This work aimed to evaluate some physical attributes and their correlation with production of soybean (Glycine max) and rice (Oryza sativa) in three levels of soil compaction and two water contents (tension of 0.01 and 0.05MPa), with three replications. Samples of a Haplustox and a Eutrustox were collected at 0-20cm depth and compacted in layers of 3cm in pots of 9.82L. The total porosity, macro and microporosity, bulk density, penetration resistance and soybean and rice grain production were evaluated. The physical attributes presented high and significant correlations among them for all soils na water contents. The greater correlations of physical attributes with soybean and rice grain production were obtained in Haplustox at water content at 0.05MPa, condition where greater reduction of grains production with increase of compaction occurred. The correlations of macroporosity and total porosity with grain production of both crops were positive, while microporosity, bulk density and penetration resistance correlations were negative.
soil compaction; water content; Glycine max; Oryza sativa
