. Manures and fertilizers; a text-book for college students and a work of reference for all interested in the scientific aspects of modern farming . esence of soda in plants. — The presence ofsoda seems to be practically universal in cultivated plants,though the amounts in different plants vary widely accord-ing to the nature of the plant and to the condition underwhich it is grown. There is also a wide variation in thepercentages present in different parts of the same elevated regions, very remote from the sea, the quan-tity of soda present in plants is so small that cattle reared SO
. Manures and fertilizers; a text-book for college students and a work of reference for all interested in the scientific aspects of modern farming . esence of soda in plants. — The presence ofsoda seems to be practically universal in cultivated plants,though the amounts in different plants vary widely accord-ing to the nature of the plant and to the condition underwhich it is grown. There is also a wide variation in thepercentages present in different parts of the same elevated regions, very remote from the sea, the quan-tity of soda present in plants is so small that cattle reared SODIUM SALTS 335 there require much more common salt than those fed onplants grown nearer the sea. According to Pagnoul,1 Peligot first pointed out thedifference in the action of soda and of potash upon made analyses of many varieties of plants,2 and claimedthat the ash of most plants, including spinach, containedno soda, although he found it in fodder beets and in speciesof Atriplex and Chenopodium. When, later, Bunge3called attention to the faulty method of analysis by whichmuch or all of the soda might have been lost, Peligot re-. Full rationcommon salt Full rationmuriate of potash One-fourth ration common rationmuriate of potash Full ration common salt. One-fourth ration muriate of potash Fig. 57.— Mangels, alike with phosphoric acid and nitrogen. peated some of his earlier work,4 taking special precautionsagainst the loss of soda, and again found soda absentfrom certain plants. It was found by Deherain 5 and Sjollema6 that potatotubers were free from soda, notwithstanding that sodium 1 Ann. Agron. (1899), 467. 2 Compt. rend. (Paris), 2 (1867), 729 ; and in later issues of the samejournal. 3 Annal. de Chemie et Pharm., 172, 16. 4 Compt. rend. (Paris), 76 (1873), 113 ; Abs. Centralb. f. Agr. Chem.,4 (1873), 222-226. 6 Ann. Agron., 9 (1883), 511.« Jour. f. Landw. (1899), 309. 336 FERTILIZERS salts were present in the manures. It i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfertili, bookyear1913
