Working paper
Phenolic compounds in the leaves of cultivated cucurbits viz. Trichosanthes dioica Roxb., Lagenaria siceraria (Molina) Standl., Luffa cylindrica (L.) Roem., and Luffa acutangula (L.) Roxb. were carried out through silica gel chromatographic separation to ascertain their relative phylogenetic position. On phytochemical analysis, paired affinity, group...
The Dang valley consists of several patches of confined and unconfined aquifer systems. Drilling data reveals that the northern portion of the study area has more permeable surfaces than the southern and central portions. Annual domestic draft and safe yield were calculated to be 7.43 x106 m3/year and 3.16 x 107 m3/year, respectively. The fact that...
Effects of low pressure radio frequency (rf) plasma treatment on the surface properties of polycarbonate are presented in this paper. Results obtained from the surface energy measurement after different conditions of treatment are compared. After treatment the surface free energy increased from the original value of 35 mJ/m2 to 63-74 mJ/m2. X-ray photoelectron...
Aqueous extracts of six different plants (Acorus calamus, Ageratum conyzoides, Azadirachta indica, Duranta repens, Spilanthes acmella and Urtica dioca) and diluted animal urine (buffalo and cow) were tested for mortality rate of flea beetle (Phyllotreta nemorum) in the laboratory. Results were compared with the effects of commercial neem product (neem azal) on flea...
The physiochemical properties of soils of two different types of forests (pure Shorea robusta and mixed Shorea robusta) were analysed. Soil samples were collected from both types of forest and analyzed for texture, pH, organic matter, humus content, water holding capacity, nitrogen, phosphorous and potassium. In both the pure and mixed forest, soil was sandy loam (60.12% and 50.58% sand, 28.59...
In the first 24 hrs of germination, the dry matter of the growth axis decreased in the control while in 1 mg/l GA3 solution it increased and in 10 mg/l and 100 mg/l the amount remained the same. Exogenous GA3 overcomes the dry matter loss in the growth axis during the initial stage and results in an increase in the amount of dry matter. GA3 application probably...
This paper describes the remote sensing technique used to prepare a land cover map of Surkhang, Upper Mustang Nepal. The latest ASTER image (October 2002) and an ASTER DEM were used for the land cover classification. The study was carried out in Surkhang Village Development Committee (area 799 km2) of Upper Mustang region. The study area falls within the Annapurna Conservation Area...
Identification of restorers and maintainers from cultivars and landraces through test crossing and their use in further breeding programme are the initial steps in three-line heterosis breeding. Two experiments, one in the greenhouse for F1 hybrid seeds production and another in the field for parental screening, were conducted during the 1999 rice growing season at the Institute of Agriculture...
Stream flow, nutrient loading, and sediment yield closely reflect land use and management practices in relation to growing seasons in mid-hill watersheds of the central Himalaya. A preliminary study was conducted to determine approximate total water discharge and sediment yields from the Galaundi and Pokhare catchments. Mean discharge and sediment loads during the 2002 rainy season were 2.1 m...
Viola mandshurica W. Becker and Viola odorata L. belonging to the family Violaceae are reported for the first time from Nepal. The plants were collected along the trail between the suburbs Chovar and Jalbinayak, Kathmandu.
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