Growth and population dynamics of Catenaria anguillulae in relation to oilcakes.
Singh K. P., Bandyopadhyay P., Vaish S. S., Kumar T. M., Gupta R. C.
Author Affiliation: Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005, India.
Indian Phytopathology 55 : 286-289
Abstract : The radial growth of seven isolates of C. anguillulae was studied on beef extract agar and oilcake agar media. The oilcake agar consisted of linseed, mustard (Brassica juncea), sesamum (Sesamum indicum), neem (Azadirachta indica), and mahua (Madhuca indica [M. longifolia]) cake each at 0.5%. On beef extract agar, I and VII were fast-growing, while isolate VI was slow-growing. The other isolates, viz. isolate II, III, IV, and V, showed moderate growth on beef extract agar medium. All the isolates grew well on oilcake media except on mahua, which did not allow the growth of the fungus. The maximum growth of most of the isolates occurred on mustard or linseed oilcake agar medium, followed by beef extract agar medium. Neem oilcake agar medium supported the minimum growth of the fungus. The effect of mustard, linseed, neem, and sesamum oilcakes on C. anguillulae in soil was studied by amending the soil around the roots of citrus (Citrus aurantiifolia), mango, and chilli (Capsicum annuum) plants. The population of C. anguillulae increased several-fold in soils amended with oilcakes.