Thumbnail Image

Chaudhary Sarwan Kumar Himachal Pradesh Agriculture University, Palampur

Himachal Pradesh Krishi Vishvavidyalaya (renamed as Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya in June, 2001) was established on 1st November, 1978.The College of Agriculture (established in May, 1966) formed the nucleus of the new farm University. It is ICAR accredited and ISO 9001:2015 certified institution. The Indian Council of Agricultural Research has ranked this University at eleventh place among all farm universities of the country. The University has been given the mandate for making provision for imparting education in agriculture and other allied branches of learning, furthering the advancement of learning and prosecution of research and undertaking extension of such sciences, especially to the rural people of Himachal Pradesh. Over the years, this University has contributed significantly in transforming the farm scenario of Himachal Pradesh. It has developed human resources, varieties and technologies and transferred these to farming community enabling the State to receive the “Krishikarman award” of Govt. of India four times in row for food grain production among small states of the country. Today, the State has earned its name for hill agricultural diversification and the farming community has imposed its faith in the University.

Browse

20181
Reset filters
Subject: Plant Pathology × Author: Bahman, Richa × Start date: 2018 × Type: Thesis ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    STUDIES ON LEAF BLIGHT OF MAIZE IN HIMACHAL PRADESH
    (CSKHPKV, Palampur, 2018-07-24) Bahman, Richa; Sud, Arun Kumar
    The present investigation entitled “Studies on leaf blight of Maize in Himachal Pradesh" was undertaken to study the predominance of the pathogenic species associated with leaf blight of maize, factors affecting disease development and evaluation of management practices against the disease. The leaf blight disease of maize was prevalent in all the seven districts surveyed during 2016-17 viz., Una, Bilaspur, Kangra, Hamirpur, Kullu, Mandi and Sirmaur in moderate to severe form . Macroscopic and microscopic examinations of diseased samples collected from different regions of Himachal Pradesh showed the predominance of maydis leaf blight in district Sirmaur, Una, Kangra, Mandi, Hamirpur and Bilaspur and of turcicum leaf blight in district Kullu. Ten isolates of Bipolaris maydis and Exserohilum turcicum each were collected and further used to study morpho-cultural variability. On the basis of morpho-cultural characteristics, ten isolates of Bipolaris maydis and Exserohilum turcicum were categorized and placed in three groups each. Pathogenicity test was conducted with each of the two associated pathogens viz., Bipolaris maydis and Exserohilum turcicum on the highly susceptible Maize variety „Early Composite‟ and the Koch‟s postulates were proved for Bipolaris maydis and Exserohilum turcicum thereby confirming the pathogenicity of the test pathogens. Potato Dextrose Agar was found to be the best medium both for radial growth as well as sporulation of the Bipolaris maydis. Maximum relative humidity and Maximum temperature was found to be correlated with disease severity on maize against Bipolaris maydis. Among bioagents, SMA-5 strain of Trichoderma harzianum showed maximum mycelial inhibition of 63.33 per cent against the Bipolaris maydis. Fungicides propiconazole (Tilt 25 EC) and mancozeb (Indofil M-45) at 0.005 per cent test concentration showed mycelial inhibition up to 100 per cent outperformed the other fungicides under in vitro evaluation through poisoned food technique. Four sprays of propiconazole and mancozeb gave best disease control of 61.92 and 55.79 per cent under field conditions against Bipolaris maydis. Out of 65 germplasm lines evaluated, fourty nine lines were moderately resistant to turcicum leaf blight and fourty one lines were moderately resistant to maydis leaf blight and fourty one lines were found to exhibit moderate resistance against both leaf blight of maize.