SOILS 
21 
t8,ooo pounds an acre. . . . The clay loam is well 
adapted to the growing of onions, giving an average 
yield of about 20,000 pounds an acre.” Vegetables do 
well on other types of the Laredo series when irriga- 
tion is practiced. 
33. Lufkin series. — In Texas, Mississippi, Alabama and 
Louisiana, 1,375,808 acres. Loam and sandy loam are 
adapted to potatoes, cucumbers and other vegetables. 
34. Norfolk series. — Tn the Coastal Plain, 9,612,882 
acres make the Norfolk series the most important truck- 
ing soil. It has a wide general distribution from Long 
Island to Texas. The fine sand is considered the leading 
soil for general trucking; 1,319,164 acres of this type 
have been surveyed. The Norfolk sand is an important 
soil because of its extreme earliness. It is especially val- 
uable for the growing of radishes, spinach and other light 
crops for the early market. In North Carolina, aspara- 
gus is profitable on this soil and it produces excellent 
crops of early potatoes and lettuce in Virginia. The Nor- 
folk sandy loam is largely planted in Irish and sweet 
potatoes and other heavy truck crops. 
35. Orangeburg series. — From North Carolina to 
Texas, 3,486,464 acres of the Orangeburg series are dis- 
tributed. The sandy types are well adapted to cabbage, 
kale, lettuce and the root crops. The heavier types are 
used for celery, onions and cabbage. 
36. Sassafras series. — In Maryland, 407,344 acres. 
Tomatoes are extensively grown in loams and sandy 
loams, which are also well adapted to medium early 
truck. The sandy types are light, well-drained soils and 
well suited to peas, asparagus, Irish potatoes and other 
vegetables. 
37. Susquehanna series. — In Texas, Louisiana, Ala- 
bama, Mississippi, North Carolina and Maryland, 1,495,- 
990 acres. The fine sandy loam is well suited to truck 
crops. 
