70 BULLETIN 677, U. S. DEPAETMENT OF AGEICULTUEE. 



present or to place the crop where small depressions accumulate 

 seepage waters from higher lying areas of sandy loam. Unless the 

 land is actually flooded, the cabbage crop makes good growth upon 

 these moist lands. 



COMPARISON OF EXPRESSED PREFERENCE WITH RESULTS OF 

 DETAILED SURVEYS. 



A general comparison may be made between the facts as observed 

 in the four detailed areas where distinct soil types and their crop 

 areas were mapped and the preferences as expressed by southern 

 New Jersey farmers as summarized and tabulated. The two sets 

 of results are presented in detail in Tables XI, XII, and XIII. 



Irish 'potatoes. — The crop maps show that 36.3 per cent of the 

 Sassafras loam is occupied by Irish potatoes and that this is the only 

 important truck crop grown on the type. The replies to inquiries 

 show that 66 per cent of the farmers prefer a loam or heavy loam soil 

 for the crop, while 34 per cent wish a sandy loam. The Sassafras 

 sandy loam carried the only other important acreage in potatoes in 

 the mapped area. 



Sweet "potatoes. — The largest acreages of this crop were mapped 

 on the Sassafras coarse sandy loam, the Sassafras sandy loam, and 

 the Sassafras sand. The sand and coarse sandy loam group of soils 

 carried 509.2 acres of sweet potatoes out of a total of 720.1 acres 

 mapped on the dominant soils. The Sassafras sandy loam carried 

 163.4 acres of the remainder. The expressed soil preferences show 

 sand preferred by 61 per cent of sweet-potato growers and sandy 

 loam by 39 per cent. The facts from the two sources are well in 

 accord. 



Tomatoes. — In the case of this crop the two sets of facts appear 

 to be at some variance. It is held, however, that a fifth survey, made 

 in the vicinity of Salem, N. J., would have corrected this seeming 

 discrepancy, since the Sassafras loam is extensively used in that 

 vicinity for the piroduction of canning tomatoes. The Freehold area 

 produced no tomatoes. The Hartford area included areas grown 

 both for market and for canning. The Thorofare and Swedesboro 

 areas included areas of tomatoes grown almost exclusively for mar- 

 ket, and only the residue of the crop after the early tomatoes have 

 been shipped is normally sold for canning. Thus the figures from 

 the four detailed areas thtow truck crop tomatoes into undue 

 prominence. 



It appears from the tabulated areas that slightly more than one- 

 half of all the area in tomatoes was found on the sand and coarse 

 sandy loam soils. Outside of this group, the Sassafras sandy loam 

 was the only type carrying an important acreage, 171 acres in all. 



In the tabulated answers to inquiries, 52 per cent of the replies ex- 



