Biochar from Caryocar brasiliense as a soil conditioner for common bean plants

ABSTRACT: In recent years there has been a growing interest in the use of organic waste agriculture. this way, was aimed with study to evaluate biochar from pequi shell (Caryocar brasiliense Cambess) on soil chemical properties and production nutrition common bean plants. The experiment carried out pots (4 dm3 ~ 5,44 kg), completely randomized experimental design, 4 x 3 + 2 factorial scheme, four replications. treatments were doses (0.0, 2.5, 5.0, 7.5 10.0 % v/v), three different particle size (G1, <0.5 mm; G2, 0.5-1,0 mm G3, 1.0-2.0 mm) two control treatments, one without another addition corrective acidity. acted as acidity source potassium for However, higher decrease plants due nutritional imbalances.