Studies regarding the fertilizing capacity of poultry manure biocomposted by fly larvae (Diptera: Stratiomyidae)

The aim of the research conducted in this paper is to test the possibility of utilizing poultry manure biocomposted by Hermetia illucens L. fly larvae as an organic fertilizer. Microclimate conditions necessary for a normal biological cycle of the species were ensured for obtaining the larvae. Flies were obtained from initial pupae, which, after mating, oviposited directly on the laying hen manure substrate, where the larvae hatched and started the substrate processing. Larval processing and pupal migration took place in 37 days, resulting in insect biomass and biocompost. Larval biocomposted manure from laying hens was used for testing its fertilizing ability. Three proportions of soil incorporation for manure were formulated for capsicum growth and development. Three experimental lots were established: M (without organic fertilized soil), L1 (soil with 10% biocompost) and L2 (soil with 15% organic fertilizer). The capsicum seeds were initially set to germinate, following with the planting in the growth substrate specific to each established lot. To determine the plant growth evolution, measurements were taken every three days and gross values for statistical processing and comparison were recorded. The experiment results show that the plants from the soil with 10% biocompost inclusion had the best growth in the observed period (21 days). In conclusion, the fly larvae (Diptera) provide an efficient solution in poultry manure management. Their ability to digest and retain nutrients convert poultry manure in larval biomass and into an ideal fertilizer for agricultural lands