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FRITSCH, Luiz Fernando de Andrade; CARVALHO, Marco Antonio Camillo de; DALLACORT, Rivanildo  and  SANTOS, Cristiano. Soil preparation and forage sowing time for crop-livestock integration in corn culture. Bragantia [online]. 2012, vol.71, n.3, pp.424-429.  Epub Nov 06, 2012. ISSN 0006-8705.

This work was carried out during the 2008/2009 crop season, in an Oxisol. It was used a split-plot arrangement design, with each plot corresponding to a different soil preparation system and each split-plot corresponding to a different sowing time of the forage Brachiaria brizantha Stapf. The soil preparation systems were: heavy harrowing (HH), disk plough (DP), chisel plough (CP) and no-till (NT), and the forage sowing times were: 0, 8, 16 and 25 days after sowing (DAS) of corn, arranged in 16 treatments with 3 replicates. The productive and vegetative characteristics of the corn were evaluated. Soil preparations have influenced plant height and the first ear height, with the highest value found for the heavy harrow treatment. Forage sowing time had no influence on vegetative characteristics of the corn and productive characteristics were not influenced by the soil preparations. The forage sowing time had influence on corn productivity, causing decrease in competition with corn forage from 5 DAS. The productivity was highly correlated with the number of grains per ear.

Keywords : Zea mays L.; Brachiaria brizantha Stapf. cv Piata; intercropping; ploughing.

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