A unique plant growth regulator registered for use on many citrus varieties, ALCO CITRUS FIX delivers a high benefit-to-cost ratio. Major benefits include providing pre-harvest fruit-drop control in navel and Valencia oranges, grapefruits, lemons, tangelos and other citrus hybrids. Fruit size is also significantly improved when ALCO CITRUS FIX is applied on navel or Valencia oranges and grapefruit. Adding ALCO CITRUS FIX to oil spray mixtures counteracts leaf and fruit drop problems associated with such use. It is labeled for post-harvest use on lemons for maintaining healthy buttons and for preventing Alternaria rot, and may be applied through ground or aerial spray equipment. Through special partnership between the University of California, Riverside and the California Citrus Quality Council, ALCO CITRUS FIX can also be applied to mandarins and mandarin oranges in California to improve fruit size (EPA SLN No. CA-040027).