Soil attributes and common bean yield after five years of different winter soil uses/Atributos de solo e produtividade de feijao apos diferentes formas de uso do solo no inverno, no quinto ano de experimentacao

The objective of this study was to evaluate in the fifth year of experimentation, the effect of winter soil uses on residual straw on the soil, physical and chemical soil attributes and grain yield of common bean cultivated in succession. An experiment was carried out in the North Plateau of Santa C...

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Bibliographic Details
Published inCiência rural Vol. 42; no. 3; p. 401
Main Authors Balbinot, Alvadi Antonio, Jr, da Veiga, Milton, Vogt, Gilcimar Adriano, Spagnollo, Evandro
Format Journal Article
LanguageSpanish
Published Universidade Federal de Santa Maria 01.03.2012
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Summary:The objective of this study was to evaluate in the fifth year of experimentation, the effect of winter soil uses on residual straw on the soil, physical and chemical soil attributes and grain yield of common bean cultivated in succession. An experiment was carried out in the North Plateau of Santa Catarina State, Brazil, from May 2006 to April 2011. Five winter soil uses were investigated: 1) multicropping with black oat + ryegrass + common vetch without grazing (multicropping cover); 2) the same multicropping, with grazing and 100kg [ha.sup.-1] of nitrogen [year.sup.-1], applied during the growing period (pasture with N); 3) the same multicropping, with grazing and without nitrogen fertilization (pasture without N); 4) oil seed radish, without grazing (oil seed radish); and 5) natural vegetation, without grazing (fallow). In the fifth year of experimentation, multicropping cover treatment inputted greater straw on the soil, but it was not observed expressive differences in soil attributes among the five winter soil uses. Cover crops, annual pasture and winter fallow did not affect the grain yield of common bean cultivated in succession. Key words: crop-livestock, no tillage, cover crops, soil compaction. O objetivo deste trabalho foi avaliar, no quinto ano de experimentacao, o efeito de formas de uso do solo no inverno sobre a quantidade de palha remanescente, os atributos fisicos e quimicos do solo e a produtividade de graos de feijao cultivado em sucessao. Foi conduzido um experimento na regiao do Planalto Norte de Santa Catarina, entre maio de 2006 e abril de 2011, no qual foram avaliadas cinco formas de uso do solo no inverno, repetidas por cinco anos nas mesmas parcelas: 1) consorcio de aveia preta + azevem + ervilhaca comum manejado sem pastejo (consorcio cobertura); 2) o mesmo consorcio, com pastejo e com 100kg [ha.sup.-1] de N [ano.sup.-1] em cobertura (pastagem com N); 3) o mesmo consorcio, com pastejo e sem adubacao nitrogenada (pastagem sem N); 4) nabo forrageiro sem pastejo (nabo forrageiro); e 5) pousio sem pastejo (pousio). O consorcio cobertura aportou a maior quantidade de palha para cultivo do feijao em sucessao, mas nao foram observadas diferencas expressivas em atributos de solo entre as formas de uso investigadas. Coberturas de solo, pastagem anual e pousio no inverno nao afetaram a produtividade de graos de feijao cultivado em sucessao. Palavras-chave: integracao lavoura-pecuaria, plantio direto, plantas de cobertura, compactacao do solo.
ISSN:0103-8478