84 



A TEXT-BOOK OF GRASSES 



115. The Pacific slope. — In the great interior valley 

 of California and northward through eastern Oregon, 

 eastern Washington and northern Idaho, the rainfall comes 

 mostly in the winter, this season being comparatively 

 mild. Under these conditions the winter season is adapted 

 to the growth without irrigation of annual crops such as 

 grain. The summers are hot and dry, and irrigation is 

 necessary for summer crops such as alfalfa. The region 

 to the northwest of this is humid (Par. 110). 



116. The relative importance of the different kinds 

 of forage in the different regions of the United States. — 

 The production (tons) of the kinds of forage mentioned by 

 the thirteenth census report is given in the following 

 table, each being arranged by states. The production of 

 each kind of forage in the United States is shown in Figs. 

 2 to 10. 



TABLE XVII 



The Production (Tons) of Hay and Forage for 1909, by the Ten 



Leading States, of Each Kind of Forage 



Timothy 



1. Ohio 2,348,660 



2. Iowa 1,952,956 



3. Illinois 1,947,572 



4. Indiana 1,442,218 



5. Missouri 1,334,556 



1. Iowa . . . . 



2. New York . 



3. Wisconsin . . 



4. Michigan . . 



5. Pennsylvania 



Timothy and clover mixed 



. 3,732,186 6. Missouri . . . . 1,630,211 



. 3,215,021 7. Minnesota .... 1,433,075 



. 2,477,311 8. Ohio 1,346,347 



. 1,991,618 9. Illinois 1,123,254 



. 1,830,852 10. Vermont .... 628,098 



Clover alone 



1. Illinois 539,790 



2. Indiana 314,818 



3. Missouri 309,209 



4. Ohio 239,492 



5. Michigan 216,862 



6. Tennessee 201,926 



7. Iowa 195,579 



8. Wisconsin 193,786 



9. New York 114,864 



10. Minnesota 106,334 



