Ethrel speeds growth and maturity of figs
AuthorsJulian C. Crane
M. M. Nelson
Authors AffiliationsJulian C. Crane is Professor and Po-mologist in the Experiment Station; Nasr Marei is Research Assistant, Department of Pomology, University of California, Davis; M. M. Nelson is Laboratory Technician, Department of Pomology, University of California, Davis.
Hilgardia 24(3):8-10. DOI:10.3733/ca.v024n03p8. March 1970.
Exposure of plants to ethylene gas has brought about various responses, including flower induction, change in direction of growth, accelerated fruit ripening, leaf and fruit abscission, and hastened seed germination. Research in 1967 revealed that fig fruits were stimulated to grow rapidly and mature early when exposed to an atmosphere containing 5 ppm of ethylene. The cost and inconvenience of confining a gas such as ethylene to fig trees makes impractical its application to induce early fruit maturity. On the other hand, application of a spray that produces effects similar to those of ethylene would be of great value to the fig grower. When applied as a water spray, the proprietary compound Ethrel (2-chloroethylphosphonic acid) penetrates the leaves and other plant organs and then decomposes to form ethylene, chloride, and phosphate. The results of experimentation during 1968 and 1969, described in this report, show clearly that the effects of Ethrel on fig fruit growth and maturation are like those of ethylene.
Also in this issue:— a prescription for pest control
Mini-streams aid pollution studies at U.C. Davis
Water stress during flowering of cotton
Corporate farming in California
Foliar sprays for correcting zinc deficiencies in walnuts
Insects in cotton as affected by irrigation and fertilization practices
Sweet cherry pollination for Early Burlat and Moreau
Reclamation of an alkali soil of the Hacienda series