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BULLETIN 



It is here seen that the plants grown upon the manured 

 ground have yielded to the treatment more than double the 

 amounts of chlorine that were recovered from the plants which 

 had grown upon, the unmanured ground. 



The observations here presented, both upon the soils and 

 upon the plants which had grown upon the soils, make it clear 

 that when farm yard manure is applied to fields it has the 

 effect not only of increasing the yields but at the same time of 

 increasing the amounts of water-soluble salts which can be re- 

 covered from the soils themselves and from the plants which 

 have grown upon them. 



LARGEST RETURNS FROM STABLE MANURE. 



It will be clear from the data which have been presented, 

 relative to the yields of corn and potatoes which have been se- 

 cured through the application of 5, 10 and 15 tons of manure 

 per acre, to different soil types, and also from the rates of nitri- 

 fication which were observed when larger amounts of manure 

 had been used, that a careful observation of results and good 

 judgment are necessary in order to secure the largest returns 

 from manure applied to land. 



In general farming, there can be no question but that, it is 

 much better to follow the practice of giving frequent and light 

 dressings of manure to land rather than to apply large amounts 

 at long intervals. A small increase of a few bushels of grain, 

 potatoes or roots, or a few hundredweight increase of grass or 

 hay per acre, steadily maintained over the whole farm year after 

 year, will bring much larger returns than can be secured from 

 high fertilization at long intervals, or continuonslv on small por- 

 tions of the farm, while the balance receives little attention. 

 One hundred tons of manure carefully applied to 10 or 15 acres 

 well cared for will give larger returns, in general farming, than 

 when the same amount is applied to four or five acres, as is 

 often the case. 



When too much manure is applied wasteful oxidations occur 

 which destroy the organic matter at once, returning it direct to 

 the atmosphere; and this may happen when an unsuccessful 



