Screening of Germplasms and Population Dynamics of Major Insect Pests of Spring Green Gram Vigna Radiata (Linn.)

Arnima Tamta; Sudhanshu Kumar Jha

doi:10.36948/ijfmr.2023.v05i02.2639

Screening of Germplasms and Population Dynamics of Major Insect Pests of Spring Green Gram Vigna Radiata (Linn.)

Author(s)	Arnima Tamta, Sudhanshu Kumar Jha
Country	India
Abstract	The present investigation was conducted during Spring season of 2021-22 at Norman. E. Borlaug. Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand) and Morphology laboratory of Department of Entomology with the objectives screening of green gram germplasms in field as well as laboratory conditions and occurrence of major insect pests in field conditions. In field conditions major insect pests were observed using various methods such as whiteflies in a whitefly cage, jassids/trifoliate, knockdown approach for thrips and sweep net method for pod bug population. Under laboratory conditions germplasms were screened against Spodoptera litura using choice test method. Investigations on population dynamics shows that population of whitefly was highest during 17th SMW while thrips population was at peak during 19th SMW followed by jassid in 17th SMW and pod bugs in 19th SMW. Based on data recorded among various entries SSME 21-70, SSME 21-55 and SSME 21-53 were found superior among all the test entries against B. tabaci, M. distalis, E. kerri and C. gibbosa infesting green gram. Data of laboratory experiments revealed that when castor was used as standard host, preference index varied significantly from 0.02 (SSME 21-48) to 1.00 (SSME 21-55) at P = 0.05 level of significance while when PM-5 was taken as standard host, significant variation in preference index was recorded from SSME 21-70 (0.01) to SSME 21-43 (1.16) at P = 0.05.
Keywords	Vigna radiata, Germplasms, Population dynamics, Spodoptera litura, Preference index.
Field	Biology > Agriculture / Botany
Published In	Volume 5, Issue 2, March-April 2023
Published On	2023-04-26
Cite This	Screening of Germplasms and Population Dynamics of Major Insect Pests of Spring Green Gram Vigna Radiata (Linn.) - Arnima Tamta, Sudhanshu Kumar Jha - IJFMR Volume 5, Issue 2, March-April 2023. DOI 10.36948/ijfmr.2023.v05i02.2639
DOI	https://doi.org/10.36948/ijfmr.2023.v05i02.2639
Short DOI	https://doi.org/gr6h6z

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Screening of Germplasms and Population Dynamics of Major Insect Pests of Spring Green Gram Vigna Radiata (Linn.)

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