COTTON 
125 
yield 13 pounds of nitrogen, 5 pounds of phosphorus 
and 6 pounds of potassium are used. 
If seed are sold, cotton is an exhaustive crop, 
but still only moderately so. When a rational 
system of farming is followed so that seed (or its equiv- 
alent in meal) may be used by live stock on the 
farm, and returned in manure to the land, cotton 
becomes the least exhaustive of all field crops. 
The demands on the soil are slight, indeed, when 
lint is the only product that goes from the farm. 
Wise is the farmer who realizes this, and blessed is 
he whose farming methods recognize this practice. 
