A study was conducted during the year 2009 to find out the factors responsible for decline in guava ( Psidium guajava) yield. For this purpose three districts Sheikhupura, Kasur and Faisalabad, Pakistan were selected being core area for guava cultivation. To examine impact of various inputs on guava production, the Cobb-Douglas production function model was used. Factors which caused decline in guava yield were found to be physical beating of flowers, excessive intercropping and number of sprays. The physical beating of flowers (-0.317 coefficient value) and intercropping (-0.200) proved as two major depressing factors. Intercropping in both summer and winter seasons went in a long way in depressing yields. Flower shedding by beating with clubs proved to be more significant (-0.317). It was found that productivity decline can be arrested as well as be reversed with adequate number of irrigations, proper use of fertilizers and adopting good management measures.
