FARM MANURES 



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The manure may be hauled directly to the field 

 each day and spread on the surface or plowed in. 

 This method is the best when practicable because 

 fermentation of the manure will take place slowly 

 in the soil and the gases produced will be absorbed 

 and retained by the soil. 



Gypsum or land plaster is often sprinkled on 

 stable floors and about manure heaps to prevent the 

 loss of ammonia. 



Copperas or blue stone, kainite ,and superphos- 

 phate are sometimes used for the same purpose. 

 There is, however, nothing better nor so good for 

 this purpose as dry earth containing a large per- 

 centage of humus. 



Losses from washing or leaching by rain may be 

 prevented by piling the manure under cover or by 

 hauling it to the field as soon as produced and 

 spreading it on the surface or plowing it under. 



APPLYING THE MANURE TO THE SOIL 



From ten to twenty tons per acre is considered a 

 sufficient application of barn manure for most farm 

 crops. Larger amounts are sometimes applied to 

 the soil for truck and market garden crops. 



Barn manures are applied to the soil by these 

 methods : 



The manure is sometimes hauled out from the 

 barn and placed in a large pile in the field or in 

 many small piles where it remains for some time 

 before being spread and plowed or harrowed in. 



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