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Sood, A. K.
- New Record of Lepidopteran Husk Feeders, Garella ruficirra (Hampson) and Conogethes Sp. on Pecan from India
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Authors
Affiliations
1 CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 Division of Entomology, Indian Agricultural Research Institute, New Delhi-110 012, IN
1 CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 Division of Entomology, Indian Agricultural Research Institute, New Delhi-110 012, IN
Source
Himachal Journal of Agricultural Research, Vol 42, No 1 (2016), Pagination: 94-95Abstract
Pecan [Carya illinoensis (Wang) K Koch.] fruits were found infested by two husk feeders, Garella ruficirra (Hampson) and Conogethes sp. during July-August, 2015 at Palampur representing mid-hill regions of Himachal Pradesh. The infestation ranged from 10-65 per cent in different orchards/ plantations. Feeding by these insects resulted in appreciable reduction in yield due to pre-mature fruit drop and secondary infection of micro-organisms. Amongst two husk feeders, G. ruficirra was the dominating species (95%). Both of them were recorded for the first time infesting pecan and seem to be new pest record of pecan in India.Keywords
Husk Feeder, Garella ruficirra, Conogethes sp., Pecan, New Record.Full Text
References
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- Determining Resistance Level to Acaricides in Field Populations of Two Spotted Spider Mite, Tetranychus urticae in Himachal Pradesh
Abstract Views :180 |
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Authors
Titiksha
1,
A. K. Sood
1
Affiliations
1 Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176 062, IN
1 Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176 062, IN
Source
Himachal Journal of Agricultural Research, Vol 45, No 1&2 (2019), Pagination: 62-65Abstract
Two spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) is highly polyphagous and cosmopolitan pest attacking wide range of crops, limiting the yield and thus, cause huge economic losses. Mite abundance is increasing in spite of using acaricides in Himachal Pradesh which may be attributed to acaricidal resistance in mites. Studies on T. urticae populations collected from six localities were undertaken during 2018-19 against three acaricides, namely, fenazaquin, hexythiazox and propargite. The studies revealed that resistance development was there among field populations collected from different localities. The resistanc for fenazaquin, hexythiazox and propargite were in range of 3.62 to 4.26, 1.88 to 2.45 and 3.47 to 5.63, respectively. The Una population was found most resistant to all the acaricides followed by Kullu and Solan. The Palampur population was observed to be least resistant to acaricides.Keywords
Tetranychus urticae, Resistance, Acaricides.Full Text
References
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- Patil CM, Udikeri SS and Karabhantanal SS. 2019. Acaricide resistance in Tetranychus urticae Koch populations of grapevine orchard in northern Karnataka, India. Journal of Agriculture and Horticulture Research 2 (1):1-4.
- Recep AY, Elvan S and Ismail K 2005. Response to some acaricides of the two spotted spider mite (Tetranychus urticae Koch) from protected vegetables in Isparta. Turk. Journal of Agricultural For. 29: 165-171.
- Sato ME, Silva MZD, Raga A and Filho MFDS 2005. Abamectin resistance in Tetranychus urticae Koch (Acari: Tetranychidae): Selection, Cross-resistance and Stability of resistance. Crop Protection 34: 991-998.
- Sharma RK and Bhullar MB 2018. Status of acaricide resistance in field collected two-spotted spider mite, Tetranychus urticae Koch from vegetable growing areas of Punjab, India. Journal of Entomology and Zoological Studies 6: 328-332.
- Screening of Onion and Garlic Genotypes for Resistance against Thrips tabaci Lindeman in Mid-Hill Regions of Himachal Pradesh
Abstract Views :345 |
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Authors
Affiliations
1 Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 Department of Vegetable Science and Floriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, IN
1 Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 Department of Vegetable Science and Floriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, IN
Source
Himachal Journal of Agricultural Research, Vol 46, No 2 (2020), Pagination: 162-168Abstract
In order to explore the possibility of sources of resistance and relative tolerance of cultivars based upon the damage inflicted, studies were undertaken to evaluate onion and garlic entries/genotypes during February-April, 2016. The screening of the genotypes revealed thrips population to remain low till the end of March which attained peak in the first week of April. Mean thrips population count on onion was maximum on ON-14-01 being at par to ALRO 213, ON14-04 and minimum on genotype OLR 1352 which being at par with ON 15-16 and OLR 1372. Among the garlic genotypes AVT-2/GRL-1351 and AVT-1/GN-14-25 showed maximum thrips population whereas GRL-1349 and AVT-1/GN14-23 sustained minimum population. Foliar damage varied from 4.90 to 25.40 per cent and 0 to 6.6 per cent in onion and garlic, respectively. Correlation of population build-up with environmental factors showed positive correlation with prevailing temperature but negative with rainfall, relative humidity, wind speed and sunshine hours for both the crops but correlation with maximum relative humidity and wind speed was significant for onion crop only.Keywords
Allium cepa, Allium sativum, Thrips, Germplasm, Screening.Full Text
References
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- Smith EA, Shields EJ, Fuchs M and Nault BA. 2015. Longdistance dispersal potential for onion thrips (Thysanoptera: Thripidae) and Iris yellow spot virus (Bunyaviridae: Tospovirus) in an onion ecosystem. Environmental Entomology 44: 921-930.