Effects of pH and ECW on Growth and Sporulation of Indigenous Tricoderma spp.

Hamdia Z. Ali, Hadi M. Aboud, Naeem S. Dheyab, Nibal K. Musa, Fatimah H. Gasam


The influence of three levels of pH and degrees of ECw on the radial growth and sporulation of 34 local isolates of Trichoderma spp. were evaluated under laboratory conditions. The pH used were 4, 6 and 8 while, the ECw were 12.92, 14.30 and 17.8 Siemens per meter (ds/m) respectively. The data obtained showed that pH 6 was the optimum degree of growth parameters while pH 8 showed significant reduction (p< 0.05) in the growth parameters compared to pH 4. The results also revealed that ECw 17.8 ds/m significantly reduced (p< 0.05) the growth parameters compared to ECw 12.92 and 14.30 ds/m. Thus, the results obtained elucidated the importance of reduction in biocontrol activity of fungus in saline-alkali soil.


Saline-alkali soil; pH alkaline; Electrical conductivity; E.C.; Trichoderma isolates


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DOI: 10.33687/phytopath.004.01.0966


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