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This study aimed to evaluate the effect of the application of biochar in soil physical properties. The experiment was arranged in a randomized block design with 6 treatments: 1-without biochar (control); 2-biochar coconut; 3-sludge biochar; 4-biochar coconut + sludge (1:1); 5sludge biochar + raw sludge (1:1); 6-biochar + coconut raw sludge (1:1). The amount of biochar was applied 30 t.ha -1 , with 4 repetitions, and a total of 24 plots. The plots consisted of crop lines with areas of 1.05 m 2doi:10.7127/rbai.v11n200611 fatcat:idpoabut3nhudkomoxfbrtel3y