SOILS 21 



18,000 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. — In 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. 



