![]() Mud pots containing castor cake suspension (2.5 kg) + 5 ml acetic acid 5 gm yeast + longitudinally split tender green petioles of leaves of 30 numbers/acre to trap adult rhinoceros beetles in more numbers. Setting up of attractant traps (mud pots containing sugarcane molasses 2.5kg/toddy 2.5 l + acetic acid 5 ml + yeast 5 g + longitudinally split tender coconut stem/logs of green petiole of leaves of 30 numbers in one acre to trap adult red palm weevils in large numbers. Placement of aggregation synthetic pheromone traps viz., Rhino lure (without feeding stimulant) one / ha Ferro lure one / ha with feeding attractant (Sugarcane molasses 2.5kg + 5 ml acetic acid +5gm yeast) attracted and captured more numbers of black beetles and red weevils of both sexes.Mass rearing of parasitoids at Ambajipeta centre Mass rearing of parasitoids at Aliyarnagar centre Mass multiplication and distribution of Bracon brevicornis and Goniozus nephantidis is being taken up in the AICRP labs for management of Black Headed Caterpillar Laboratory for mass production of coconut parasitoids arenosella they should be invariably conditioned for 72 hours by exposing them to the exposed to odor of larval frass and larval damaged leaves of O. Hence, while releasing paraitoids against O. arenosella was found to be significantly more in conditioned parasitoid release treatment than in the unconditioned parasitoids release treatments. arenosella by exposing them to the odor of larval frass and larval damaged leaves revealed that parasitisation levels of O. Studies conducted at all three centres viz., Ambajipeta, Aliyarnagar and Ratnagiri on olfactory conditioning of parasitoids of coconut black headed caterpillar, O.A technology for the management of coconut black headed caterpillar involving release of Bracon brevicornis 30 no./ tree or Goniozus nephantidis 20 no./ tree was standardized. Root feeding of bio pesticide Azadiractin F5% 10 ml + 10 ml water and inundative release of larval parasitoids Bracon brevicornis, Goniozus nephantidis and pupal parasitoid, Trichospilus pupivora at recommended dose at 21 days interval for each treatment in two phases significantly reduced Cocont Blackheaded caterpillar.The farmers are very much impressed and convinced with the technology demonstrated in their fields.Ĭoconut black headed caterpillar infested and recovered gardens after biological control intervention A very severe out break of this caterpillar was recorded in 20 in East Godavari, West Godavari and Visakhapatnam districts and by release of bio agents Bracon hebetor and Goniozus nephantidis (7.00 lakhs), the pest was successfully managed.A total number of 62.21 lakh prasitoids were supplied during the last 10 years and an area of 10,678 ha of coconut black headed caterpillar affected gardens were covered (2013-14). ![]() This pest was successfully managed through biological control. Regular incidence of coconut black headed caterpillar Opisina arenosella was observed in coastal districts of Andhra Pradesh.When palms are severely damaged, the attacked leaves droop, bunches buckle and the immature nuts shed heavily.Ĭoconut black headed affected coconut gardensĬoconut black headed caterpillar larva and its damage on nuts under outbreaks In severe cases the whole plantation presents a burnt appearance due to the drying of leaves/leaflets with only the upper epidermis intact or in cases of old infestation leaves remain with midrib of the leaflet only. Dried up patches appearing on the upper epidermis of leaves and presence of larval galleries and pupal cases on the lower surface of the leaves are the major symptoms of infestation. The caterpillar lives on the lower surface of leaflets in galleries made of excreta and silken web and feeds on the chlorophyll containing parenchymatous tissues.
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