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Dey, D.
- Management of Insecticide Resistance in Insect
Abstract Views :217 |
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Authors
D. Dey
1,
S. Routray
1
Affiliations
1 Department of Entomology, College of Agriculture, Orissa University of Agriculture and Technology, Bhubaneswar (Odisha), IN
1 Department of Entomology, College of Agriculture, Orissa University of Agriculture and Technology, Bhubaneswar (Odisha), IN
Source
Rashtriya Krishi (English), Vol 11, No 1 (2016), Pagination: 22-23Abstract
Resistance has been defined as a developed ability in a strain to tolerate doses of toxicants which would prove lethal to the majority of individuals in normal population of the same species (Anonymous,1957), World Health Organization (WHO), Expert Committee on Insecticides, (1957). Insecticides resistance management (IRM) strategies are becoming more important in agricultural production system. Pest resistance to a insecticide can be managed by reducing selection pressure by the insecticide on the pest population.Preventing and managing resistance to insecticides is an important stewardship practice that ensure insect control products will remain effective long term.In other words, the situation when all the pest except the most resistant ones are killed by a given chemical should be avoided.Resistance to insecticides was first documented in 1914 by A. L. Melander in the Journal of Economic Entomology.
References
- Hoy, M.A. (1995). Multitactic resistance management: An approach that is long overdue? Fla. Entomol., 78: 443 - 451.
- Melander, A.L. (1914). Can insects becomes resistant to sprays. J. Econ. Entomol.
- Roush, R.T. and Tabashnik, B. E. (1990). Pesticide resistance in arthropods. Chapman and Hall, NEW YORK, U.S.A.
- http://entomologytoday.files.wordpress.com/2014/04/melander-jee-1914.pdf.
- Snails and Slugs as Crop Pests
Abstract Views :223 |
PDF Views:0
Authors
S. Routray
1,
D. Dey
1
Affiliations
1 Orissa University of Agriculture and Technology, Bhubaneswar (Odisha), IN
1 Orissa University of Agriculture and Technology, Bhubaneswar (Odisha), IN
Source
Rashtriya Krishi (English), Vol 11, No 1 (2016), Pagination: 40-41Abstract
Snails and slugs are part of the class of creatures called gastropods. Gastropod comes from the Greek wordsgastros (stomach) and podos (foot). They are the animals without backbones, having asymmetrical, unsegmented and spirally coiled body. When snails have a well-developed shell, slugs have only a rudimentary shell often enclosed in a visceral hump. Snails and slugs are hermaphrodites but there is reciprocal exchange of spermatozoa as they mature before development of eggs. Self-fertilization is prevented. They have good protection against dehydration; hence they avoid direct sunlight and environments with a low relative humidity. They hide during day time in moist places or under debris and feed mainly at night when the temperature drops and humidity rises. Snails secrete light yellow slime and slugs secrete colourless slime which becomes silvery after drying.References
- Aravind, N.A., K.P. Rajashekhar and Madhyastha, N.A . (2010). A review of ecological studies on patterns and processes of distribution of land snails of the Western Ghats, India. Proceeding of World Congress of Malacology, 222pp.
- Atwal, A.S. and Dhaliwal, G.S. (2010). Birds, mammals, snails and slugs.Agricultural Pests of South Asia and Their Management. Kalyani Publishers, 519pp.