Research was conducted by University of Idaho affiliated horticulturists answered concerns raised about the water shortage and how often to irrigate orchards. The types of trees used in the study were; Red Delicious, Rome Beauty and Jonathan apple trees and Italian prune trees.
To view the article, click on the link attachment.
Oct.-Nov. 1977 Vol. 1, Issue 17 Pages 6-7
W.J. Kochan Professor of Plant Physiology Dept. of Plant and Soil Sciences University of Idaho