LIME AND MISCELLANEOUS FERTILIZERS 23! 



Weeds and plants produced on waste land along the 

 sea are in some European countries burned and the 

 ashes used as fertilizer. By this means waste land is 

 made to produce fertilizer for fields which are tillable. 



276. Weeds. The amount of fertility removed in 

 weeds is usually more than in agricultural plants, be- 

 cause weeds have greater power of obtaining food from 

 the soil. When wheat or other grain is raised, and a 

 small crop of grain and a large crop of weeds are the 

 result, there is more fertility removed from the soil than 

 if a heavy stand of grain had been obtained. The ashes 

 of . strand plants and weeds are extremely variable in 

 composition. 



277. Wool Washings and Waste. The washings from 

 wool contain sufficient potash to make them valuable as 

 fertilizer. In wool there is a high per cent of potash, 

 which is soluble and readily removed in the washings. 

 Wool waste may contain from I to 5 per cent of potash 

 and from 4 to 7 per cent of nitrogen in a somewhat 

 inert form. 



