56 BULLETIN 677, U. S. DEPARTMENT OF AGRICULTURE. 
tion of special truck crops, especially sweet potatoes, tomatoes, can- 
taloupes, asparagus, watermelons, and peppers, than to the produc- 
tion of the majority of general farm crops. Corn and hay may be 
grown in a supplementary way, and several of the sandy loam 
types are inherently suited to corn growing. Other types, not so 
well adapted to general farming under normal conditions have 
been so well supphed with organic manures in the form of green 
cover crops plowed under and also stable manure, generously ap- 
plied, that they are capable of growing corn crops far above their 
normal capacity. 
Both of these areas are representative of considerable regions in - 
southern New Jersey and, so far as reconnoissance’ observations 
could be depended upon, they were but intensified illustrations of 
what may be accomplished upon the same soils wherever they occur 
in the general region. 
HARTFORD AND THOROFARE AREAS CONTRASTED. 
Certain contrasts between the Hartford and Thorofare areas have 
been drawn in part. 
In the Hartford area the dominant soils are the Sassafras loam 
and sandy loam, covering 70.8 per cent of the tilled area. Their oc- 
cupation by crops is comparable to that of the Freehold area, al- 
though differing somewhat in detail. The area as a whole supports 
49.0 per cent of general farm crops and 31.2 per cent of truck crops, 
cf which 18 per cent is credited to Irish potatoes. Other truck crops, 
aside from tomatoes and cabbage, both of which are suited to loam 
and sandy loam soils, are decidedly unimportant, although the other 
soils of the area are capable of truck-crop occupation. | 
In the Thorofare area 69.3 per cent 1s occupied by the Sassafras sand. 
The Sassafras sandy loam is the most retentive soil found within the 
limits of the survey. It occupies 18.3 per cent of the cropped area. 
The truck crops not only cover 62.9 per cent of the occupied land of 
the Thorofare area, but four of them—asparagus, sweet potatoes, to- 
matoes, and cantaloupes—lead all other crops in acreage, ranking 
in extent in the order named. The acreage planted to asparagus 
nearly equals that given to the combined area of corn and hay. 
Such facts mark the Thorofare area as one of the most highly 
specialized trucking areas in southern New Jersey. This specializa- 
tion has been made possible by the existence there of the Sassafras 
sand. 
The general facts shown by the comparison of the Hartford and ~ 
Thorofare areas are: (1) The areas are equally well situated with 
respect to climate, markets, and transportation. (2) Loam and 
sandy loam soils dominate the Hartford area and general farm crops 
are there more extensively grown than truck crops. Among the lat- 
ter, potatoes and tomatoes are by far the most important. (3) Sand 

