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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: Zoology × Author: Monika × End date: 2014 × Start date: 2010 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Evaluation of chilli hybrids for resistance against mite, Polyphagotarsonemus latus (Banks) (Acari: Tarsonemidae)
    (CCSHAU, 2014) Monika; Gulati, Rachna
    Studies on the screening of fourteen chilli hybrids against Polyphagotarsonemus latus revealed wide difference in population of P. latus (2.53 to 6.28 mites per leaf), however, none of them was found immune to this pest. Among the hybrids, maximum population developed on hybrid 10/CHIhyb-7 (6.28 mites/leaf) followed by 5.70 mites/leaf on 10/CHIhyb-6; both were statistically comparable with each other but significantly higher than population recorded on other hybrids. Leaf wise, maximum population build up of P. latus was noticed on the top leaves (36.59 %) followed by middle (33.51 %) and bottom (29.89 %) chilli leaves. A peak in mite population was recorded in second fortnight of October (9.54 mites/ leaf), which afterwards showed a gradual decline in number. Hybrids 9/CHIhyb-4, 9/CHIhyb-10 and 9/CHIhyb-8 were marked the least susceptible hybrids; Kashi Anmol, 10/CHIhyb-3, 10/CHIhyb-5 and 10/CHIhyb-16 as slightly susceptible; 10/CHIhyb-2, 10/CHIhyb-9, 10/CHIhyb-10, 10/CHIhyb-11 and 10/CHIhyb-12 as moderately susceptible and 10/CHIhyb-6, 10/CHIhyb-7 as highly susceptible hybrids. A comparison of fertilizer treatments showed that farm yard manure @ 20t/ha was most effective, followed by vermicompost (5t/ha), poultry manure and neem cake (2t/ha) treatment as compared to NPK and control. P. latus population showed significant positive correlation with minimum temperature (r = 0.73), morning (r= 0.70) and evening actual vapour pressure (r= 0.65). Feeding by mites leads to formation of feeding patches, bronzing of leaves, downward curling, stunted growth, and elongation of petiole of older leaves along with younger small sized curled leaves. Negative and highly significant correlation was recorded between mite incidence and fruit number, fruit length and yield. Nitrogen, phosphorus, potassium, total sugar and non reducing sugars of chilli leaves showed a significant decline with increase in P. latus infestation whereas, phenol and reducing sugars increased in mite damaged leaves .