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<p>In a flat lot of 4 ha, with dry warm climate and Mollisols were determined the bulk density, pH and content of sand, silt, clay, organic matter, Ca, Mg, K and P, in the first 150mm of soil, doing a sampling in a semi-regular grid with cell size of 25 x 25m. A factorial analysis was reduced the number of variables to two (factors). The contents of clay, Ca and Mg shaped the first factor, and the second the pH and the contents of organic matter and phosphorus. To each factor and theirdoi:10.15446/rbct.n39.40587 fatcat:lya3tyz6hfflbkv7nheag2haki