Browsing by Author "Ambily Paul"
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Item Extent of yield loss in coconut due to the infestation of coreid bug, Paradasynus rostratus Dist.(Indian Society for Plantation Crops, 2009-04) Ambily Paul; Nandakumar, C.; Roy StephenItem Germination and seedling characters in coconut (Cocos nucifera L.) as affected by eriophyid mite (Aceria guerreronis Keifer) infestation(2006) Naseema Beevi, S.; Priya Mohan; Ambily Paul; Thomas Biju MathewAn experiment was conducted at Vellayani during 2002–‘03 to study the effects of eriophyid mite (Aceria guerreronis Keifer) infestation on germination and seedling characters of coconut. Infested nuts (five damage intensities) were sown in a nursery and their germination and seedling characters evaluated. Germinability of nuts per se was not substantially altered by the mite attack. However, collar girth and leaf area of the seedlings were significantly reduced. Although nuts with less than 25% surface damage had no adverse impact, those with more than 25% surface damage and distortion resulting from severe infestation impaired seedling vigour.Item Loss of husk, quality of fibre and coir due to the infestation of coconut eriophyid mite (Aceria guerreronis Keifer)(2002) Ambily Paul; Thomas Biju MathewItem Management of coreid bug, Paradasynus rostratus Dist. on coconut palm in homesteads having mixed cropping(2009) Ambily Paul; Nandakumar, C.; Hebsy BaiChosen neem based botanicals and synthetic chemical pesticides were evaluated against the coreid bug, Paradasynus rostratus Dist., a major pest of coconut in Kerala. In laboratory tests, neem seed oil - garlic emulsion 2% and profenophos 0.05% proved effective. Since the alternative hosts, guava, cashew, cocoa and neem in the multiple cropping system play an important role in population build up of the pest, the effect of applying selected treatments on these alternative hosts on the pest population in the coconut was evaluated in a fanner's field. Application of neem seed oil - garlic emulsion 2% + profenophos 0.025% on alternative hosts was the most effective in reducing the extent of P. rostratus infestation in the surrounding coconut palms.