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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: Manisha × End date: 2023 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Biology of polyommatus boetius (L.) on fieldpea and evaluation of various genotype against major insect pests
    (CCSHAU, 2016) Manisha; Roshan Lal
    The present studies entitled “Biology of Polyommatus boeticus (L.) on fieldpea and evaluation of various genotypes against major insect pest” was carried out during rabi 2015-16 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 2 to 3 days, respectively. A single female could lay maximum of 15 eggs and minimum of 13 eggs (average 14 eggs) during her life time. On fieldpea, the longevity of male moths was ranged from 7 to 9 days (average 8 days) and longevity of female moths varied from 9 to 10 days (average 9.5±0.42 days). Incubation period varied from 2 to 3 days (average 2.5±0.7 days). The total larval period ranged from 11 to 13 days (average 12±0.22 days). Average Prepupal period ranged from 2 to 3 days (average 2.22±0.13 days) and pupal period ranged from 6 to 9 days (average 8±0.22 days). Average female to male sex ratio was 1.0 to 1.5. It was found that the mating of adults of P. boeticus occurred in day time only. When the mating was disturbed the pair flew without separation and continued mating. Mating period of P. boeticus varied from 48 to 64 minutes (average 54.3 ±0.07 minutes). Results revealed that the total life cycle varied from 29 to 35 days (average 32.8±4.24 days). Morphometric studies on P. boeticus revealed that the eggs measured 0.47 to 0.57 mm in diameter (average 0.52 mm). Average body lengths of 1st, 2nd, 3rd and 4th instar larvae were 1.17, 2.10, 7.59 and 11.09 mm and average body width of 1st, 2nd, 3rd and 4th instar larvae were 0.16, 0.69, 1.15 and 1.39 mm. Average head capsule length of 1st, 2nd, 3rd and 4th instar larvae were 0.22, 0.70, 1.25 and 1.46 mm. Average head capsule width of 1st, 2nd, 3rd and 4th instar larvae were 0.15, 0.64, 1.10 and 1.34 mm. On an average, pre pupa measured 10.80 mm in length and measured 4.94 mm in width and pupa measured 10.62 mm in length and measured 4.45 mm in width. On an average 1st, 2nd, 3rd, 4th larval instar, pre pupa and pupa male weighted 0.004, 0.021, 0.064, 0.170, 0.155 and 0.088 mg, respectively. Immature stage was not distinguishable in male and female. Adult antennae, fore leg, middle leg and hind leg measured 7.93, 5.78, 6.05, 6.28 mm long in female and 7.02, 5.63, 5.91 and 6.15 mm in male. The average wingspan measured 29.90 mm in male and 33.28 mm in female. Out of the 18 genotypes screened against pod borer complex comprising H. armigera, E. zinckenella and P.boeticus at green pod stage, the infestation ranged from 0.11 to 1.22, 0.00 to 1.44 and 00 to 0.33 larvae/ 3 plants, respectively, whereas at maturity it varied from 0.48 to 7.53, 7.31 to 22.10 and 0.50 to 1.60 per cent, respectively. Genotypes HFP-1137, HFP-530B, and HFP-529 were least susceptible and genotype HFP-8712 was highly susceptible against H. armigera. There was positive and significant correlation of 50 per cent flowering with H. armigera and E. zinckenella. Pod wall thickness had negative and significant correlation with H. armigera and E. zinckenella. Pod length was positive and significantly correlated with P. boeticus pod damage. Trichome density was negative and significantly correlated with E. zinckenella larval population and P. boeticus pod damage. Seasonal incidence studies revealed that C. indicus population had significant negative correlation with temp (min.). H. armigera and P. boeticus population had non- significant correlation with abiotic factors. E. zinckenella larval population had significant positive correlation with Temperature (Tmax.). C. horticola population had significant negative correlation with temp.(max & min) and significant positive correlation with morning relative humidity.