Population Dynamics of Spodoptera exigua (F.) and S. litura (F.) in Soybean

Authors

  • S. Ramesh Babu Department of Entomology, Rajasthan College of Agriculture, MPUAT, Udaipur 313001, Rajasthan
  • Beerendra Singh Department of Entomology, Rajasthan College of Agriculture, MPUAT, Udaipur 313001, Rajasthan

DOI:

https://doi.org/10.55446/IJE.2021.93

Keywords:

Soybean, Spodoptera litura, S. exigua, forecasting, weather factors, population dynamics, pheromone trap, male catches, correlation, regression

Abstract

This study on the population dynamics of Spodoptera exigua (F.) and S. litura (F.) in soybean was done with observations made from 10 days after germination of the crop for two years. The results revealed that these pests are more abundant from July to August- Spodoptera litura (F.) occurred from the first week of July with occurrence of adults increasing with the growing season, and ending with the maturity of the crop. Amongst the current, 1st lag and 2nd lag week weather parameters, the occurrence of adults of S. exigua revealed a significant positive correlation with minimum temperature (r=0.716), evening relative humidity- RH (r=0.535), sunshine (0.621) and wind speed (0.661). Maximum temperature and wind speed exhibited a significant negative correlation with incidence of males of S. litura whereas, morning and evening RH were positively correlated with the incidence at 1-lag and 2-lag weeks. The incidence of larvae of S. litura was significantly influenced by morning RH (r=0.783) in the 2-lag week. The regression equation indicated that an increase in 1 mm rainfall decreased the male moth catches of S. exigua; while, incidence of larva was significantly affected with increase in 1% of morning RH; and incidence of S. litura larvae was related with maximum temperature of 1oC.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Downloads

Published

2022-12-28

How to Cite

Babu, S. R. ., & Singh, B. . (2022). Population Dynamics of <i>Spodoptera exigua</i> (F.) and <i>S. litura</i> (F.) in Soybean. Indian Journal of Entomology, 84(4), 819–823. https://doi.org/10.55446/IJE.2021.93

Issue

Section

Research Communications

References

Abdullah M, Sarnthoy O, Chaeychomsri S. 2000. Comparative study of artifi cial diet and soybean leaves on growth, development and fecundity of beet armyworm, Spodoptera exigua (Hubner) (Lepidoptera: Noctuidae). Agriculture and Natural Resources. 34(3): 339-344.

Arulkumar G, Manisegaran S, Nalini R, Mathialagan M. 2017. Seasonable abundance of beet armyworm Spodoptera exigua (Hubner) infesting Onion with weather factors in Madurai district of Tamil Nadu. Journal of Entomology and Zoology Studies. 5(6): 1157-1162.

Bhalani P A, Ratanpara H C, Patel P V, Savalia R L. 2004. Occurrence of Spodoptera pest on groundnut and castor and its relation with weather parameters. Proceedings. National seminar on trends in pheromone research and technology, National Research Center for Groundnut, Junagadh, Gujarat. p. 32.

Chaudhary H R. Bajpai N K. 2006. Analysis of factors responsible for outbreak of the tobacco caterpillar, Spodoptera litura on soybean in humid south eastern plain (zone V) of Rajasthan. Indian Journal of Entomology. 68: 309-310.

Chattopadhyay N, Balasubramaniam R, Attri S D, Kamaljeet Ray, Gracy John, Khedikar S, Karmakar C. 2019. Forecasting of incidence of Spodoptera litura (tobacco caterpillar) in soybean and cotton using statistical and synoptic approach. Journal of Agrometeorology. 21(1): 68-75.

Dhaliwal G S, Jindal V, Dhawan A K. 2010. Insect pest problems and crop losses: Changing trends. Indian Journal of Ecology. 37(1): 1-7.

GeonHwi l, SoonDo B, HyunJoo K, SungTae P, ManYoung C. 2006. Economic injury levels for the common cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) on soybean. Journal of Applied Entomology. 45: 333-337.

Mehrkhou F, Talebi A A, Moharramipour S, Naveh V H. 2012. Demographic parameters of Spodoptera exigua (Lepidoptera: Noctuidae) on different soybean cultivars. Environmental Entomology. 4(12): 326-332.

Idris A B. and Emelia O. 2001. Development and feeding behaviour of Spodoptera exigua L. (Lepidoptera: Noctuidae) on different food plants. Online Journal of Biological Sciences. 1: 1161-1164.

Kamakshi N, Sagar D, Jayalakshmi V, Chander S. 2019. Weather based prediction model for beet armyworm (Spodoptera exigua Hubner) in chickpea. Journal of Environmental Biology. 40: 84-88.

Khatun M S, Gopal Das, Ahmed K S. Kato-Noguchi H. 2020. Inhibitory effect of buprofezin on the larval growth and development of Spodoptera litura (F.). Indian Journal of Entomology. 82(1): 20-23.

Prasannakumar N R, Chakravarthy A K. Naveen A H. 2012. Infl uence of weather parameters on pheromone trap catches of Potato cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae). Current Biotica. 5(4): 508-512.

Prasad N V V S D, Mahalakshmi M S, Rao N H P. 2008. Monitoring of bollworms through pheromone traps and impact of abiotic factors on trap catch. Journal of Entomological Research. 32(3): 187-192.

Prasad Y G, Gayathri M, Prabhakar M, Jeyakumar P, Vennila S, Subba Rao, A V M, Bhaskara Rao I, Rao K. Rao, V U M. 2013. Population dynamics of Spodoptera litura outbreak on soybean vis-à-vis rainfall events. Journal of Agrometeorology. 15 (Special Issue I): 37-40.

Punithavalli M, Sharma A N. Balaji Rajkumar M. 2013. Seasonality of the common cutworm, Spodoptera litura in a soybean ecosystem. Phytoparasitica. 42:213-222.

Ramesh Babu S, Kalyan R K, Ameta G S. Meghwal M L. 2015. Analysis of outbreak of tobacco caterpillar, Spodoptera litura (Fabricius) on soybean. Journal of Agrometeorology. 17(1): 61-66.

Sonkamble M M, Rana B S. 2019. Population dynamics of important insect pests of soybean in relation to weather parameters. Indian Journal of Entomology. 81(1): 51-54.

Venette R C, Davis E E, Zaspel J, Heisler H. Larsen M. 2003. Mini risk assessment. Rice cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae). Dept. Entomol. Univ. www.http://aphis.usda.gov/ppq/ep/pestdetection/pra/sliturapra.

Xue M, Pang Y H, Wang H T, Li Q L. Liu T.X. 2010. Effects of four host plants on biology and food utilization of the cutworm, Spodoptera litura. Journal of Insect Science 10: 22.