The effect of complex composts on the growth and dynamics of the number of vermiculture Esenia Fetida

Abstract

The article considers the complex composts role from the wastewater residues and beer pellets on the Esenia fetida vermiculture growth dynamics in closed ground conditions as the Yugra territory sustainable development regional aspect. The substrates used: the soil with a total humus content of 1.83 ± 0.51%, the wastewater residues, the brewer pellet, the plants, the food waste, the paper, the bird droppings, the Tamir microbiological preparation, as well as 50 immature worms, the hybrid Prospector. The experiment lasted 30 days. In each compost variant, there were 7 replicates with the MP and worms, as well as 2 controls without worms: with MP and without it. The complex composts showed a positive trend in the increase in the earthworms number and their total mass. The decrease in the substrate mass after vermicomposting using the Tamir microbiological preparation was observed in all variants. A statistically regular decrease in the substrate mass over time due to the growth of the worms was found. The optimum temperature for the worm’s development is +21 degrees, and the pH values at which a high worms number were observed are in the range from 7.8 to 8.2. Thus, it is possible to use all the complex composts variants. The decomposition process and the growth of the worms positive dynamics were observed everywhere at different rates. The beer pellets use in the raw state is possible when adding 10-25% of the compostable substrate total mass with the organic components that have sorption capacity.