Corn Growers' Association. 



353 



RESULTS OF EXPERIMENTS ON THE GRAY SILT LOAM OF SOUTHWEST 



MISSOURI (LAMAR). 



I wish to call detailed attention to one more series of soil in- 

 vestigations which are especially interesting and valuable to the 

 farmers concerned. These are the experiments on the gray silt 

 loam of the more or less rolling prairie of Barton, Bates, Ver- 

 non and St. Clair counties. The soil is to be distinguished from 

 the sandy type or the limestone soil of this region by its gray 

 color, its fine character and its rather level stretches which 



Effect of soil treatment on wheat. Lamar Experimental Field, 1907. No treatment pro- 

 duced 12 bu. per acre; cowpeas, phosphorous, potassium, lime treatment produced 25.8 

 bu. per acre. 



frequently need drainage. It is a gray loam to a depth of 

 eight inches, underlaid by a silty clay of a yellowish gray 

 color, running into a reddish clay, frequently at depths varying 

 from 2 to 3 feet. It will produce on an average about 25 to 30 

 bushels of corn, from 10 to 15 bushels of wheat and 20 to 25 bushels 

 of oats. The analysis of this soil, as compared with a very fertile 

 soil, is shown in the following table : 



A-23 



