Effect of Various Organic Substrates on the Mass Multiplication of Trichoderma viride
Four different organic substrates, viz., decomposed coir pith, dried cow dung, rice bran and tea waste, were tested tor the growth of Trichoderma viride (isolate t). The population (CFU) of T. viride on various substrates was estimated at 20th, 30th, 40th and 60th day after inoculation by serial dilution plate technique. The population of T. viride was highest on 20th day in sterilized tea waste (236.30 × 106 cfu), followed by rice bran (152 × 106 cfu), decomposed coir pith (44.35 × 106 cfu), talc (36 × 106 cfu) and dried cow dung (20 × 106 cfu). Sterilized substrate was favourable for the multiplication of T. viride except for dried cow dung. The population increased in all the substrates except talc on 30th day and declined from 40th day onwards.
Colony Forming Unit (CFU), Organic Substrates, Talc, Trichoderma viride (Isolate 1).
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