Thumbnail Image

M. Sc. Dissertations

Browse

20162
Reset filters
Subject: Plant Pathology × Start date: 2016 ×
Reset filters

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    ThesisItemOpen Access
    Standardization of cultivation technology of blue oyster mushroom (Hypsizygus ulmarius) in Haryana
    (CCSHAU, 2016) Sharma, Pankaj Kumar; Fateh Singh
    Hypsizygus ulmarius (Bull.ex.Fr.) Redhead has been studied to optimize physiological conditions, suitable substrate, supplement and its cultivation to harvest maximum yield. Two cultivation trials were carried out during October - December, 2015 and February – April, 2016 under natural conditions of Haryana. Gram flour (5 %) supplemented wheat straw was treated with hot water (60 0C) and chemicals viz., Bavistin ; 50 ppm, Formalin ; 500 ppm and Bavistin;50 ppm + Formalin;500 ppm. Maximum yield (661 g), least spawn run period (21.9 days), pinhead appearance (23.7 days) and mould incidence (11.7 %) was observed when wheat straw substrate treated with hot water (60 0C for 30 minutes). Physiological study of H. ulmarius was conducted to optimize temperature and pH using PDA medium to obtain maximum growth. Radial growth and biomass were maximum at 25 ±1 0C and pH 7.0.
  • Thumbnail Image
    ThesisItemOpen Access
    Studies on epidemiology and management of pearl millet rust incited by Puccinia substriata var. pennicillariae
    (CCSHAU, 2016) Annu; Kushal Raj
    Rust caused by Puccinia substriata var. penicillariae is one of the major disease affecting both forage and grain production in pearl millet. The present investigation was undertaken to study the role of weather factors in relation to development of pearl millet rust on three hybrids viz., HHB 197, HHB 223 and HHB 67 Imp at three different dates of sowing (early, recommended and late). Among three hybrids rust severity was more in HHB 223 on 2nd date of sowing (recommend sown) and AUDPC was more in HHB 223 corroborating with HHB 197 but lesser in HHB 67 Imp. Apparent infection rate was variable at different stages depending upon environmental conditions corroborating to the stage of crop. Maximum periodical progression of the disease was observed during last week of October, Amongst 228 entries of coordinated trials, none of the entry was free from rust severity, 10 entries showed 0.1-20% rust severity, 48 entries showed 20.1-40% rust severity, 80 entries showed 40.1-60% rust severity, 67 entries showed 60.1-80% rust severity and 23 entries showed more than 90% rust severity. Amongst 276 entries of state trials, 39 entries were free from rust severity, 188 entries showed 0.1-20% rust severity, 71 entries showed 20.1-40% rust severity, 15 entries showed 40.1-60% rust severity, two entries showed 60.1-80% rust severity and none entry showed more than 80% rust severity. Various plant product, bioagent and fungicides were evaluated under screen house and field condtions. Propiconazole 25% EC @ 0.1% managed the rust most effectively and significantly both under screen house and field conditions. Maximum Grain yield (514.7 kg/acre), test weight (8.13 g) and Benifit: Cost ratio 3.98: 1 was observed in Propiconazole 25% EC (0.1%) sprayed plot followed by Hexaconazole 5% EC (0.1%) and proved most economical in managing the rust of pearl millet.