University of California

Growth regulators affect apple maturity


Warren C. Micke
Ronald H. Tyler
James T. Yeager

Authors Affiliations

Warren C. Micke is Extension Pomologist, University of California, Davis; Ronald H. Tyler is Farm Advisor, Santa Cruz County; James T. Yeager is Staff Research Associate, University of California, Davis.

Publication Information

Hilgardia 31(3):15-15. DOI:10.3733/ca.v031n03p15. March 1977.

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Reports from other apple producing states have shown that two chemical growth regulators, Alar and ethephon, could have a distinct effect on apple maturity. Alar has been reported to increase firmness of fruit, delay maturity, increase red surface color of red varieties, reduce incidence of scald, and reduce pre-harvest drop. Ethephon has been shown to hasten fruit maturity, improve the soluble solids content of fruit, and improve red surface color of red varieties.

Micke W, Tyler R, Yeager J. 1977. Growth regulators affect apple maturity. Hilgardia 31(3):15-15. DOI:10.3733/ca.v031n03p15
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