COST OF PRODUCING APPLES IN YAKIMA VALLEY. Lz 
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 packed boxes, or 
5.5 boxes per tree. These orchards averaged 67 trees per acre. 
TaBLE XI.— Yvelds of 120 orchards of varying acreages and different cultural methods in 
Yakima Valley. 
Clean-cultural management. Mulch-crop management. 
Acresin orchard. | Num-| 4... |Packed| myees | Boxes | NUM: | aver. |Packed| qrees| Boxes 
ber of boxes ber of boxes 
rae age per per per rae age per per per 
| erie age. Bae acre tree ane age. acre acre. tree. 
: 
AES 3 Lea Sse dy oe 44 12.8] 496.8 Wie 6. 43 DD IDA 8) Pe EB 7 73.8 5. 90 
Gxbonl OR See eee 19 IDSOS ST Al4e3 74.2 9. 08 19 12 379 66.6 5. 63 
DiIstOI20 eee 12 12.3 | 348.3 67.1 5.19 4 13.8 | 304.2 80. 4 3. 78 
Mota Re 75 IPA 7; 452.2 74.9 6. 04 45 12.4 398. 1 (alee) 5. 58 
Combined management. 
Acres in orchard. l 
Number | 4 verace | Packed | ‘Trees Boxes 
ofrec- | “V7 OS* |boxesper| per per 
ords. int acre. acre. tree. 
TA GOD Soi Se Diet ce a RO a eee 66 12.7 476.3 76. 2 6. 25 
CATO YEO) Os ee ae a ae pe ee 38 DNS 394.7 70. 4 5. 61 
IHU GHO) DD es cee a ps ee oa a 16 12.7 337.3 70.3 4.80 
ND 0, 2 eee 120 12.6| 431.9 73.6 | 5. 86 
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 
