8 BULLETIN 665, U. S. DEPARTMENT OF AGRICULTURE. 
Of 68 crops of lettuce produced on 25 farms, 45.5 per cent of the 
crops were successful. The average yield harvested during the 
season of 1914—15 was 221 hampers per acre. (See fig. 5.) 
Onions were produced on 18 farms, and more than half (61.5 per 
cent) of the crops were successful. The average yield of onions is 
approximately 260 bushels per acre. This crop is best adapted to the 
lighter textured soils of the western part of the region. 
Irish potatoes were raised on 24 farms, records being secured on 
69 crops. Forty-three of these crops were profitable. Potatoes yield 
on the average less than 100 bushels per acre. 
Fig. 5. — Lettuce is an important truck crop. This field has been cut over once. Two 
more cuttings will be made. 
Snap beans and tomatoes were produced on 22 farms, 65 crops of 
beans and 58 crops of tomatoes being recorded. Fifty-one per cent 
of the bean crops brought profits, and 43 per cent of the tomato crops 
succeeded. 
Only 10 farms produced cantaloupes, 20 crops being raised. Only 
4 of these crops were profitable. 
"While the profits from the successful truck crops average greater 
than the losses from the failures, it appears that in general any one 
truck crop is successful only about half the time. Potatoes and 
onions appear to be somewhat more likely to succeed than others, 
while cantaloupes are seldom successful. 
Other truck crops, such as spinach, table beets, kohlrabi, garlic, 
peppers, eggplant, okra, and turnips, are produced quite extensively 
and are successful to about the same extent as those crops above 
mentioned. It not infrequently happens that some one crop comes 
on the market at a time when the product is scarce, and under such 
conditions very large profits may be made. For some crops it is 
