LOW GRADE NITROGENOUS MATERIALS. ETC. 



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stances that will give the best results for his conditions and not 

 purchase nitrogenous fertilizer that some neighbor recommends 



Fig. 7.— A good crop of hay, the result of judicious soil management. 



who secured good crops with an entirely difTerent crop and soil, 

 etc.* 



Functions of Nitrogen. — Nitrogen increases growth and defers 

 maturity. In a certain parish in Louisiana where the people were 

 ignorant along fertilizing lines, cotton-seed meal was the only 

 fertilizer known to them. So year after year they applied this 

 fertilizer to their cotton. For the last three years that they 

 practiced this, they produced excellent large cotton plants but 

 the crop did not mature well or produce scarcely any cotton. 

 The people could not understand it. They did not know that 

 cotton-seed meal was a nitrogenous fertilizer nor did they know 

 that nitrogen produced growth. The Experiment Station was 

 called upon to investigate the trouble and as the soil was natur- 

 ally rich in potash, applications of acid phosphate corrected the 

 condition. The above example shows the results of an excess 

 of nitrogen in producing growth and deferring maturity. 



