Loading...

Effect of Larval Density of Helicoverpa armigera (Hubner) on Pod Damage and Yield of Chickpea

DOI: 10.18805/ag.D-5134    | Article Id: D-5134 | Page : 76-79
Citation :- Effect of Larval Density of Helicoverpa armigera (Hubner) on Pod Damage and Yield of Chickpea.Agricultural Science Digest.2022.(42):76-79
Vipin Kumar, K.C. Gupta, S.K. Jain, Nitin Chawla vipindoriya@rediffmail.com
Address : Rajasthan Agriculture Research Institute, Sri Karan Narendra Agriculture University, Jobner, Durgapura, Jaipur-302 018, Rajasthan, India.
Submitted Date : 18-01-2020
Accepted Date : 21-04-2021

Abstract

Background: Chickpea (Cicer arietinum L.) is cultivated in almost all parts of world covering more than 50 countries spread over Asia, Africa Europe, Australia, north America and South America countries and is the second most important food legumes crop after common bean (Phaseolus vulgaris L.). Chickpea has played a major role in realization of pulse Revolution in india making the country near self-sufficient in pluses. Gram is extensively grow in india. Due to its high nutritional value and its ability to fix atmospheric nitrogen, its more widely cultivated rabi pulse crop. The gram pod borer Helicoverpa armigera (Hubner) is most important pest of chickpea. Many pesticides were so far tested against this pest but due to over use of these pesticides resistance, residue and resurgence problems arises, beside destruction of natural enemies. 
Methods: To determination of per cent pod damage and yield of chickpea due to different larval density of H. armigera is an important tool to reduce the cost of cultivation by avoiding the unnecessary use of pesticides. Therefore, a pot experiment was conducted in arranged in a completed randomized design with four replications. The pots were placed under natural field conditions and take observation at Research farm, Rajasthan Agricultural Research Institute, Durgapura, Jaipur during 2015-16 and 2016-17.
Result: The results revealed that least per cent pod damage (29.05, 24.78%) was recorded when the larval population was one per plant, while the maximum pod damage (64.55 and 67.76%) was recorded during 2015-16 and 2016-17, respectively. The simple liner correlation analysis indicated that there was a significant positive correlation (r= 0.989 and 0.999) between the larval density and per cent pod damage. Further, a significant correlation was noticed between larval density and number of healthy pods per plant, reduction in yield, yield per plant, total number of pod and damaged pods were -0.964, -0.976; 0.98, 0.986; -0.98, -0.986; 0.117, 0.126 and; 0.985 and 0.992, respectively during 2015-16 and 2016-17.

Keywords

Chickpea Helicoverpa armigera (Hubner) Larval density Pod borer

References

  1. Anonymous (1995). Technology for production of natural enemies. ICAR Publication pp. 75-78.
  2. Anonymous (2016). ICAR-AICRP Chickpea Report. Project Coordinator’s Report 2016-17. Annual Group Meet on Chickpea, August 28-30: 2017 pp. 36.
  3. Hammond, R.B. and Pedigo, L.P. (1982). Determination of yield loss relationship for two soybean defoliators by using simulated insect defoliation technique. Journal of Economic Entomology. 75(1): 102-107.
  4. Johnston, R.L. and Bishop, G.W. (1987). Economic injury levels and economic threshold for cereal aphids on spring planted wheat. Journal of Economic Entomology. 80 (2): 478-482.
  5. Odak, S.C. and Thakar, B.C. (1975). Preliminary studies on the economic threshold of gram pod borer Helicoverpa armigera (Hub.) on gram crop. Paper presented in: All India workshop on rabi pulses, APAU. Hyderabad, Sep. 29-Oct. 1: 1975.
  6. Sharma, R. (1985). Studies on biology and extent of damage by gram pod borer Helicoverpa armigera (Hub.) M.Sc. (Unpublished) thesis, HAU, Hissar.
  7. Reddy, C.N., Singh, Y. and Singh, V.S (2001). Economice injury level of gram pod borer Helicoverpa armigera (Hub.) on pigeonpea. Indian Journal of Entomology. 63 (4): 381- 387.
  8. Vaishmpayan S.M. and Veda, O.P. (1980). Population dynamics of gram pod borer, Helicoverpa armigera (Hub.) and its outbreak situation on gram at Jabalpur. Indian Journal of Entomology. 42(3): 453-457.

Global Footprints