International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 1
First page : (164) Last page : (170)
Article doi: http://dx.doi.org/10.18782/2320-7051.2441
Positioning Cluster Bean, Cyamopsis trtragonoloba L. in an Effective way to Reduce the Major Insect Pest Load of Okra, Abelmoschus esculentus L.
Debashis Roy* and Pijush Kanti Sarkar
Department of Agricultural Entomology, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, Pin: 741 252, West Bengal
*Corresponding Author E-mail: debashisroy915@gmail.com
Received: 11.01.2017 | Revised: 20.01.2017 | Accepted: 22.01.2017
ABSTRACT
Field experiment was carried out to evaluate the role of cluster bean in suppressing the major insect pest load in okra crop by sowing in various fashions. Strip sowing of cluster bean adjacent to okra plots (T1) proved most superior to fulfill the prime objective as compared to border sowing (T2) and skip row sowing (T3) respectively. Sucking pests like okra leaf hopper and whitefly population found least (1.40-12.82 and 0.00-8.72 per 3 leaves respectively) in T1 as compared to T2 (1.75-16.94 and 0.25-11.25 per 3 leaves respectively) and T3 (1.50-20.54 and 1.54-14.55 per 3 leaves respectively). Similar trends were also encountered in case of highest shoot borer (18.72, 15.44, 13.30 and 12.32% mean shoot infestation) and leaf roller (0.35, 0.25, 0.20 and 0.10 mean larval population per plant) infestation in T4 followed by T3, T2 and T1 respectively. But, population of coccinellid predators and spider complex found significantly highest in T1 (1.46 and 0.85 number of motile stages per plant) followed by T2 (1.10 and 0.71 number of motile stages per plant) and T3 (1.05 and 0.70 number of motile stages per plant) respectively. Mean percent tender fruit infestation of okra by E. vittella was also found significantly lower in T1 (5.17-13.95%) along with highest yield potentiality of 10.55 t/ ha as compared to other treatments. T4 registered lowest yield of tender marketable okra (6.39 t/ ha) and proved the effective role of cluster bean in the reduction of major insect pest load under okra agro-ecosystem in a sustainable way.
Key words: Insect Pests, Okra, Cluster Bean, Predators, Yield
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Roy, D. and Sarkar, P.K., Positioning Cluster Bean, Cyamopsis trtragonoloba L. in An Effective way to reduce the Major Insect Pest Load of Okra, Abelmoschus esculentus L., Int. J. Pure App. Biosci.5(1): 164-170 (2017). doi: http://dx.doi.org/10.18782/2320-7051.2441
