Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-22T19:45:33.445Z Has data issue: false hasContentIssue false
  • English
  • Français

Yield loss assessment and economic injury level for the leaf miner aproaerema modicella (Deventer) (Lepidoptera: Gelechiidae) on Soyabean in India

Published online by Cambridge University Press:  19 September 2011

M. Kalayanasundaram  and
Sellammal Murugesan
M. Kalayanasundaram
Affiliation:
Centre for Plant Protection Studies, Tamil Nadu Agriculture Unversity, Coimbatore 6410003, India
Sellammal Murugesan
Affiliation:
Centre for Plant Protection Studies, Tamil Nadu Agriculture Unversity, Coimbatore 6410003, India
Get access

Abstract

In experiments to find the yield loss in soyabean due to the leaf miner, Aproaerema modicella (Deventer) and estimate the economic injury level (EIL), plants were infested at 30 and 45 days after sowing (DAS) with a fixed number of laboratory reared second instar larvae.

Grain yield was not reduced by one larva per plant at both 30 and 45 DAS, but the yield reduction which ranged from 2.7 to 6.1% was significant with two larvae per plant at both the ages. With an increase in larval population, there was a corresponding decrease in yield to the extent of 40% and 66% with 10 larvae/plant at 30 and 45 DAS respectively.

The regression of yield of leaf miner infestation indicated that yield was reduced by 0.463 and 0.716 g per plant for every larva per plant at 30 and 45 DAS respectively. Yield loss was greater in plants infested at 45 DAS than at 30 DAS with all populations tested.

The estimated economic injury level for A. modicella is 0.6 larva/plant at 30 DAS, and 0.2 larva/plant at 45 DAS. The suggested economic threshold level in soyabean of 85–90 days duration is 0.5 larva/plant (1 larva/2 plants) at 30 DAS and 0.2 larva/plant (1 larva/5 plants) at 45 DAS.

Keywords

Leaf minerAproaerema modicellaeconomic injury levelyield lossMineur de feuilleAproaerema modicellaniveau du dommage economiqueperte du rendement
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 10 , Issue 4 , August 1989 , pp. 545 - 550
Copyright
Copyright © ICIPE 1989

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Arunin, A. (1978) Pests of soyabean and their control in Thailand. In Pests of Grain Legumes: Ecology and Control. (Edited by Singh, S.R., Emden, H.F. and Ajibola, Taylor T.). Academic Press. London, U.K.Google Scholar
Directorate of Agriculture, Tamil Nadu (1988) In Crop Production Manual. Directorate of Agriculture, Tamil Nadu, India.Google Scholar
Gujarati, J.P., Kapoor, J.P. and Gangrade, G.A. (1973) Biology of soyabean leaf miner, Stomopteryx subsecivella (Lepidoptera: Gelechiidae). Entomologist 106, 187–191.Google Scholar
Kapoor, K.N., Gujarati, J.P. and Gangrade, G.A. (1975) Chemical control of soyabean leaf miner Stomopteryx subsecivella (Lepidoptera: Gelechiidae). Indian J. Entomol. 37, 286–291.Google Scholar
Rai, P.S., Reddy, K.V.S. and Govindan, R. (1973) A list of insect pests of soyabean in Karnataka State. Curr. Res. 2, 97–98.Google Scholar
Stern, V.M. (1966) Significance of the economic threshold in integrated pest control. In Proceedings of the Food and Agriculture Organization Symposium on Integrated Pest Control, Food and Agriculture Organization, Rome, Part 2, pp. 41–55.Google Scholar
Stone, J.P. and Pedigo, L.D. (1972) Development and economic injury level of the green clover-worm on soyabean in Iowa. J. Econ. Entomol. 65, 197–210.Google Scholar
Tejkumar, S. (1980) S tudies on crop loss in groundnut Arachis hypogaea Linn, due to leaf miner, Stomopteryx subsecivella Zell. (Lepidoptera: Gelechiidae) and determination of its economic injury levels. Mysore J. agric. Sci. 14, 258.Google Scholar