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Chaudhary Charan Singh Haryana Agricultural University, Hisar

Chaudhary Charan Singh Haryana Agricultural University popularly known as HAU, is one of Asia's biggest agricultural universities, located at Hisar in the Indian state of Haryana. It is named after India's seventh Prime Minister, Chaudhary Charan Singh. It is a leader in agricultural research in India and contributed significantly to Green Revolution and White Revolution in India in the 1960s and 70s. It has a very large campus and has several research centres throughout the state. It won the Indian Council of Agricultural Research's Award for the Best Institute in 1997. HAU was initially a campus of Punjab Agricultural University, Ludhiana. After the formation of Haryana in 1966, it became an autonomous institution on February 2, 1970 through a Presidential Ordinance, later ratified as Haryana and Punjab Agricultural Universities Act, 1970, passed by the Lok Sabha on March 29, 1970. A. L. Fletcher, the first Vice-Chancellor of the university, was instrumental in its initial growth.

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Subject: Entomology × Author: Gulshan Kumar × End date: 2019 × Start date: 2010 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Studies on biology of Etiella zinckenella Treiteischke on lentil and evaluation of lentil genotypes against this pest
    (CCSHAU, 2016) Gulshan Kumar; Yadav, S.S.
    The present studies entitled “Studies on biology of Etiella zinckenella Treiteischke on lentil and evaluation of various genotypes of lentil against this pest” was carried out during rabi season 2015 at Reseach farm of Pulses Section, Department of Genetics and Plant Breeding and Laboratory of Department of Entomology, CCS HAU, Hisar. For conducting biological studies, rearing was done in laboratory at 28±10C and relative humidity (60-70%). Results revealed that pre-oviposition, oviposition and post-oviposition period ranged from 1 to 2, 2 to 3 and 1 to 2 days, respectively. A single female laid maximum of 65 eggs and minimum of 45 eggs (average 56.3 eggs) during her life time. and eggs were whitish and oval in shape. On lentil, the longevity of male moths ranged from 3 to 5 days (average 4.1 days) and longevity of female moths varied from 5 to 6 days (average 5.6 days). Average incubation period was observed to be from 5.18 to 5.38 days (average5.24 days). The total larval period ranged from 15 to 19 days (average 16.9 days). Average Pre-pupal period ranged from 1.9 to 2.3 days (average 2.04 days) and pupal period ranged from 12.7 to 13.9 days (average13.38 days). Average female to male sex ratio was 1.0 to 1.4 and males outnumbered the females.. Mating period of E. zinckenella varied from 43 to 63 minutes (average 51.5 minutes). Results revealed that the total life cycle varied from 37 to 45 days (average 40.9 days). Morphometric studies on Etiella zinckenella revealed that the eggs measured 0.47 to 0.57 mm in length (average 0.51 mm) and 0.30 to 0.40 mm in width (average 0.35mm). Average length of 1st, 2nd, 3rd, 4th and 5th instar larvae was observed to be 0.89, 2.83, 6.22, 11.29 and 15.33 mm, respectively and average width of 1st, 2nd, 3rd, 4th and 5th instar larvae were 0.15, 0.78, 1.49, 2.21and 2.89 mm, respectively. Average head capsule width of 1st, 2nd, 3rd, 4th and 5th instar larvae were 0.10, 0.50, 0.82, 0.94 and 1.20 mm, respectively. On an average, male pupa measured 8.80 mm in length and measured 2.67 mm in width and female pupa measured 8.74 mm in length and measured 2.61 mm in width. Average length & width of the male and female moth was 12.20 mm and 22.09 mm and 11.34 mm and 21.13 mm, respectively. Out of the 20 genotypes screened against Etiella zinckenella at green pod stage, the infestation ranged from 2.0 to 4.0 per cent, whereas at maturity it varied from 4.0 to 24.0 per cent in different genotypes. Genotypes LL 1136, IPL 315, ,RKL 608-1, FLIPILL 6089, RKL 1-32, RKL 1003- 33D, L 4096 were charactersied as least susceptible. Morphological characters of the genotypes i.e. 50 per cent flowering , number of grains/ pod, pod wall thickness, pod length and days to maturity were evaluated and correlated with per cent pod damage at green and mature pod stage. There was positive and significant correlation between pod length and pod damage at both green & mature pod stage. Population dynamics studies revealed significant negative correlation of aphid population with the Temperature (Tmax. & Tmin.), significant positive correlation of E. zinckenella with the Temperature (Tmax. & Tmin.) and non significant correlation of H. armigera population with the abiotic factors.