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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: Kalkal, Deepika × End date: 2007 × Start date: 2007 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Influence of genetically modified (Bt) cotton cultivar on major insect pests
    (CCSHAU, 2007) Kalkal, Deepika; Dahiya, K.K.
    To study the influence of genetically modified (Bt) cotton cultivars on major insect pests, field experiments were conducted at CCS Haryana Agricultural University, Hisar during kharif 2006. Two Bt genotypes viz., RCH-134 Bt and RCH-317 Bt and their corresponding non-Bt genotypes, one hybrid (HHH-223) and one variety (H-1226) were evaluated for their reaction to sucking pests, bollworms and natural enemies. The experiments were laid out under three sets of conditions viz., unsprayed, sprayed for sucking pests and sprayed for sucking and bollworm pests control conditions. The observations were recorded by adopting standard sampling techniques. The results indicated that no significant difference was recorded in sucking pest (cotton leafhopper and whitefly) populations among all genotypes. However, the incidence of bollworm remained significantly higher in non-Bt genotypes than their corresponding Bt genotypes. Bollworms infestation in green fruiting bodies on Bt genotypes and HHH-223 were below ET throughout the crop season and did not vary significantly. However, the infestation in all genotypes ranged from 0.00-53.65 per cent under unsprayed, 0.00-52.00 per cent under sucking pest control and 0.00-15.05 per cent under sucking and bollworm pest control conditions. Bollworm (Earias spp.) population (larvae/plant) was nil in Bt genotypes, while in non-B genotypes and minimum in HHH-223 under all sets of conditions. The infestation of pink bollworm (Petinophora gosspiella) on boll and locule basis was nil among Bt genotypes under all sets of conditions. However, in non-Bt genotypes boll infestation ranged between 0.00-37.60, 5.10-27.60 and 2.60-12.60 per cent under unsprayed, sprayed for sucking pests and sprayed for sucking and bollworm pests conditions, respectively. And on locule basis it was ranged between 0.00-16.35, 1.78-13.35 and 1.19-5.78 per cent under unsprayed, sprayed for sucking pests and sprayed for sucking and bollworm pests conditions, respectively. Minimum incidence of pink bollworm was recorded in HHH-223 both in boll basis and locule basis under all sets of conditions. Bollworm infestation varied significantly in Bt and non-Bt genotypes, being higher in non-Bt genotypes. Bollworm population (larvae/boll) was nil among the Bt genotypes throughout the period of study. Bollworm infestation on open boll basis in genotypes ranged from 1.05 – 33.37, 0.59 - 26.03 and 0.49 – 20.26 per cent under unsprayed, sprayed for sucking pests and sprayed for sucking and bollworm pests conditions, respectively, while on locule basis, the infestation ranged from 0.30 – 13.90, 0.14 – 11.60 and 0.12 – 6.37 per cent under respective category. Populations of natural enemies were on par in different genotypes during period of study under different sets of experiments. Yield of seed cotton was significantly higher in Bt genotypes than non-Bt genotypes under all sets of conditions.