2017-11-142017-11-141999PASQUALETTO, Antônio; COSTA, Liovando Marciano da; SILVA, Antônio Alberto da; SEDIYAMA, Carlos Sigueyuki. Influência de culturas de safrinhas em sucessão à cultura do milho (Zea mays l.) no sistema plantio direto sobre a resistência à penetração do solo. Pesquisa Agropecuária Tropical, Goiânia, v. 29, n. 2, p. 27-31, jul./dez. 1999. Disponível em: <https://www.revistas.ufg.br/pat/article/view/2837/2887>.http://repositorio.bc.ufg.br/handle/ri/12842The objective ofthis paper to evaluate the resistance to soil penetration in an area with six successions of cultures, involving the double cropping cultures and com, in no-tillage management, carried out for three years in Rio Verde, Goiã.s. The experiment was conducted in 1995. The used do...ible croppings were: com {Zea mays L.), soy (GJycine max L.), suntlower (Helianthus annus L.), pearl millet (Pennisetum typhoides), sorghum (Sorghum vulgare Pers) and guandu (Cajanus indicus Spreng). The succession of each double cropping with the culture of com constituted the treatments, in a total of six, which composed the portions, disposed in independent gleeful, while the depths in the soil of7,5, 15,0, 22,5 and 30,0 cm constituted the sub-portions. A significant interaction was observed between successions of cultures and depths in the profile ofthe soils. Statistical differences were not observed. As far as depth to 30 cm is concemed, there was a significant reduction ofthe resistance to the penetration of soil, even more evident when sorghum and pearl millet were cultivated as double cropping cultures.porAcesso AbertoFísica do soloSolos do cerradoPenetrometriaPhysics ofthe soilSoils of cerradoPengArtigo1517-6398