Thủy phân phụ phẩm cá tra bằng vi khuẩn bacillus subtilis làm phân bón cho cây hẹ

Abstract

The research mainly aimed to examine the use of Bacillus subtilis probiotics to hydrolyze Pangasius catfish (Pangasius hypophthalmus) by-products as a biofertilizer for producing organic and safe vegetables. The results showed that the optimal ratio of supplement ingredients of 1.14% Bacillus subtilis probiotics, pH 5.7, and salt 9.5% created the highest hydrolysis of 55.63g/kg. In addition, the initial step of producing fertilizers which was mixing 25% hydrolyzed solution in combination with 75% of fillers (75% peat taken from the locality with 25% of pond bottom mud).