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Browsing Reprints by Author "Abraham, V.A."
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Item Biology of Metanastria hyrtaca Cram., A defoliator of cashew(2007) Radhakrishnan Nair, C.P.; Abraham, V.A.; Pillai, G.B.Item Biology of Udaspes folus Cram.(Lepidoptera: hesperiidae), the leaf roller pest of turmeric and ginger(1975) Abraham, V.A.; Pillai, G.B.; Radhakrishnan Nair, C.P.Biology of. Udaspes flous Cram. the leaf roller pest of turmeric and ginger was studied under laboratory conditions The average duration from egg to adult was 28 -6 days in ginger and 25 -1 • days in turmeric. Longevity of adults was 4 days in males and 6 -7 days in females. The maximum number of eggs laid was 50, The collateral hosts of the pest are also listed.Item Chelisoches moris F. (Forficulidae : Dermaptera), a predator on eggs and early instar grubs of the red palm weevil Rhynchophorus ferrugineus F. (Curculionidae : Coleoptera)(1973) Abraham, V.A.; Chandy KurianRhynchophorus ferrugineus F. is a serious pest of the coconut palm. No effective biological control agent of this pest has been reported so far. Chelisoches moris F., a species of earwig, is commonly met with on the crown of coconut palms infested by red weevil. Its life history and feeding habits on the eggs and early instar grubs of red palm weevil were studied. Eggs are laid in clusters. The average incubation period was 6-5 days. There were four nymphal instars and the average total nymphalperiod was 45 • 6 days. The adults lived for 66-8 days and the total life cycle lasted for 69-153 days. On an average one earwig in its life period consumed as many as 662-4 eggs or 633-5 early instar grubs.Item Chemical control of black pepper 'pollu' beetle, Longitarsus nigripennis Mots. (Coleoptera: chrysomelidae)(1974) Pillai, G.B.; Abraham, V.A.The pollu or hollow berry in pepper, caused by the flea beetle Longitarsus nigripennis Mots., is responsible for 30-40% losses in yield. Field control trials with different insecticides showed that dimethoate 0-1%, quinalphos 0-1% or endsoulfan 0-1%, when sprayed twice in July and October, is effective in reducing pest infestation. The results are important in that these insecticides can replace the presently recommended DDT for the control of pepper pollu beetle.Item News and Notes: Biology of Metanastria hyrtaca Cram.,A Defoliator of Cashew(1974) Radhakrishnan Nair, C.P.; Abraham, V.A.; Pillai, G.B.Item Present Management Technologies For Red Palm Weevil, Rhynchophorus Ferrugineus Oliver (Coleopteran: Curculionidae) In Palms And Future Thrusts(2002-12) Abraham, V.A.; Faleiro, J.R.; Radhakrishnan Nair, C.P.; Saritha S. NairItem Preventive Measures Against Red Weevil In Coconut Palm(1971-12) Abraham, V.A.; Chandy KurianItem Record of a Coreid Bug (Nut Crinkler) as a New Pest of Coconut in India(1972-01) Chandy Kurian; Abraham, V.A.; Pillai, G.B.; Mathen, K.Item Studies on Paradasynus Rostratus Dist. (Heteroptera: Coreidae) A Pest of Coconut(2007) Chandy Kurian; Abraham, V.A.; Abdulla Koya, K.M.Paradasynus roslratui Dist. a coreid bug was recently recorded as a new pest of coconut in India. The nymphs and adults feed Ion the tender nuts causing immature nut fall or malformation of nuts.There are five nymphal instars and the total life periods 82-97 days.The description of various stages, life history, nature and extent of damage and the distribution of the pest in space and time are discussed.