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Nitharwal, Mukesh
- Population Dynamics of Insect Pests of Green Gram [vigna Radiata (linn.) Wilczek] in Semi-arid Region of Rajasthan
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Authors
Affiliations
1 Department of Entomology, Agricultural Research Station, Durgapura, Jaipur Rajasthan, IN
1 Department of Entomology, Agricultural Research Station, Durgapura, Jaipur Rajasthan, IN
Source
International Journal of Plant Protection, Vol 6, No 1 (2013), Pagination: 62-64Abstract
Three insect pest species, viz., jassid, Empoasca motti Pruthi; whitefly, Bemisia tabaci (Genn.) and thrips, Caliothrips indicus Bagnall appeared as major insect pests of green gram, Vigna radiata (Linn.) Wilczek in the semi-arid region of Rajasthan. The population commenced from first week of August and remained throughout the crop season in both the years (Kharif, 2006 and 2007). The infestation gradually reached at peak (12.40 jassids, 10.80 whiteflies and 9.40 thrips/ three leaves during Kharif 2006 and 13.2 jassids, 11.20 whiteflies and 9.87 thrips/ three leaves during Kharif, 2007) in the first week of September during both the years. Among natural enemies, the populations of Chrysoperla carnea (Steph.) and Coccinella septempunctata L. were high, whereas, Monomorium indicum (Linn.), Menochilus sexmaculatus (Fab.) and Brumus suturalis Fab. were low. The correlation co-efficient (r) of jassid, whitefly and thrips populations was worked out with weather parameters, viz., maximum and minimum temperature and relative humidity. The data indicated a significant negative correlation of jassid, whitefly and thrips with maximum temperature (r=-0.61, -0.56 and-0.54 in 2006 and -0.65, -0.78 and -0.52 in 2007, respectively) and positive significant correlation of thrips with minimum temperature (r=0.67 in 2006 and 0.56 in 2007, respectively). The data indicated a positive significant correlation of jassid, whitefly and thrips with relative humidity (r=0.62, 0.63 and 0.68 in 2006 and 0.70, 0.56 and 0.72 in 2007, respectively).Keywords
Jassid, Whitefly, Thrips, Green Gram, Correlation- The Feeding Efficiency of Natural Enemies on Brown Wheat Mite, Petrobia latens (Muller) Infesting Coriander under Laboratory Conditions
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Authors
Affiliations
1 Department of Entomology, S.K.N. College of Agriculture, (R.A.U.), Jobner (Rajasthan), IN
1 Department of Entomology, S.K.N. College of Agriculture, (R.A.U.), Jobner (Rajasthan), IN
Source
Asian Journal of Bio Science, Vol 3, No 1 (2008), Pagination: 220-221Abstract
Coriander is cultivated for its fruits as well as for the tender leaves. The fragrant odour and pleasant aromatic taste of fruits is due to the presence of essential oil content. Insect pests and mites are one of the major limiting factors for higher production of good quality coriander leaves as well as seeds. Among the insect-pests aphid, Hyadaphis corianderi (Das.) was reported to be of regular occurrence infesting coriander in Rajasthan as well as in the country (Jain, 1984).Keywords
Brown, Wheat, Mite, Petrobia, Latens (MULLER), Coriander.- Impediments and revamping possibilities in India’s agriculture extension services
Abstract Views :243 |
PDF Views:82
Authors
Mukesh Nitharwal
1,
H. S. Jatav
1,
Subhita Kumawat
1,
M. A. Khan
1,
Kailash
1,
S. K. Attar
1,
S. R. Dhaka
1
Affiliations
1 College of Agriculture, Fatehpur, Sikar 332 301, India, IN
1 College of Agriculture, Fatehpur, Sikar 332 301, India, IN
Source
Current Science, Vol 121, No 8 (2021), Pagination: 1012-1013Abstract
No Abstract.References
- UN DESA Report, United Nations Department of Economic and Social Affairs, New York, USA, 2015.
- http://www.agricoop.nic.in/ (accessed on 23 July 2021).