Published in Scientific Papers. Series B, Horticulture, Vol. LXVIII, Issue 1
Written by Bilyana GRIGOROVA-PESHEVA, Boyka MALCHEVA, Asen PESHEVA
The present study aimed to follow the change in the microbial community of finished compost after application of different additives. Six variants and one control (C) were prepared: V1 - lavender extract, V2 - thyme extract, V3 - basil extract, V4 - mix, V5 - microbial fertilizer, V6 - mineral fertilizer, V7 - mineral + microbial fertilizer. Initial sampling was performed, as well as sampling at days 5, 10, and 15. In V2 V5, V6 and V7, the microbial biota increases with time. On the fifth day, the amounts of microorganisms were highest in the samples with added organic aqueous extracts. On the tenth day, the V7 has the highest microbial abundance. On the fifteenth day, the microbial abundance of V5 is again the lowest. The highest number of microorganisms has V7. The data showed that the water-based organic extracts slightly increased the amount of the microbial community compared to the control. The pure microbial additive has a suppressive effect on the compost microflora, but combined with a mineral additive gives good results and can be used for improvement of compost parameters.
[Read full article] [Citation]
