Prevalence of Trichoderma spp. in the rice rhizosphere from the IRRI upland area
1984
Usmani, S.M.H. | Mew, T.W. (International Rice Research Inst., Los Banos, Laguna (Philippines))
Five Trichoderma spp. viz. T. aureoviride, T. hamatum, T. harzianum, T. koningii and Trichoderma sp. were found prevalent in the rhizosphere of the rice variety IR36 from the IRRI upland rice area. Seeds of the rice var. were treated with PCNB (1.4 g ai/kg seeds) or non-treated check and sown in completely randomized plots. Population of Trichoderma spp. was determined by dilution plate method on semiselective modified gallic acid medium at 0, 2 was found more prevalent followed by Trichoderma sp., T. aureoviride, T. koningii and T. hamatum. In the rhizosphere of untreated control seeds, the population of T. aureobiride was higher at 0 days with a fall after 1 week. No. T. hamatum was observed in the rhizosphere soil of untreated check. Trichoderma aureoviride is reported here for the first time from soil of tropical hot climate
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