Thumbnail Image

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.

Browse

20071
Reset filters
Subject: Zoology × Author: Geroh, Monika × End date: 2018 × Type: Thesis × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Ecology and management of tetranychus urticae koch on okra, abelmoschus esculentus L.
    (CCSHAU, 2007) Geroh, Monika; Gulati, Rachna
    Studies on seasonal incidence of T. urticae revealed two peaks in its population on okra during first fortnight of June (25.69 mites/ sq. cm leaf) and during first fortnight of August (22.50 mites/ sq. cm leaf). Predatory beetle S. punctillum also showed two peaks; in the first fortnight of July (0.56 beetle/leaf) and second peak coincided with peak in T. urticae population, in the first fortnight of August (0.48 beetle/leaf). Strata wise, middle strata harboured significantly more number of mites and beetles followed by top and bottom strata. A significant positive correlation(r =0.88) was observed between mite and beetle population during the present study. With abiotic factors, T. urticae and S. punctillum population showed significant positive correlation with maximum and minimum temperature. Under in vitro conditions, direct spray bioassay showed smaller LC50 and LT50 values as compared to treated food bioassay. Under in vivo, P. pinnata oil (6.24%) was most effective which caused 82.3 percent reduction in T. urticae population followed by E. globulus oil @ 4.60% (76.1%), P. pinnata seed extract @ 9.68% (60.5%) and E. globulus leaf extract @ 3.92% (36.68%). All extracts/ oil were found safe to mite predator, S. punctillum.