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DISEASES OF SORGHUM DISEASES CAUSAL ORGANISM Charcoal rot Macrophomina phaseolina Downy mildew / leaf shredding Perenosclerospora sorghi Rust Puccinia purpurea Grain smut / kernal smut / covered smut Sporisorium sorghi Loose smut Sporisorium cruenta Long smut Tolyposporium ehrenbergii Head smut Sporisorium reiliana Ergot / sugary disease Claviceps sorghi Leaf blight Helminthosporium turcicum Rectangular leaf spot […]
PESTS ON COTTONCotton Aphid, Aphis gossypii (Aphididae : Hemiptera) World wide, potential pest – Highly polyphagous, wider host range Nymphs and adults desap on young crop in colonies. Tender leaves curl up, reduced in size, gradually fade and dry up. Plant growth severely shunted. Leaves show oily appearance Sooty mould develops on honey dew on […]
BANANA Rhizome weevil Cosmopolites sordidus (Curculionidae: Coleoptera) It is a major pest of banana. Adult is a stout, reddish brown weevil. Grub is apodous and yellowish with reddish head. Grub bores into rhizome and tunnels within it. Pupates within a chamber made near the outer surface of rhizome. Adult also tunnels within stem feeding on […]
Wheat (Triticum aestivum L.) is an important cereal crop cultivated all over the world and consumed by nearly 35% of the world population. It harbours nearly two dozen of insects; among them only half a dozen of insect pests, like aphids, termites, army worm, pink stem borer, pod borer and Ghujhia weevil, attain the major pest […]
PEST – Derived from French word ‘Peste’ and Latin term ‘Pestis’ meaning plague or contagious disease Pest is any animal which is noxious, destructive or troublesome to man or his interests A pest is any organism which occurs in large numbers and conflict with man’s welfare, convenience and profit A pest is an organism which […]