Results reported here, along with the results of similar studies conducted both in the field and in environmentally controlled glasshouses, emphasize the importance of climate in the production of marketable citrus fruits. The most important market criteria such as size, rind color, and maturity are determined to a large degree by the climate in which the trees are grown. These data can be useful in determining the most suitable varieties for trial in new areas.

Assistance was also provided by R. L. Blue, D. C. Elfving, C. N. Roistacher, and R. L. Wagner.