28 BULLETIN 1005, U. S. DEPAETMEXT OF AGRlCULTl^RE. 
Approximately one-half of the total area mapped is used for the 
growing of general farm crops and truck crops; the remainder is in 
iorest, gardens and grounds, orchards, and the experimental plots, or 
else is unoccupied for farming pm-poses. 
The truck crops occupy about one-third of the total area, both in 
fall and in spring. Among these crops, strawberries cover the largest 
acreage, except during the winter months, when the acreage in spin- 
ach is slightly larger. 
The considerable acreage given to cabbage growing is notable. 
The subordinate position of potatoes in both spring and fall and of 
kale among the fall crops is marked. 
The growing of snap beans, interplanted with strawberries, is a 
feature of the cropping on the coarse sandy loam soils. 
The relatively large area given to forage "and grain crops in the 
spring is in somewhat marked contrast with the conditions shown by 
the June crop map of the Churchland area. The larger area of heavy 
soils in the Diamond Springs area accounts for this, in part. The 
fact that corn frequently succeeds spinach, cabbage, and such straw- 
berry beds as are plowed out after finishing their bearing period also 
influences the acreage of corn. 
Comparison of the Churchland and Diamond Springs Areas. 
Although the Churchland and Diamond Springs areas lie wdthin a 
few miles of each other, under closely similar climatic conditions and 
with almost equal accessibility to shipping points, the two areas 
sho\v some notable contrasts in the character of cultivation, especi- 
ally with respect. to the growing of truck crops. 
The Churchland area is dominated by fine sandy loam soils which 
occupy over 95 per cent of its total area. The Diamond Springs area 
is marked by a considerable diversity of soil types. The loam soils 
cover 42 per cent of the total area; gravelly loams occupy IS per cent; 
coarse sandy loams cover 30 per cent, and one fine sandy loam soil 
comprises but 8 per cent of the total area mapped. Thus, nearly 60 
per cent of the total area consists of rather heavy soils. 
In the Churchland area two-thirds of the upland area consists 
of natiu-ally well-drained soils, while the other types have been 
decidedly modified with, regard to drainage by the tile underdrainage. 
The soils of the Diamond Springs area may be grouped into three 
classes with respect to their. natural drainage. The Sassafras loam, 
fine sandy loam, and coarse sandy loam and the Norfolk coarse 
sandy loam are naturally well drained. These four types occupy 
43 per cent of the total area. The Norfolk loam and gravelly loam 
are only moderately well drained in their natural condition, and 
little artificial drainage has been installed. They cover 40 per cent 
of the total area. The vSuffolk loam and gravelly loam are (lis- 
