Introduction and Importance: Citrus cultivars are grown in varying quantities in countries with tropical or sub tropical climate. Citrus stands first in area and production among the worlds tree fruits. In Pakistan also, citrus fruits are the most important fruit crops grown on the area of 160,000 hectares with production of 1.5 MMT annually. Citrus fruit is grown in all four provinces of Pakistan but Punjab produces over 95% of the crop because of its greater population, favorable growing conditions and adequate water. Citrus is divided into different groups Sweet oranges, Mandarine, Grape fruit, Lemon and Lime which are being ...
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