National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The Terminalia arjuna is an important deciduous tree species in India and is being utilized for both medicinal as well as sericulture purposes. The monoculture nature and continuous use of plantation for rearing of silkworm has profound negative effect on plants vigor, which attract variety of insect pests. Among them, the borer is very important pests on T. arjuna, due to their persistence attacking behavior, mainly on weak and young plants. Among the borer complex, Sphenoptera cupriventris Kerr. (Coleoptera: Buprestidae) and Indarbela quadrinotatais (Walker) (Lepidoptera: Cossidae) are important pests on T. arjuna which causes severe damage and reduce plants vigor gradually. Studies were conducted to evaluate the status of S. cupriventris and I. quadrinotatais on T. arjuna in around Bilaspur, Chhattisgarh and their management using different insecticides. The S. cupriventris infestation was significantly more in the block plantation compared to the natural plantation. Whereas, bark eating caterpillar incidence on T. arjuna was non-significant between block and natural plantation. The infestation of S. cupriventris and I. quadrinotatais on T. arjuna was 51.84 % and 10.41 % at Kargi Kota and 27.19 % and 13.58 % at Bilaspur, respectively. The distribution studies indicated that both the pests were negative binomial with contiguous distribution in Kargi Kota and Bilaspur. The insecticide evaluated date indicated that nearly 93.33 % and 90.00 % of plants treated with chlorpyrifos 20 EC @ 2 ml and deltamethrin 2.8 EC @ 1 ml found free from bark eating caterpillar damage. Whereas, imidacloprid 17.8 SL@ 0.6 ml/l and 0.4ml/l, dichlorvos 76 EC@ 2.5 ml/l and monocrotophos 36 SL @ 2 ml/l treatments caused cent percent mortality of grubs in more than 90 % plants.
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