EVIDENCES OF ACIDITY 



their reputation for good fighting qualities. 



The Clovers. Red clover can make 

 growth in some soils that have a lime defi- 

 ciency. If all other conditions are favor- 

 able, the lime requirement may exceed one- 

 half a ton per acre of fresh burned lime 

 and not affect the clover adversely, but 

 farm experience throughout the country 

 has demonstrated that when soil acidity is 

 only slight and clorer grows with difficulty, 

 an application rarely fails to favor the 

 clover in a marked degree. Experience has 

 taught the land owners to fear soil acidity 

 when red clover does not thrive where for- 

 merly it made good growth. 



The prevalence of alsike clover in a 

 farming region is indicative of lack of lime. 

 This clover thrives in a calcareous soil, but 

 is more indifferent to a small lime supply 

 than is the red clover. As red clover seed- 

 ings begin to fail, the alsike gains in popu- 

 larity, and where a soil is decidedly sour 

 the alsike is most in evidence. The latter 

 has less value to the farmer, rooting nearer 

 the surface of the soil, and making less 

 growth of top, but it has gained in favor 

 with farmers as soil acidity has increased. 



The Grasses. Timothy is more resistant 



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