USING BLACK SOLDIER FLY (Hermetia illucens) LARVAE TO TREAT ORGANIC WASTE INTO FERTILIZER FOR PLANTS

Abstract

With the aim of turning waste into useful products and minimizing environmental pollution, using Black Soldier Fly (Hermetia illucens) larvae to treat organic waste into fertilizer carried out in Son Duong district, Tuyen Quang province is a feasible solution. The experiment was arranged with five formulas corresponding to five types of untreated organic waste. The volume and quality of the obtained product depend on the type of waste being treated. Larvae reared on vegetable, tuber, fruit and bean residues have a larger mass, protein, lipid, calcium and energy content than larvae fed with cassava residue and dung of buffaloes, cows, chickens and ducks. In contrast, the volume of organic fertilizer obtained from eating manure of buffaloes, cows and chickens was higher than the remaining materials. On the background of cassava residue, larvae have the smallest weight and are the poorest in nutrients. Organic fertilizer pellets from Black Soldier Flies contain all the essential nutrients for plants such as N, humus, P₂O₅ and K₂O. However, in order to ensure Vietnam's standards on the quality of organic fertilizers for plants, raw materials after treatment from vegetables, tubers, fruits, bean residues, and cassava residues need to be properly supplemented with nutrients.