453 MISSOURI STATE HORTICULTURAL SOCIETY. 



MANURES. 



EXrERIENCE WITH MANURES AT ROTHAMSTED. 



Sir J. B. Lawes says that a continuously unmanured plot in his grounds 

 at Rothamstcd, now yields only lo bushels of wheat per acre, instead of 

 about 12, the average of the preceding lo years, or 13, the average of the 

 preceding 36 years. The farm yard manure plot, on the other hand, 

 yields 38 bushels, of 60 pounds per bushel, against an average of only 

 32^, but of nearly 61 pounds per bushel, over the preceding 10 years, 

 and of 33| bushels, at 6o\ pounds per bushel, over the preceding 36 

 years. That is to say, whilst the unmanured produce is about three 

 bushels below its average of 13, the farmyard manure produce is more 

 than four bushels above its average of 33|. Again, another plot, which 

 receives, besides mineral manures, a liberal, but not excessive, amount 

 of salts of ammonia, yields nearly 36 bushels, at 59I pounds per bushel, 

 against an average of only 32I bushels at the same weight, over the 

 preceding 36 years ; that is, it gives an excess this year of rather over 

 three bushels. Another plot, on the other hand, with the same mineral 

 manures, but one and a half time as much salts of ammonia as plot sev-. 

 en, yields only 35|^ bushels, against its average of 36^ bushels ; that is, 

 with the excess of ammonia salts, there is, this year, i^ bushel less than 

 its average, and even less than with the smaller amount of salts of am- 

 monia. The mineral and nitrate plot, again yields only 33 1 bushels, 

 against its average of 36I bushels, showing, therefore, a deficiency of 

 three bushels, this year. 



LIQUID MANURES. 



An excellent fertilizer for flowers is made by tying up in a piece of 

 canvas, about a teacupful of soot ; immerse in about double its amount 

 of soft water, for a few days, and the water is ready for use. It is an 

 excellent stimulant, and, if applied carefully, as often as necessary, will 



