231 Pork Production 



worm-expelling properties of the pumpkin seed, and 

 the succulence of the two crops, — the reasons for the 

 superiority of this combination are clear." Soybeans gave 

 good results again in 1919, but the returns from the 

 Canadian fields pea and the hairy vetch were not a credit 

 to these crops. The fact that Canadian field peas are 

 a cool weather crop, requiring a very short growing 

 season, makes it ill-adapted for planting in corn. The 

 yield of vetch was luxurious, but the unpalatable nature 

 of the plant for hogs resulted in insufficient consump- 

 tion for good gains, and the heavy yield materially 

 reduced the supply of moisture and plant-food avail- 

 able for the corn. The authors of the experiment con- 

 sidered hairy vetch an utter failure for "hogging-down" 

 purposes. 



In 1911 four fields of com were again "hogged-down," 

 two of which only contained forages. Soybeans were 

 grown in one and rye in the other. The results were 

 very much in favor of the green rye when supplemented 

 by the addition of a small quantity of meat-meal. The 

 large amount of pork produced by an acre of the corn and 

 rye forage was in part the result of the smaller yield of 

 com in the lot containing the soybeans. The pigs receiv- 

 ing no supplement, either in the form of a forage or a 

 concentrate, made extremely unsatisfactory gains. The 

 lot which received approximately 10 per cent as much 

 meat-meal daily as it ate of com gained nearly three 

 times as rapidly, and from the same area of corn pro- 

 duced more than double the quantity of pork. It is 

 apparently just as necessary properly to supplement 

 standing com as it is corn fed in the ordinary way. The 

 effect of growing the forage in with the corn on the yield 

 of corn is also suggested by these results. 



