Microbial characterisation of vermicompost and compost of urban waste processed by three earthworm species - Eudrilus eugeniae, Eisenia fetida and Perionyx excavatus

Abstract

Species diversity of bacteria, fungi and actinomyctes of vermicompost and compost of the organic fraction of municipal solid waste, vegetable market waste and flower waste were assessed using pour plate technique. Of the total 91 entities, 62 were bacteria and 29 were actinomycetes in MW, followed by that of MSW and FW, with 59 and 55 bacterial; 25 and 22 actinomycetes entities, respectively. The biodiversity of bacteria and actinomycetes were significantly higher in the vermicomposts produced by Eudrilus eugeniae followed by that of Eisenia fetida and Perionyx excavates and that of composts (p < 0.05). The bacterial count was found to be significantly higher in the substrates compared to the fugal count (p < 0.05). Actinomycetes not found at the beginning appeared at the end of vermicomposting and composting. Actinomycetes count was significantly more than that of fungal and of bacterial count at end of processing (p < 0.05).

Dual-Purpose Vermicompost for the Growth Promotion and Suppression of Damping-Off Disease on Potted Vegetable Soybean

“…In soil-borne plant disease control via soil amendment with vermicompost, antagonistic microbes provided direct suppression in the mycelial growth of fungal pathogens [ 19 , 22 ], relying on interference competition for resources between plant pathogens and antagonistic microbes in vermicompost [ 36 ]. Antagonistic microbes found in AF vermicompost, such as Bacillus spp., Pseudomonas spp., and Streptomyces spp., were more diverse than those in TG vermicompost [ 37 ]. Therefore, AF vermicompost was found to exhibit better suppressive ability than TG vermicompost, as presented in this study ( Figure 1 , Figure 2 and Figure 3 ).…”

“…It implied that amending AF vermicompost to the soil might facilitate the exploitative competition of beneficial microbes in comparison to TG vermicompost. In addition to nutrient content, Pattnaik and Reddy [ 37 ] revealed that AF vermicompost had significantly more species diversity in microbes and biomass, especially actinomycetes, than TG vermicompost. Applying AF vermicompost rather than TG vermicompost via soil amendment might introduce a higher number of beneficial microbes.…”

Effect of Vermicompost Application to Arabica Coffee Seedlings (Coffea arabica L.)

“…This process was correlated to the sufficient of nutrients that was easily absorbed and used by plant particularly in leaves formation [13]. Pattnaik and Reddy [14] stated that the vermicompost application increased the number of leaves due to the nutrient content in vermicompost such as N, P, K and Mg.…”

“…Essential nutrient content and hormone in vermicompost could accelerate leaves formation rate. N in vermicompost was used optimally by plant so that photosynthesis process in leaves increased [14]. The photosynthesis result then was distributed to all parts of plant and it affected the length and width of leaves of plant [24].…”

“…N significantly played role for elongation and widening of leaves [12]. Vermicompost application affected the width of leaves due to vermicompost contained microorganism that could improve soil characteristic so that it supported the medium in providing nutrients that was available to be absorbed by plant root [14]. Vermicompost was nutrition for soil microbes.…”