1Received for publication March 21, 1977. Published with the approval of the Director of the Utah Agricultural Experiment Station as No. 2181, of the Journal Series. This project was funded in part by the Four Corners Regional Commission.
2Department of Soil Science and Biometeo - ology.
3Utah State Climatologist.
4Department of Plant Science.
1018 Duke Street
Alexandria, VA 22314
© 2018-2023 American Society for Horticultural Science
Character limit 500/500