Identifier: gardenerschronic35lond (find matches)
Title: The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects
Year: 1874 (1870s)
Authors:
Subjects: Ornamental horticulture Horticulture Plants, Ornamental Gardening
Publisher: London : (Gardeners Chronicle)
Contributing Library: UMass Amherst Libraries
Digitizing Sponsor: Boston Library Consortium Member Libraries

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e per annum.The fact being, that it is only the comparativelysmall proportion of the nitrogen of farmyardmanure which is due to the liquid dejections ofthe animals that is in a readily and rapidlyavailable condition, whilst that due to more orless digested matter passing in the solid matter,is more slowly available, and that in the litterremains a very long time inaoti\e. Hence,the addition of nitrogen, as nitrate of soda, tothe farmyard manure had a very markedeflfect. It may be mentioned that, over the last sixyears, farmyard manure, together with theresidue of previously applied farmyard manure,superphosphate, and nitrate of soda, only yieldedan average of about 4 tons of tubers; and thatfarmyard manure and the residue of farmyard ma-nure and superphosphate, only gave about 4 J tons,whilst farmyard manure alone gave, o\er thefirst six years, 5:^ tons, is a clear indication that * The superphosphate, but not the nitrate, was applied iuthe aeveiith year, 188:^. 5 > o zc c c ?)0cr.
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May 11, 1889.) THE GARDENERS CHRONICLE. 593 the latnr seasons were somewhat less favourablefor luxurianoe with such manures. The last column of the table shows, as before,that the proportion of diseased tubers was thegreater, the jjreater the amount of nitroij^ensupplied, and the greater the luxuriance. The next point of interest is the amount ofsome of the more important chemical con-stituents of the tubers stored up in the crop,under the inrtuence of the different manures,and especially the increased amount for a givenquantity of nitrogen supplied in manure. The average amount of nitrogen annuallystored up in the tubers grown without manurewas, notwithstandirg the amount supplied in theseed, only 14-i) lb., or less than would be yieldedin ^\heat or Barley under the same conditions. On the other hand, the direct application of 86lb. of nitrogen per acre per annum, in the form ofanmionium salts alone, only raised the amounttaken up to 197 lb., and when supplied as nitrate ofsoda alone

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