This study was carried out to evaluate mosquito repellent and oviposition deterrent activities of Solanum nigrum against malaria vector Anopheles stephensi. Hexane extract of the seeds of Solanum nigrum was used for repellent and oviposition deterrent activity against mosquito vector Anopheles stephensi Liston (Diptera: Culicidae) in laboratory bio-assays.

Pulverized coal fly-ash has been evaluated as wet-end filler in manufacture of specialty products such as decorative laminate-grade base papers. Fine sized fly-ash is available abundantly as solid waste from coal based thermal power plants. Non-magnetic fly ash particles smaller than 35 um were used as wet end filler.

Precise characterization and inventorization of soil resource of Moolbari watershed was undertaken using satellite imagery and Survey of India toposheets to generate several layers of maps such as watershed boundary, drainage, soils, land use and land cover, physiography, slope and soil erosion using Geographic Information System technique.

Worldwide agriculture contributes about 14% of greenhouse gas emissions with land use change and forest adding another 19%. There is growing recognition that agriculture is already affecting, and being affected by climate change. Future global food supply will depend on how well agriculture adopts to climate change.

The farming system in the Uttaranchal Himalaya comprises of agricultural crops, horticulture, herb culture, the garden practices and nurseries and fruit plantation or reforestation. These practices reflect the diversity in all respects. The farming of crops is mostly traditional.

It is well known that 50-60% of power generated in India is from thermal power stations. These thermal power plants use coal as a fuel. The high ash content of these coals pose a serious problem to the environment. The flyash production rate is about 25 million tonne for every 5 year.