Department of Plant Pathology, CCS, Haryana Agricultural University, Hisar (Haryana)
National Symposium on “Plant Pathology in the Changing Global Scenario” held at National Bureau of Plant Genetic Resources, New Delhi on February 27–28, 2009
During survey ten different weed fungi were found commonly associated with the mushroom. Out of this five different fungi were chosen which were found most prevalent and caused maximum damage to the crop. Four fungitoxicants were used viz. bavistin, formalin, Dithane-M 45 and Hexacap and four different Plant materials namely, neem leaves, eucalyptus leaves, Water hyacinth and bioneem an aqueous formulation of neem were used to control these fungi both in virto and in vivo. In vitro studies indicated that Hexacap at 200 ppm was highly toxic to all the fungi followed by bavistin, formalin and Dithane M-45. Bavistin and Dithane M-45 at all conc. could not check the growth of Rhizopus stolonifer, in vitro. Under mushroom house conditions Formalin at 500 ppm gave the highest biological efficiency of Pleurotus sajor-caju. In case of plant materials water hyacinth was found instrumental against all the weed fungi followed by Eucalyptus leaves. However, neem leaves and bioneem were effective against all the weed fungi except Sclerotium rolfsii. Bioneem obtained the highest biological efficiency of Pleurotus sajor-caju with T. harzianum. Formalin and Water hyacinth delayed the spawn run and delayed the primordial formation.
