Ecology and biological control of Fusarium udum in relation to soil fungistasis of antagonistic microorganisms
1992
Upadhyay, R.S. (Banaras Hindu Univ., Varanasi 211005 (India). Centre for Advanced Study in Botany)
Ecology of Fusarium udum was studied in relation to fungistasis of antagonistic microorganisms of the root region of pigeon-pea for biological control of its wilt disease. The microorganisms were screened for their antagonistic potential and were used for elevating the level of fungistasis of soil against the pathogen. Bacillus subtilis, Cephalosporium roseo-griseum and Trichoderma harzianum were found to be highly effective for suppressing the population of F. udum in soil as well as in the root region of pigeon-pea. This was correlated with the elevated level of soil fungistasis due to these microorganisms. Other microorganisms - Cladiosporium cladosporioides, Aspergillus fumigatus, Papulaspora sp. and Penicillium decumbers - also possessed strong fungistatic effects against F. udum but failed to exhibit a significant effect on the population of F. udum and on wilt incidence
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