By Vikas, on September 7th, 2009
…The Green Revolution contributed significatnly in technology transfer from developed world to poor countries. These technologies included improved crop varieties, irrigation methods and management, chemical fertilizers (mainly nitrogen and phosphate), chemical pesticides, management practices etc.
…The high yielding varieties needed high amount of water in frequent interval of irrigation and high dose of chemical fertiliser. While agricultural output increased as a result of the Green Revolution, the energy input to produce a crop has increased faster [2]. Therefore, the per unit of crops produced to energy input has decreased over time. Use of petroleum related agriculture chemicals (fertiliser and pesticide) and high energy need for irrigation made agriculture highly dependent on fossil fuel. So some of the fear of the Peak Oil theory also haunts agriculture…
By Vikas, on August 20th, 2009
India’s annual monsoon rainfall has been 27% lower than the 50-year average in the June 1-Aug 17 period. In Bihar annual rainfall this year is 43% lower than the average of last 50 years(some media is quoting more than 50% shortfall). There was a shortfall of 57.7 per cent in paddy crop coverage and 27.4
Continue reading Effect of draught…
By Vikas, on August 13th, 2009
Groundwater Change in India (2002-08)
In a recent press release from University of California -Irvin, reported the evidence of depleting groundwater resource in Northern India. Using satellite data, UC Irvine and NASA hydrologists have found that groundwater beneath northern India has been receding by as much as 1 foot per year over the past
Continue reading Depleting groundwater resource of Northern India