POPULATION DYNAMICS AND BIO-INTENSIVE MANAGEMENT OF INSECT PEST COMPLEX IN HIGH-DENSITY MANGO ORCHARDS

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Date
2023
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DIVISION OF ENTOMOLOGY ICAR-INDIAN AGRICULTURAL RESEARCH INSTITUTE NEWDELHI– 110012
Abstract
Mango, Mangifera indica L. (Anacardiaceae) is the national fruit of India and this fruit has developed its own importance all over the world due to its taste and aroma. The present study was conducted in the high-density mango orchard of National Germplasm Repository of Sub-tropical Fruit Crops at ICAR RCER, Farming System Research Centre for Hill and Plateau Region (FSRCHPR), Plandu, Ranchi from January to June, 2023 to study the insect pest population dynamics and formulate effective bio-intensive pest management strategies. A total of 24 species from 18 families of insect pest majority of Hemiptera, Lepidoptera, and Coleoptera orders were observed infesting mango flowers and fruits. The insect pests including, giantscale, Labioproctus poleii (Green), fog scale, Aulacaspistubercularis(Newstead),scale, Pulvinaria polygonata (Cockerell), mango hoppers, Amritodus atkinsoni (Lethierry), Idioscopus niveosparsus (Lethierry), Idioscopus nagpurensis (Pruthi), Fruit flies, Bactrocera zonata (Saunders), B. correcta (Bezzi), B. dorsalis (Hendel) were observed major from flowering to fruit harvest period. Application of Imidacloprid 17.8 % SL @ 0.005 %, Clothianidin 50% WDG @ 0.03% and Dinotefuran 20% SG @ 0.006 % were found most effective against sucking insect pest complex at flowering stage whereas Spinetoram 11.7 % SC @ 0.012% was effective against fruiting stage pest complex and comparatively safer towards natural enemies. The treatment Clothianidin 50% WDG recorded the highest benefit: Cost ratio (6.02) and was found to be the most economical among flowering stage treatments whereas Spinetoram 11.7 % SC was found as most economic (B: C ratio 3.91) at fruiting stage.
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