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- Author or Editor: David P. H. Tucker x
Abstract
Citrus is a major international tree fruit crop. In the United States, citrus production surpasses the combined production of apples, peaches, cherries, pears, nectarines, apricots, plums, avocados, olives, figs, and dates (14). As one of the major industries in Florida, agriculture is the 2nd largest generator of income in the state. Citrus is the primary agricultural industry in Florida, and Florida is the largest producer of citrus in the United States.
Evaluation ratings of cold injury following a freeze on December 24 & 25, 1989, showed differences among scion cultivars and rootstock. `Star Ruby' grapefruit (Citrus paradisi Macf.) and `Fallglo' citrus hybrid, a cross of Bower mandarin citrus hybrid × Temple tangor (C. temple Hort. ex Y. Tanaka) were the most severely damaged scion cultivars. `Rohde Red' valencia orange selection 472-11-43. [C. sinensis (L.) Osbeck]. was the least damaged scion cultivar. Scions budded to Cleopatra mandarin (C. reshni Hort. ex Tan.) and FL 80-18 citrumelo [C. paradisi × Poncirus trifoliata (L.) Raf.] rootstock were damaged more than on other rootstock. Scions budded to smooth flat seville (C. aurantium?) and P. trifoliata × Ridge pineapple sweet orange selection 1573-26 [C. sinensis (L.) Osbeck] had the least injury. Analysis comparing replications showed the greatest damage to be in the north side of the planting.