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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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2009 - 200912010 - 20141
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Subject: Plant Pathology × Author: Vinod Kumar × Start date: 1997 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Epidemiology and management of stemphylium blight of onion (Allium cepa L.) caused by stemphylium vesicarium (Wallr.) simmons
    (CCSHAU, 2009) Vinod Kumar; Gupta, Anil
    In epidemiological studies temperature (maximum) 20.3 to 250C, temperature (minimum) 0.3 to 4.00C, relative humidity (morning) more than 82 to 89 per cent, relative humidity evening 25 to 28 per cent have been observed congenial for the progression of the disease. The regression analysis of disease severity with weather variables showed that temperature (maximum ) and temperature (minimum) were most contributing factors with R2 values 0.91,0.94,0.94 and 0.92 in four dates of transplanting respectively. The correlation coefficient analysis of disease severity concluded that temperature (Maximum) and temperature (minimum) were significant and positively correlated with disease development. However, relative humidity (evening) was found to be non significant, relative humidity (morning) also had a role in disease development. The stepwise regression analysis showed that all the five weather variables produced maximum R2 value in all the four dates of transplanting (0.95-0.98). However the two variables temperature (maximum) and temperature (minimum) were most contributing factor and produced maximum R2 value in all the four dates of transplanting (0.91-0.94). In survival experiment during the month of December no viable spores could be seen in the debris kept under field and lab conditions. However the survival of the pathogen could be noticed in freeze conditions only upto 17.5 per cent. Seven varieties/lines /genotypes were tested against Stemphylium blight of onion. None of these varieties/lines /genotypes showed resistance against Stemphylium blight of onion. The effect of leaf extracts on mycelial growth of the fungus under in vitro conditions revealed that neem leaf extract was best with 71.01 per cent inhibition. Among the fungicides/chemicals mancozeb 0.2 per cent gave highest (76.19 per cent ) disease control. Benefit cost ratio was also calculated on the basis of increase in yield over control and found that mancozeb proved better. However , among the non-traditional chemicals neem leaf extracts or neem seed extracts gave highest benefit cost ratio.
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    ThesisItemOpen Access
    Studies on the myrothecium leaf spot disease of cotton caused by myrothecium roridum tode exFr
    (CCSHAU, 2014) Vinod Kumar; Beniwal, Jagdish
    Studies on Myrothecium leaf spot disease and management through fungicides and nonconventional chemicals were carried out with M. roridum causing Myrothecium leaf spot of cotton. In vitro studies revealed that the maximum disease development was recorded at 25˚C± 1 in both Bt cotton hybrid MRC -6304 Bt and non Bt cotton H-1098 (64.70 & 40.70% respectively). Under screen house conditions pre and post inoculation moist period studies revealed that minimum post inoculation moist period required for initiation of disease was 12 hours and maximum disease infection was found at 48 hours before and after inoculation. However, pre inoculation moist period resulted in increased infection but was not as effective as post inoculation period for disease development under screen house condition. In vitro studies with fungicides and non-conventional chemicals indicated that propiconazole and cobalt chloride at 100 and 1000ppm concentration gave 100 and 87.9% growth inhibition of M. roridum respectively. Foliar spray of propiconazole and salicylic acid at 0.1% and 0.01% concentrateion effective in controls disease significantly found7.60 and 23.95% disease intensity respectively over check in Bt cotton hybrid MRC -6304 Bt and under field conditions. Two spray of fungicides and non– conventional chemicals significantly increased the seed cotton yield and its quality parameters. Fifty seven germplasm lines were found highly resistant to Myrothecium leaf spot disease which can be further used in breeding disease resistant programme.