62 



AGRICULTURE FOR COMMON SCHOOLS 



in plots and each fertilized differently. When the crop is 

 harvested and weighed and the results compared, one can tell 

 which fertilizer did the most good. 



Ordinarily fertilizers are applied from a box fitted to the 

 machine which plants or sows the seed. In the case of wheat 

 and oats the drill usually has a box into which fertilizer can 



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12. APPLYING LIME TO LAND WITH A SPECIAL MACHINE 

 By courtesy of the Ohio Experiment Station 



be put and sown at the same time as the grain. Many corn 

 planters have fertilizer attachments which scatter the fertilizer 

 in the row. For some garden and truck crops it is desirable 

 to put the fertilizer in the hill or the row where the roots can 

 easily get the plant food. Care must be used in such cases, 

 for the dissolved fertilizer may be so strong as to kill the roots 

 of the plants. 



Stable manures, clover, and a good rotation of crops should 



