Pumping up productivityIRRIGATIONOur Bureau / New Delhi February 28, 2006Proposing a step up of Rs 1,494 crores over the revised estimates for 2005-06 in the Central Plan outlay for agriculture and allied activities, finance minister P Chidambaram identified four sectors as the thrust areas for higher investment -- irrigation, credit, diversification and creation of market for agricultural produce.The total outlay for irrigation in 2006-07 had been increased to Rs 7,121 crores, including the Centre