PASTURE AND GRAIN CROPS FOR HOGS. 



17 



is low, the soil is frequently so light that it is subject to blowing and 

 drifting. In the districts where the precipitation is heaviest, on the 

 other hand, the soil is a dark, fertile, silt loam. Owing to these varia- 

 tions crop production varies widely in the wheat belt. For conven- 

 ience in discussing the cropping and feeding systems which may be 

 used for hogs, the wheat belt is divided into (1) the subhumid or 

 moister districts and (2) the arid and semiarid districts. There is 

 no distinct line of demarcation between them, for they gradually blend 

 into one another. 



Fig. 6.— Afield of artichokes in the Willamette Valley, Oreg., that is ready for the hogs. When the lower 

 leaves began to die, sheep were turned in. They stripped off the leaves as high as they could reach. 

 Cattle would consume the rest of the leaves. 



Subhumid or Moister Districts. 



The more humid portions of the wheat belt are generally situated 

 near the mountains. The annual rainfall is usually sufficient to 

 grow alfalfa successfully without irrigation. 



USE OF VARIOUS PASTURE CROPS. 



Table IV. — Pasture crops for the subhumid districts. 



Crops. 



When planted. . 



Approximate dates when used. 



Number 

 of hogs an 

 acre will 

 pasture. 







October 15 to November 15, 

 March 15 to June 1. 



April 10 to December 1 



April 15 to November 15 



June 15 to December 1 



July 10 to November 15 



June 1 to November 15 



September 15 to November 15. 



5 to 8 



Clover 





8 to 15 



Alfalfa 





8 to 15 



Kale or rape 



April and May 



8 to 15 



Rape and clover. . . 



May! 



6 to 14 



Winter wheat 



Early in May 



6 to 15 



Wheat in corn 



July 15 to 20 (at last cultiva- 

 tion of corn). 



6 to 12 



Stubble field 













