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ThesisItem Open Access Studies on certain chemical constituents of banana leaves in relation to incidence of leaf spot diseases. A note on the fungi occurring on banana(Division of Plant Pathology ,Agricultural College and Research Institute ,Vellayani, Trivandrum, 1966) Chandrasekharan Nair, M K; KAU; Sam Raj, JThesisItem Open Access Studies on the helminthosporium Disease of rice detection of mycelium of the fungus in different tissues of the seed obervations on a saltant of Helminthosporium oryzae.(Division of plant Pathology ,Agricultural College and Research Institute ,Vellayani, Trivandrum, 1965) Krishnan Kutty Nair, M R; KAU; Sam Raj, JThesisItem Open Access Morphological & Physiological studies on Helminthosporium halodes Drechs. The 'Leaf Rot' fungus of coconut(Division of Plant Pathology, Agricultural College and Research Institute, Vellayani, 1963) Shanmughom, S N; KAU; Samraj, JThe strain of Helminthosporium halodes occuring in Kerala and causing leaf rot disease of the coconut palm was found to differ in certain respects from the type species and also from its known varieties. The dimmensions of the spores of this were far superior to that of others which were reported as H.halodes or as its varieties. The difference were very prominent in culture. Formation of secondary spores on definite secondary sporophores, proliferated from the primary spores occurs only in the coconut strain not in the type species or its varieties . The fungus is therefore considered as a new variety of H.halodes var nucifera var. nov.ThesisItem Open Access Observations on rhizosphere microflora in the different regions of banana roots as influenced by infection of the plant by the bunchy - top virus(Division of Plant Pathology, Agricultural College & Research Institute, Vellayani, 1965) Ranganathan, K; KAU; Sam Raj, JThesisItem Open Access Studies on the Rhizosphere microflora of tomato and translocation of streptomycin in the plant(Division of Plant Pathology, Agricultural College & Research Institute, Vellayani, 1964) Rema Devi, L; KAU; Sem Raj, JThesisItem Open Access Studies on Corynespora cassiicola (Berk. & curt) W E I.(Division of Plant Pathology, Agricultural College & Research Institute, Vellayani, 1963) Gopalan, N; KAU; Sam Raj, J