RYE 159 



increases as the climate becomes cooler. Winter rye 

 requires a total of 1700 to 2400 C., and spring rye a total 

 of 1400 to 1800 C. Rye has a greater water requirement 

 than any other cereal except oats. 



151. Distribution in other countries. (1) The com- 

 mon white chaff varieties of rye, usually winter varieties, 

 are grown chiefly throughout Russia, Germany, and 

 Austria-Hungary. (2) Spring rye, usually with small 

 kernels (" yaritsa "), is very common in Siberia, particu- 

 larly in Irkutsk government and the Transbaikal terri- 

 tory. Spring rye is also grown in northern Russia, includ- 

 ing Finland, and in the Scandinavian peninsula. (3) In 

 a general way the dark small-kerneled varieties are adapted 

 in the northern and drier regions, and the varieties with 

 colored kernels in southern and more humid regions. 

 Examples are the Ivanov from Russia and the Abruzzes 

 from Italy. (4) The red-chaff and dark brown-chaff 

 varieties of rye come from Transcaucasia. (5) Mon- 

 strous rye with composite spikes comes from Turkey. 



