20 VEGETABLE GARDENING 



28. Soil series. — ^"It has been found that in many parts 

 of the United States the soil classes of a given set are so 

 evidently related through source of material, method of 

 formation, topographic position, and coloration that the 

 different types constitute merely a gradation in the tex- 

 ture of an otherwise uniform material. Soils of different 

 classes that are thus related constitute a series. A com- 

 plete soil series consists of material similar in many other 

 characteristics, but grading in texture from stones and 

 gravel on the one hand, through the sands and loams, 

 to a heavy clay on the other." Ibid., p. 19. 



29. Atlantic and gulf coastal plains. — This soil province 

 includes all of Delaware and Florida and parts of Long 

 Island, New Jersey, Maryland, Virginia, North Carolina, 

 South Carolina, Georgia, Alabama, Mississippi, Louis- 

 iana and Texas, and the following soil series are impor- 

 tant to vegetable growers: Bastrop, Crockett, Laredo, 

 Lufkin, Norfolk, Orangeburg, Portsmouth, Sassafras, 

 Susquehanna and Webb. Of the miscellaneous trucking 

 soils of this province the following may be mentioned : 

 Collington sandy loam, Hempstead loam and muck and peat. 



30. Bastrop series. — In Texas, 58,432 acres. (United 

 States Bureau of Soils, Bui. 55, p. 97.) Melons and pota- 

 toes do well on the silt loams. The fine sandy loams are 

 exceptionally well adapted to melons, potatoes, peanuts 

 and vegetables when irrigated. 



31. Crockett series. — In Texas, 29,504 acres. The grav- 

 elly loam is well adapted to early vegetables. 



32. Laredo series. — In Texas, 55,040 acres. Ibid., p. 

 loi : "Laredo silty clay loam, mapped in the Brownsville 

 area, Texas, is a very productive soil and well adapted 

 to growing early vegetables. . . . Lettuce, melons, 

 cauliflower, beets, peas, cabbage, onions, eggplant, cu- 

 cumbers, tomatoes, carrots and both sweet and Irish 

 potatoes are all profitably grown under irrigation. Cab- 

 bage is the principal crop and the average-yield is about 



