The Bulletin. 17 



No. 11— 



Acid phosphate, 14 per cent phosphoric acid 1,300 pounds 



Tankage, 11 per cent nitrogen 600 pounds 



Muriate of potash, 50 per cent potash 100 pounds 



2,000 pounds 



This mixture will contain: available phosphoric acid, 9.1 per cent; 

 potash, 2.5 per cent; nitrogen, 3.3 per cent (equal to ammonia, 4.01 

 per cent). 



No. 12— 



Acid phosphate. 14 per cent phosphoric acid 1,100 pounds 



Dried blood, 13 per cent nitrogen 325 pounds 



Cotton-seed meal, 6.59 per cent nitrogen, 2.5 per cent phos- 

 phoric acid, and 1.5 per cent potash 300 pounds 



Kainit, 12.5 per cent potash 275 pounds 



2,000 pounds 



This mixture will contain: available phosphoric acid, 8 per cent; 

 potash, 2 per cent; nitrogen, 3.1 per cent (equal to ammonia, 3.76 

 per cent). 



ADAPTATION. 



We generally think of wheat as a plant suited to cold climates. 

 The great bulk of the crop is grown where the winters are very cold 

 and where the summer heat is seldom excessive. The most noted 

 exceptions are the wheatfields of California, Egypt and India. 



The wheat industry is gradually spreading northward in this 

 country, first as a spring, then as a fall-sown crop. Spring wheat 

 once grew over Kansas, Nebraska and Iowa, where winter wheat is 

 now grown almost altogether. In the Dakotas and Minnesota spring 

 wheat was grown exclusively till a short while ago, when here and 

 there fall-sown wheat began to appear. Wheat soon adapts itself 

 to untoward climatic conditions. By careful manipulation spring 

 wheat may be changed to winter wheat in a short time. In one in-' 

 stance only three years were required to change the one to the other. 



In its adaptation to different soils the process seems to be some- 

 what slower. Wheat, being one of the grasses, requires a rather close, 

 heavy soil for the best development of its fibrous root system, and 

 this condition is met with only in a loam, silt loam, clay loam or 

 a clay soil. There is no variety of wheat that does well in a light 

 sandy soil in the Eastern part of the United States and in the West, 

 while the durum wheats do better on the light soils than the other 

 varieties, they make their best yields on the heavier silly loam-. 



The soils in North < Jarolina that produce our best wheat are found 

 in the Piedmont and Mountainous sections of the State. These soils 

 are known as the Cecil or red clay, the Cecil loam and the Porters 

 loam, the last-named soil being confined to the mountains. All of 

 them are characterized l.v a red to reddish-brown soil Containing 

 varying amounts of sharp Band, silt and clay, impregnated with iron 



