The BrLi.ETix 



31 



run together. The turning under of green manuring crops, such as 

 clover, cowpeas, or rye, or probably barnyard manure, would supply the 

 needed vegetable matter, add nitrogen to the soil, and make it more 

 loamy and more retentive of moistux-e, thus greatly increasing the 

 yields. Deeper plowing and the addition of lime are also recommended. 

 The Alamance silt loam is best suited to the growing of wheat, rye, 

 oats, corn, grasses, and cowpeas. Cotton yields are low, the average 

 being about one-fourth or one-third bale per acre. Many of the bolls 

 fail to mature. Sorghum cane, sweet potatoes, Irish potatoes, and 

 garden vegetables can be profitably grown. Corn yields from 12 to 50 

 bushels, wheat from 8 to 20 bushels, oats from 12 to 30 bushels, and 

 sweet potatoes from 40 to 100 bushels. 



The following table gives the average results of analyses of soil and 

 subsoil of Alamance silt loam : 



CHEMICAL ANALYSIS. 



MECHANICAL ANALYSIS. 



Surface soil- 

 Subsoil 



Fine 



Gravel, 



Pei Cent 



1.9 

 0.6 



Coarse 



Sand, 



Per Cent 



2.9 

 0.9 



Medium 



Sand, 

 Per Cent 



1.4 

 0.4 



Fine 



Sand, 



Per Cent 



4.1 

 0.9 



Very Fine 



Sand, 

 Per Cent 



13.0 

 13.9 



Silt, 

 Per Cent 



63.1 

 33.6 



Clay, 

 Per Cent 



13.7 

 49.1 



ALAMANCE SILT LOAM, SHALLOW PHASE 



This shallow phase is shown on the map by cross lines on color of 

 Alamance silt loam. It differs from that type in that the yellow silty 

 clay subsoil extends to a depth of 10 to 20 inches Avhere the underlying 

 slate rock is reached. In places the rock occurs immediately under the 

 surface soil, and even outcrops of it are common. Locally there is a con- 

 siderable quantity of fine slate particles and quartz rock on the surface. 



This phase lies within or joins the silt-loam type in the eastern part 

 of the county. It occupies the more rolling areas of the slate belt and 



