FEETILIZEKS. 129 



Swedisli Moor-Culture Association, 1887-1899, H. von Feilitzen {Jour. 

 Landw., 50 {1902), No. 1, pp. 77-90, pin. 3; Deut. Layidw. Presse, 29 {1902), Nos. 48, 

 p. 413, figs. 2; 49, pp. 4^0, 421, fig. 1). — A. summary of the results of the experiments 

 carried out by C. von Feilitzen, former director of the Swedish Moor-Culture Associ- 

 ation, which have been published in book form. The Swedish moor soils are as a 

 rule poor in potash, and thus it was found that both the yield and quality of crop was 

 imjiroved by ai:)plications of potash fertilizers. The soils are also poor in phosphoric 

 acid and are l^enefited by apphcations of phosphates. The crude pliosphates were 

 of little benefit, but those containing citrate-sohible and water-sol uljle phosphoric 

 acid were of equal value. The phosphates shortened the period of growth. Soluble 

 nitrogenous fertilizers were decidedly beneficial, but lengthened the period of 

 growth. Manure gave good results, but this is attributed to the soluble nitrogen 

 present or to the fermentation set up by the manure in the soil, which makes the 

 nitrogen present more available. 



Pot experiments on the action of lime and magnesia in burnt lime and 

 marl, 11. ULHRicnx (Landir. TV/.s. Stat., ,57 {1902), No. 1-3, 2)p. 103-166).— Th'it^ is a 

 detailed account of pot experiments with barley supj^lementing experiments previ- 

 ously reported (E. S. E., 11, p. 1023). As in the previous experiments referred to, the 

 lime fertilizers in all amounts used as a rule increased the yield to a marked extent. 

 The weight of grain, however, was in every case reduced by applications of lime and 

 marl in February. The tillering of the grain was invariably increased by the use of 

 lime and magnesia fertilizers. Heavy applications of lime with small magnesia con- 

 tent i^romoted all jihases of growth, but of straw more than of grain. In this case 

 also the weight of the grain was lighter. Heavy applications of magnesia lime 

 reduce<l yield of grain and straw. 



On the dependence of the maximum yield on a definite quantitative rela- 

 tion between lime and magnesia in soils, (). Loew {Landw. Jahrh., 31 {1902), 

 No. 4, 2'P- 561-576). — A discussion of this subject based mainly upon the results of 

 investigations by the author and D. W. May (E. S. R., 13, p. 630) and T. Furuta 

 and K. Aso (E. S. R., 14, p. 14), which show a definite relation between the amounts 

 of lime and magnesia and the maxinnim growth of plants. 



On the fertilizing value of peat ashes, J. Boes {Ztschr. Oeffenfl. Chem., 8 {1902), 

 pp. 150, 151). — This article discusses briefly the variation in the chemical composition 

 of such ashes. 



Nitrate of soda, potassium perchlorate, and crops, L. Grandeau {.Jour. Agr. 

 Prat., n. ser., 4 {1902), No. 34, p}>- 242-244)- — This is a review of various investiga- 

 tions on this subject from which the following conclusions are drawn: Nitrates con- 

 tain an element (potassium perchlorate) which has until recently been ignored. 

 This perchlorate is very unequally distributed in the nitrate and is very variable in 

 amount. High percentage nitrates as a rule contain only small amounts of perchlorate. 



A new use for potash salts in agriculture, F. Lucke {Chem. Ztg., 26 {1902), 

 No. 50, Repert.,p. 175). — A brief note on a new manure preservative known as Utilit, 

 a by-product of the potash industry, which contains free sulphuric and phosphoric 

 acids and various combinations of potash. 



Investigations on the influence of soil moisture on the action of phosphoric 

 acid in bone meal, Thomas slag, and superphosphate, C. von Seelhoest {Jour. 

 Landw., 50 {1902), No. 2, pp. 167-174). — The results of pot experiments which are 

 reported show that the moisture content of the soil was without effect on the action 

 of the phosphoric acid of bone meal. On the other hand, the action of the phos- 

 phoric acid of Thomas slag and superphosphate was influenced to a considerable 

 extent by the water content of the soil, being favored by an increased water content. 



The comparative value of difierent phosphates, D. Prianishnikov {Ann. 

 Agr on., 28 {1902), No. 7, pp. 356-367). — A translation of an article already noted 

 (E. S. R., 13, p. 934). 



