Produção de mudas de Algodãozinho-do-Campo (Cochlospermumregium (Mart. Et Schr.) Pilger.), em diferentes substratos

Abstract

Cotton-do-cerrado [Cochlospermum regium (Mart. e Schr.) Pilg] which belongs to the botanical family Cochlospermaceae, is a native species from Brazilian Cerrado. It stands out for its medicinal potential whose gathering vegetable resources for this purpose makes it vulnerable. For this reason, more research is needed to verify the effect of different substrates in the C. regium seedling’s development. Two kinds of containers were used: polyethylene bags with 10 cm diameter and 25 cm height and tubes capable of 110 cm3, 3.5 cm diameter of the nozzle (inside), 14.5cm high and 8 edges. As a control, the commercial substratum Vivatto Plus® mixed with 10% vermiculite was used. Eight compositions of substrates were tested: vermiculite + soil + carbonized rice husk (V + SO + CRH 1:1:1; v:v and, 2:1:1; v:v:v); vermiculite + soil + poultry litter (V+ SO + PL 1:1:1; v:v and, 2:1:1; v:v:v); sand + soil + carbonized rice husk (S + SO + CRH 1:1:1; v:v and, 2:1:1; v:v:v) sand + soil + poultry litter (S + S+ PL 1:1:1; v:v and, 2:1:1; v:v:v). Results allow concluding cotton-do-cerrado seedlings reached 10 cm high, 6 mm diameter stem and, 8 leaves at 120 days after sowing. Substrates basis of sand, carbonized rice husk and, poultry litter are suitable of C. regium seedlings.