10 



SOME CONDITIONS INFLUENCING THE YIELD OF HOPS. 



respectively: (from column 3) 15, 12, and 15 hills produced 2.5, 3, 

 and 3.5 pounds each, respectively; (from column 5) 14, 18, and 18 

 hills produced 7, 7.5, and 8 pounds each, respectively. From column 

 1 it appears that no 1-vine hill produced more than 4 pounds, and 

 from column 6 that relatively few 6-vine hills produced less than 

 6.5 pounds each. The balance of evidence, therefore, is entirely in 

 favor of a much laroer total production when 6 vines to each hill 

 are trained than with a smaller number. 



COMPARISON OF ACTUAL WITH POSSIBLE YIELDS ON 1 ACRE. 



The actual yield of hops on the acre studied was 5,207.5 pounds, 

 and the mean yield per hill 6.104+ pounds. Had there been a full 

 stand of 957 bearing hills, with this same average yield per hill, the 

 production on the acre would have been 5,841.5 pounds. This is an 

 increase of 12.1+ per cent over the actual yield. 



In a similar manner, the possible yield per acre has been calculated 

 for each number of vines trained per hill. For comparison the results 

 have been brought together in Table IV, which follows: 



Table IV. I'os.'^iblc ijUld on 1 acre of hops, accordlnu to ilic number of vines 



traiitcd. irilli ihr i-orrvsixDtiJiun increase or decrease of ike possible over the 

 actual yiehl. 



" Decrease. 



Incrrasc 



N'umboi- of hills loo f;uiali for cousideration. 



The average yield to the hill was determined in each case by divid- 

 ing the number of pounds produced by all of the hills having the 

 same number of vines by the number of such hills. The possible 

 yield was then obtained by multiplying the average yield per hill 

 by 957, the number of possible bearing hills to the acre. It will be 

 observed that the possible yield in the case of the hills having 1, 2, 

 and 3 vines, respectively, is very much less than the actual yield, 

 which wan 5,207.5 pounds. Also, in the case of the hills having 4, 5, 

 and 6 vines, respectively, the possible yield is far in excess of the 

 actual, being 05.2+ per cent greater for the 6-vine hills. 



[Cir. 56] 



