624 



FUNDAMENTALS OF FRUIT PRODUCTION 



The boundary thus set, therefore, is not necessarily the Hmit of the 

 abihty of the grape to grow; it does, however, mark the Hmit of its abihty 

 to ripen sufficiently for wine making. This line in western Europe is set 

 by summer temperatures. In eastern Europe it is set by winter tem- 

 peratures and does represent approximately the real limit of culture of 

 the vine. 



Table 2 shows the mean monthly temperatures for a number of selected 

 European stations. Some of these, for example, Bordeaux in France, 

 Florence in Italy, Patras in Greece and Odessa in Russia, are either centers 

 of important viticultural industries or they fairly represent such districts. 

 Others, like Bergen in Norway, Plymouth in England and Roscoff in Brit- 

 tany are places where outdoor grape culture for wine is impracticable. 



Table 1.- 



-Mean Monthly Temperatures in Relation to Peach Growing 

 (Degrees Fahrenheit) 



Bordeaux, France (1) . 

 Perpignan, France (1) . 

 Montpellier, France (1) 

 Roscoff, France (1). . . . 

 Plymouth, England (1) 

 Bergen, Norway (1) . . 

 Lyons, France (1) . . . . 

 Berufjord, Iceland (1) . 



Concord, N. H. (2) 



Nashua, N. H. (2) 



Rochester, N. Y. (3) .. 

 Portland, Maine (3) . . 

 Portland, Ore. (3) . . . . 



Pierre, S. D. (3) 



Lincoln, Neb. (3) 



1. Hann. J., Handb. der Klimatologie, Stuttgart (1911). 



2. United States Department Agriculture, Weather Bureau, Bui. Q. (1906). 



3. United States Department Agriculture, Weather Bureau, Bui. R. (1908). 



Yet these latter points have mean winter temperatures above those of 

 some of the grape growing districts and their absolute minimum tempera- 

 tures are likewise higher. However, their mean summer temperatures are 

 comparatively low — too low for the grape to mature its fruit and wood 

 properly; consequently the industry does not flourish there. 



Temperature and the Geographic Range of Apple Varieties. — The 

 same general principles operate to establish limits for the profitable 

 culture of different varieties of the same fruit. Thus, winter tempera- 

 tures at Eastport, Maine, are higher than those at Lewiston, in the same 

 state. The Baldwin apple grows very well around Lewiston but not at 

 Eastport. The difference in suitability of the two places hes evidently 



