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Relative Lime Needs of Sulfate of Ammonia and Nitrate of Soda and of Different Crops 1
Author(s) -
Hartwell Burt L.,
Damon S. C.
Publication year - 1927
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1927.00021962001900090009x
Subject(s) - lime , citation , ammonia , field (mathematics) , mathematics , horticulture , computer science , chemistry , library science , materials science , biology , organic chemistry , pure mathematics , metallurgy
Prior to this paper, the iatest publication of the detailed data from the two-fifteenths acre plats (Nos. 23, 25, 27, and 29) herein involved was Bulletin ~6o of the Rhode Island Experiment Station. In that bulletin was summarized the results from I893 to i914, especially the comparative ffect of lime on different kinds of plants. In addition to liberal amounts of phosphoric acid and potash, plats 23 and ~ 5 annually have received nitrogen in sulfate of ammonia, and plats 27 and 29 the same amount in nitrate of soda. The average annual application during the 34 years has been nitrogen, 49 pounds; phosphoric acid, i~2 pounds; and potash, ~o5 pounds; or an equivalent of ~,2oo pounds of a 5: 8:8 fertilizer. During the war period a total of 1,425 pounds of common salt was used to supplement unusually small applications of potash. Magnesia was added in various sources from time to time to guard against a possible deficiency. Acid phosphate was the source of phosphoric acid, and muriate or sulfate the usual sources of potash. No. attention has been given to supplying manganese, although it is now known that in some of the earlier years of the experiment, but only on the nitrate plat which had been limed to neutrality, the chlorosis then observed must have been due to a deficiency of available manganese.