Evidence from this inquiry concludes that yield enhancement contributed more than 100% change in the total wheat production during the period 1967/70-1971/74 due to the green revolution impact, while the contribution of area was negative. Thereafter, the contribution of yield to total wheat production has been on the decline till 1975/78-1979/82 due to alternating good and bad wheat harvests, whereas during the periods 1979/82-1983/86 and 1983/86-1987/90 a slight yield upsurge occurred due to technological improvements. Area under maize has increased very gradually and there has not been any significant jump in area as research failed to produce suitable high yielding varieties.
Khurshid Ali Qureshi, Buland Akhtar, Muhammad Aslam, Aman Ullah. (1992) AN ANALYSIS OF THE RELATIVE CONTRIBUTION OF AREA AND YIELD TO TOTAL PRODUCTION OF WHEAT AND MAIZE IN PAKISTAN, , Volume 29, Issue 2.
