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Biodiversity of Insect Pest Complex Infesting Okra (Abelmoschus esculentus (L.) Moench) Ecosystem

Rupashree Das, Dilip Kumar Saikia, Devee A.

Abstract


A field experiment was conducted during kharif and rabi seasons, 2016 and 2017 respectively at Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat (Assam) to study the diversity of herbivores and their natural enemies in okra ecosystem. Altogether 20 species herbivores and 20 species of predators were recorded in rabi season (February to May) as against 21 species of herbivores with 20 species of predators found during kharif season (July to October) in this ecosystem. Six species of herbivores were identified as “major”, based on relative abundance and they were Aphis gossypii (Glover), Amrascabiguttulabiguttula (Ishida), Bemisiatabaci (Gennadius), Syleptaderogata (Fabricius), Dysdercuscingulatus (Fabricius) and Eariasvittella (Fabricius), in both the seasons. Among the natural enemies, Coccinella transversalis (Fabricius) and Menochilussexmaculatus (Fabricius) were recorded as the most predominant species in okra. A. gossypii, A. biguttulabiguttula, B. tabaci and S. derogata were comparatively more abundant in vegetative stage, while D. cingulatus and E. vittella in reproductive stage of okra. It was observed that, species richness (R), species diversity (H’) and evenness (E) of herbivores was more in kharif season (7.37, 2.14 and 0.74) and least in rabi season (6.90, 2.16 and 0.72) respectively. As regards to the predators, maximum species richness, species diversity and evenness of predators were found in kharif season (4.75, 2.82 and 0.89) as against rabi season (4.96, 2.74 and 0.89) respectively.


Keywords


Okra, Species diversity, Species richness, Species evenness, Pest, predators

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References


De Bach P, Rosen D. Biological Control by Natural Enemies. Cambridge University Press; 1974; 140p.

Purslow J. Friendly Control of Bugs. Farmer’s Weekly. 2004; 140–155p.

Horticulture Statistics at a Glance 2017. New Delhi: Ministry of Agriculture & Farmers Welfare, Government of India; 2017; 310–458p.

Kumar S, Prasad S, Singh RN. Resurgence of Two Spotted Mite due to Acaricides and Botanicals on ‘Okra’. Ann Pl Protec Sci. 2002; 10(2): 51–54p.

Pal S, Maji TB, Mondal P. Incidence of Insect Pest on Okra, Abelmoschus esculentus(L) Moench in Red Lateritic Zone of West Bengal. The Journal of Plant Protection Sciences (JPPS). 2013; 5(1): 59–64p.

Singh NN, Rai S. Relative Abundance of Different Coccinellids in Mustard Ecosystem. Indian J Ent. 2000; 62(4): 422–426p.

Shannon CE, Wiener W. The Mathematical Theory of Communication. Urban: University Illinois Press; 1949; 324p.

Margalef R. Information Theory in Ecology. General Systematics. 1958; 3: 36–71p.

Pielou EC. Mathematical Ecology. New York: Wiley; 1969; 374p.

Bhagat KP. Pest Succession on Okra and Chemical Control of Shoot and Fruit Borer Eariasvillttela (Fab.). M.Sc. (Ag.) thesis submitted to Dept. of Entomology, 1GAU, Raipur (M.P.). 1996.

Dhamdhere SV, Bahadur J, Misra VS. Studies on Occurrence and Succession of Pests of Okra at Gwalior. Indian J Plant Prot. 1984; 12(1): 9–12p.

Netam PK, Ganguli RN, Dubey AK. Insect Pest Succession in Okra. Environment and Ecology. 2007; 25(1): 177–180p.

Roy D, Sarkar PK, Mondal D, et al. Role of Abiotic Factors on Population Buildup of Arthropod Fauna in Okra Ecosystem under Gangetic Alluvial Plain of West Bengal. IJABR. 2018; 8(1): 13–17p.

Singh R, Joshi AK. Pests of Okra (Abelmoschus esculentus Moench.) in Paonta Valley, Himachal Pradesh. Insect Environ. 2003; 9(4): 173–174p.

Boopathi T, Pathak KA, Ngachan SV, et al. Seasonal Incidence of Major Insect Pests on Okra in Mizoram, India. The Journal of Plant Protection Sciences (JPPS). 2011; 3(1): 54–56p.

Rajesh A. Studies on Population Dynamics and Chemical Control of Major Insect Pests of Okra (Abelmoschus esculentus L. Moench). M.Sc (Agri.) Thesis, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (Madhya Pradesh). 2015.

Jatav AK. Studies on Insect Pest Complex of Okra (Abelmoschus esculentus L. monech) and Their Control with Insecticides and Biopesticides. M.Sc. (Ag.) Thesis, JNKVV, Jabalpur, Madhya Pradesh. 2013; 25–58p.

Navneet, Tayde AR, Gupta K, et al. Screening of Different Okra Genotypes against Major Sucking Pests. J Entomol Zool Stud. 2018; 6(2): 71–75p.

Bertolaccini I, Nunez-Perez E, Tizado EJ. Alternative Plants Hosts of Legume Aphids and Predators, in the Province of León (Spain). Cienc Investig Agrar. 2011; 38(2): 233–242p.

Balzan MV, Wäckers FL. Flowers to Selectively Enhance the Fitness of a Host-Feeding Parasitoid: Adult Feeding by Tutaabsoluta and Its Parasitoid Necremnusartynes. Biol Control. 2013; 67(1): 21–31p.

Nguettia CAM, Ngoran MSWO, Fatogoman S, Daouda K. Distribution of Insects according to the Phonological Stages of Okra (Abelmoschus esculentus) and Phytosanitary Practices in Anna (Bingerville, cote divoire). J Agric Biol Sci. 2017; 12(5): 174–181p.


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