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Ecology, Vol. 41, No. 4 790 NOTES AND COMMENT ing harvest maturities for processing vegetables. Food Wang, J. Y. 1958a. An evaluation of some techniques Techno!. 9: 202-209. in agrometeorology. (Methods relating to problems in cultivated plants). Ph.D. Thesis, University of Thornthwaite, C. W. 1952. Temperature relation to Wisconsin. time of maturity of vegetable crops. Presented at the Wang, J. Y. 1958b. More accurate predictions of corn 78th Annual Meeting of the New Jersey State Hort. maturity date. Food Packer 39: 17, 36-37. Soc. Johns Hopkins University, mimeo. ]EN Yu WANG Wang, J. Y. and R. A. Bryson. 1956. A study of phy tometeorological effects on the growth and develop DEPARTMENTS OF METEOROLOGY AND SOILS ment of peas. Dept. Meteorol., University of Wis UNI.VERSITY OF WISCONSIN consin. 165 pp. MADISON, WISCONSIN GENETIC VARIATION IN THE WINTER CHILLING REQUIREMENT FOR DATE OF DORMANCY BREAK FOR ACER RUBRUM INTRODUCTION ment. It ranges from Canada to the Everglades of Florida, and throughout the eastern U. S. Within this Most tree species from the temperate climate must be range the frost-free season varies from less than 100 days exposed for a minimum number of hours to low tempera in northern Maine and Canada
Ecology – Wiley
Published: Jan 1, 1960
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