays, agricultural practices should combine high yields with a sustainable use of resources. Different tillage practices and crop covers, if combined, may help to achieve both objectives. In this work, several traits of a soybean (Glycine max L. Merr) cultivar were studied under different conditions of tillage and previous soil coverages. The experiment was installed at Lageado Research Station, Botucatu county, SP, Brazil, on a Paleudult. It consisted of nine treatments (combining three systems of soil tillage and three cover crops) and 4 replicates, yielding 36 plots of a randomized block experimental design. The soil tillage systems considered were: (i) conventional tillage with two heavy harrowing and a levelling harrowing; (ii) chiseling, and (iii) no-tillage with chemical drying of vegetation. The three cover crops used were: black oat, sorghum and spontaneous vegetation. Analyzed variables were: plant height, initial and final plant densities, height of first pod insertion, weight of a thousand grains, number of pods per plant, number of grains per pod, and crop yield. No significant differences were observed for most of the analyzed variables; however, conventional tillage produced significantly heavier grains and a higher number of pods per plant. The selected covers were considered an excellent coverage prior to planting soybean in a crop rotation. The three tillage systems can be used for deployment of culture without compromising the development of soybean. Univ Coruna UDC, Fac Ciencias, La Coruna 15071, Spain Univ Estadual Paulista Julio Mesquita Filho UNESP, Fac Ciencias Agron, Dept Engn Rural, São Paulo, Brazil Univ Estadual Paulista Julio Mesquita Filho UNESP, Fac Ciencias Agron, Dept Engn Rural, São Paulo, Brazil
Databáze: OpenAIRE
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