Yasser A. El-Tahlawy( 2018). Biological And Chemical Characterization Of Compost Tea Based On Compost Particle SizeN. Egypt. J. Microbiol. Vol. 50, May, 2018
Abstract: Compost teas are preparations produced by steeping a wide range of composts into water and brewed with or without adjuvants for microbial nutrition and/or plant health reasons. This study was performed with the intent of evaluating the compost teas produced from three different composts, namely: rice straw, cotton stalk or bagasse composts, after dry fractionation based on the particle sizes associated within each compost type. Twelve aerated compost teas, with compost to water ratio of 1:10 (w:v), were prepared using four fractions of each compost. The prepared teas were analyzed for their agro-biological and agro-chemical parameters. The results indicated that prepared compost teas properties were depended on the compost type as well as their fractions. The finest fractions, produced compost teas, recorded lower values of pH, electrical conductivity, and total soluble nitrogen than that of raw compost. On the other hand, soluble carbon, E4/E6 ratio, microbial activities, indolic compounds and germination index revealed higher values in the fine fractions than teas prepared from raw composts. More research is recommended on the dry fractionation based on the size of particle and their characteristics for produce compost teas with various specifications.
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