The Effects of Aqueous Sprays of NH4F on ‘Early Improved Elberta‘ Peaches1,2

in HortScience
Authors:
T. J. FacteauMid-Columbia Experiment Station, Hood River, Oregon

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S. Y. WangMid-Columbia Experiment Station, Hood River, Oregon

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Abstract

Aqueous sprays of NH4F applied to ‘Early Improved Elberta’ peach trees significantly increased the % of abnormal fruits. Tissue firmness was increased on the dorsal side but decreased on the suture side. Suture tissues contained more F than dorsal tissues and both had higher F levels as the F spray concn increased. The climacteric of treated fruits was initiated before the untreated fruits at every sampling date where a climacteric occurred. Both malic and citric acids were decreased in the suture tissues of F treated fruits.

Contributor Notes

Received for publication June 5, 1972. Technical Paper No. 3 370. Oregon Agricultural Experiment Station.

This research was supported in part by Contract No. CPA 70-130 from the Division of Ecological Effects Research of the Environmental Protection Agency.

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