REFERENCES
- Bartram , R. D. 1969 . Brief history of cold injury to apple trees in North Central Washington, December, 1969 . Washington State Horticultural Association: Proceedings , 65 : 157 – 160 .
- Ketchie , D. O. , Beeman , C. H. and Ballard , A. L. 1972 . Relationship of electrolytic conductance to cold injury and acclimation in fruit trees . Journal American Society Horticultural Science , 97 : 403 – 406 .
- Levitt , J. 1956 . The Hardiness of Plants , New York : Academic Press .
- Nilsen , E. T. and Orcutt , D. M. 1996 . The Physiology of Plants Under Stress , New York : John Wiley .
- Raese , J. T. 1977 . Induction of cold hardiness in apple tree shoots with ethephon, NAA, and growth retardants . Journal American Society Horticultural Science , 102 : 789 – 792 .
- Raese , J. T. 1983 . Conductivity tests to screen fall-applied bioregulators to induce cold hardiness in young ‘Delicious’ apple trees . Journal American Society Horticultural Science , 108 : 172 – 176 .
- Raese , J. T. 1996 . Calcium nutrition affects cold hardiness, yield, and fruit disorders of apple and pear trees . Journal Plant Nutrition , 19 : 1131 – 1155 .
- Raese , J. T. and Drake , S. R. 1991 . Calcium sprays help control fruit disorders of ‘d’Anjou’ pears . Good Fruit Grower , 42 : 25 – 27 .
- Raese , J. T. and Drake , S. R. 1992 . Calcium sprays important in winter freeze damaged pears . Good Fruit Grower , 43 : 11 – 12 .
- Stahly , E. A. and Benson , N. R. 1976 . Calcium levels of ‘Golden Delicious’ apples as influenced by calcium sprays, 2,3,4-triiodobenzoic acid and other plant growth regulator sprays . Journal American Society Horticultural Science , 101 : 120 – 122 .
- Washington State University . 1975 . “ A regional analysis of injury to deciduous fruit trees by the freeze of December, 1972. Agriculture Research Center, Washington State University Bulletin No. 813 ” . Pullman, WA : Washington State University .