Download or read book Sustaining crop water productivity in rice-wheat systems of South Asia: A case study from the Punjab, Pakistan written by Waqar Ahmed Jehangir and published by IWMI. This book was released on 2007-04-23 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: This working paper presents the results of the Pakistan Component of the Rice-Wheat Consortium Project on ‘Sustaining the rice-wheat production systems of Asia’. Rice and wheat crops are main nsources of human food and substantially contribute to feeding livestock. The advent of the green revolution in the 1960s resulted in a tremendous increase in the production of these two cereal crops and the rice-wheat cropping system emerged as a very important source of food supply in South Asia. Recent symptoms of stagnant growth rates in productivity and the degradation of the resource base pose serious challenges to future food security and natural resources management in the region. The growing scarcity of water in the region