BELATION OF STAND TO YIELD IN HOPS. 



31 



the loss. Applying this method to the records of the acre discussed 

 in the previous paragraphs the results set forth in Table IV were 

 obtained. 



Table IV. — Estimated loss and comparison of actual with estimated yield on 1 acre of 



hops. 



Year. 



Pro- 

 ductive 

 stand. 



Actual 



yield, dry 



weight. 



Estimated 

 yield with 

 full pro- 

 ductive 



stand. 



Estimated loss due 

 to lack of stand. 1 





Quantity. 



Value. 



1909 



Per cent. 

 89.1 

 89.9 

 92.2 



82.2 



Pounds. 



1,487 

 1, 443 

 2,353 

 1,828 



Pounds. 



1,668 

 1,605 

 2,552 

 2,223 



Pounds. 



181 

 162 

 199 

 395 



$29. 32 



1910 



15.87 



191 1 



64.27 



1912 



50.56 







i The estimate of value is on the basis of the farm value of hops in cents per pound, less 6 cents per 

 pound for harvest costs. These farm values are officially estimated by the Bureau of Statistics, U. S. 

 Dept. of Agriculture, as follows: 1909, 22.2 cents; 1910, 15.8 cents; 1911, 38.3 cents; 1912, 18.8 cents. 



When the effect on yield of missing and unproductive hills is thus 

 translated into terms of dollars and cents per acre, the results of 

 inattention to proper cultural methods become very clear. The aver- 

 age loss on this acre for the four years 1909 to 1912 was $40, a 

 sum certainly well in excess of that required to pay for the labor and 

 supervision necessary to maintain a maximum percentage of pro- 

 ductive stand. 



SUGGESTED PROCEDURE FOR MAINTAINING A GOOD STAND. 



Although some growers succeed in maintaining a practically per- 

 fect stand, others may fail to do so owing to causes clearly beyond 

 their control. However, strict attention to the suggestions which 

 follow will eliminate nearly all of those cases of missing or nonpro- 

 ductive hills which are due to carelessness or neglect. Such cases, as 

 is shown on previous pages, are responsible for the greater part of the 

 loss due to defective stand. 



PRACTICAL SUGGESTIONS. 



(1) Just before harvest time mark by means of stakes driven well 

 into the ground all missing, ." bastard," and excess male hills. After 

 harvest dig out these hills and leave an open excavation at least 3 

 feet across and 2 feet deep. 



(2) At pruning time dig out all hills that have died during the 

 winter; then, before replanting, fill the site of all excavated hills with 

 fresh soil mixed with manure. 



(3) If possible, replant early while the soil contains an abundance 

 of moisture to support the growth of the cuttings; cuttings planted 

 in dry soil or sand should be well watered when they are set out. 



[Cir. 112] 



