COST OF PRODUCING APPLES IN YAKIMA VALLEY. 



17 



is proportionately small. The trees in the small orchard usually 

 get more care and individual attention than those in the big orchard. 



The average yield of the orchards studied is here presented regard- 

 less of the size of orchard, variety of apple, and the age of the trees, 

 7 years and over, without consideration of the year. 



The average yield per acre in the North Yakima district in orchards 

 under clean-culture management was 475 packed boxes, or 6 packed 

 boxes per tree. In the orchards considered 79 trees per acre was 

 the average. The average yield per acre in orchards under the 

 same method of management in the Zillah district, with an average 

 of 69 trees per acre, was 421 packed boxes, or 6.1 boxes per tree. 



The average yield per acre in the orchards of the North Yakima 

 district under mulch-crop management was 434 packed boxes per 

 acre, or 5.7 boxes per tree. These orchards averaged 76 trees per 

 acre. The average yield per acre in the Zillah district for orchards 

 under the same system of management was 367 j^acked boxes, or 

 5.5 boxes per tree. These orchards averaged 67 trees per acre. 



Table XI. — Yields of 120 orchards of varying acreages and different cultural methods in 



Yakima Valley. 





Clean-cultural management. 



Mulch-crop management. 



Acres in orchard. 



Num- 

 ber of 

 rec- 

 ords. 



Aver- 

 age 



age. 



Packed 



boxes 



per 



acre. 



Trees 

 per 

 acre. 



Boxes 

 per 

 tree. 



Num- 

 ber of 

 rec- 

 ords. 



Aver- 

 age 



age. 



Packed 



boxes 



per 



acre. 



Trees 

 per 

 acre. 



Boxes 

 per 



tree. 



lto5 



44 

 19 

 12 



12.8 

 12.9 

 12.3 



496.8 

 414.3 

 348.3 



77.3 

 74.2 

 67.1 



6.43 

 5.58 

 5.19 



22 

 19 

 4 



12.5 



12 



13.8 



435.2 



375 

 304.2 



73.8 

 ■66.6 



80.4 



5.90 



6 to 10 



5.63 



11 to 20 



3.78 







Total 



75 



12.7 



452.2 



74.9 



6.04 



45 



12.4 



398.1 



71.3 



5.58 









i 



Combined management. 



Acres in orchard. 



Number 

 of rec- 

 ords. 



Average 

 age. 



Packed 



boxes per 



acre. 



Trees 

 per 

 acre. 



Boxes 

 per 

 tree. 



1 to 5 ■ 



66 

 38 

 16 



12.7 

 12.5 



12.7 



476.3 

 394.7 

 337.3 



76.2 

 70.4 

 70.3 



6.25 



6 to 10 



5 61 



11 to 20 



4.80 







Total 



150 



12.fi 



431 9 



73 fi 



K Rfi 

























The orchards under clean cultivation show a slightly larger yield 

 than those under mulch-crop management. The difference is not 

 large, however, when considered on a comparable basis. There is 

 an average yield of 0.3 box more per tree under clean-cultural than 

 under mulch-crop management in the Yakima district and 0.6 box 

 more per tree in the Zillah district. Assuming, that there are the 

 same number of trees per acre — for example, 70 — there would be. 



