After stagnating in the 1950's, agricultural production in west Pakistan rose substantially in the early 1960's because of increased area under cultivation and higher crop yields made possible through greater availability of controlled water and the use of fertilizers. Since the mid-sixties,...

In his comments on my paper [1] Mr. Sarfraz Khan Qureshi tried to show that (a) farmers faced with a choice between cultivating two types of wheat, i.e. local and Mexican varieties, would be guided by the net profitability (revenue) per unit of land; and (b) a varietal shift from local wheat at...