Browsing by Author "Natarajan, P."
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Item Biological control of insect pests of coconut—A review(2007-02-08) Chandy Kurian; Pillai, G.B.; Antony, J.; Abraham, V.A.; Natarajan, P.Oryctes rhinoceros L , Nephanlis serinopa M., Rhynchophorus ferrugineus F., and Leucopholis coneophora B. are the major pests of coconut in India. These insects are attacked by a number of parasites, predators, and microorganisms including nematodes. The most important biological control agents for the control of the black beetle are the indigenous predators Sntalus paralletus P.,Agrypnus (near bifoveatus C), and the exotic reduviid bug Platymeris laevicollis G. The pathogens Mctarrhizium anisopliae (M.) S., Rhabdionvirus oryctes and a nematode Neoaplectana carpocapsae D. (DD-136) also show promise. The establishment of the above agents depends very much on the ecological conditions and biotic factors. No biological agent other than Chelisoches mods F. has been reported on red palm weevil in India. The scope of utilizing parasites, predators, and pathogens for the control of the cockchafer is also discussed. The leaf eating slug caterpillars Contheyla rotunda^., Macroplectranararia M.,and Parasa lepidaC. are attacked by bacterial, fungal and insect parasites. Stephanitis typicus D., the suspected vector of the root (wilt) disease of coconut, has a predator in Stethoconus paraefectus D. Mention is made also of parasites obtained on these pests from other countries. A few such examples of Aspidiotus destructor S. (found in India as well), Artona catos-cantha H., Levuana irridiscens B-B, and Promecotheca reichii B. are given. Some of the main problems encountered in their utilization are also pointed out.Item Check these pests of cacao(2007-02-08) Chandy Kurian; Natarajan, P.; Sethumadhava Menon, K.Item Efficacy of two indigenous traps for trapping rodents in a coconut plantation(2007-02-08) Chandy Kurian; Natarajan, P.; Abdulla Koya, K.M.The effectiveness of two rat traps, bamboo snap back-rum-noose trap and plank trap/ death fall trap, was tested in a coconut plantation (23.5 ha area) for 24 months and 9 months, respsctively. The former gave 15.5% catch of Bandicota bengalensis and the latter gave 24.6% catch of three rat species Bandicota indica, Rattus rattus, and Tatera indica.Item Magnitude of the Rat Problem and Possible Solution(2007-02) Abdulla Koya, K.M.; Natarajan, P.; Chandy KurianItem Pest Management in Coconut Gardens An Integrated Approach(2007-02) Chandy Kurian; Antony, J.; Abraham, V.A.; Natarajan, P.Item Rodent Control(1976) Natarajan, P.; Chandy Kurian; Abdulla Koya, K.M.