320 EXPERIMENT STATION KECOKD. 



results obtained. The average teiupei-ature througliout tlie growing period was 

 2 to 3° C. below normal, and the vegetation period of the crop HI days, against 

 88 days in ]!)()(!, S!) days in 1905, and 101 in 1904, 



Tests of the new nitrogenous fertilizers on potatoes and turnips in 1907, 

 L. Bauwkns (■Jour. Soc. Cent. A(ii: licUj., ')■', ( lUOS). Xos. J. ;>/>. KiU-lLi; 6. pp. 

 101-19S). — These tests, which were made on sandy and clay soil, show that 

 sulphate of ammonia and nitrate of soda were about equally effective, with possi- 

 bly a slight difference in favor of the sulphate, which is attribted to the un- 

 usually favorable season. Calcium cyanamid and basic lime nitrate, although 

 giving good results, were not quite as effective as the nitrate of soda and sul- 

 phate of annnonia. 



On the efficacy of calcium cyanamid under different manuring conditions, 

 I. Namba and C. Kanomata {BuJ. Col. Agr., Tokyo Imp. Univ., 7 (1908), No. 

 5, pp. 63l-63.'i, pJ. 1; ubs. in Jour. Chcm. Hoc. [London], it', (IDOS), No. 5Ji9, 11, 

 p. 623). — In pot experiments with oats, onions, and Brassica cliinensis it was 

 observed that lime nitrogen gave better results when used in connection with 

 superphosphates than when used with neutral phosphate. It, however, does 

 not depress the availability of bone dust, its action in this respect being similar 

 to that of ammonium sulphate rather than to that of sodium nitrate. 



Fertilizer experiments ■with phosphates on Finnish moor land, A. Kindell 

 {Finska Mosxkull urfor. Arshok, 1906-7, No. 3, pp. 1S2-I91). — Experiments were 

 conducted during ]!K)o-190G for the study of the effect of different phosphates — • 

 bone meal, Thomas slag, and Algiers phosphate — for oats and hay with and 

 without liming. The relative value of the three phosphates for the growing of 

 these crops on moor soils was as follows, for 50 and 100 kg. of phosphoric acid, 

 respectively (Thomas slag=100) : Bone meal 118.1 and 111.7, Algiers phosphate 

 49.7 and 67.4. Simultaneous applications of lime hardly changed the effect of 

 the Thomas slag, while it decreased greatly the effect of the bone meal, and 

 especially that of the Algiers phosphate. 



Comparative fertilizer experiments with high-percentage and low-per- 

 centage Thomas slag, Schweickert {Landiv. Ztsclir. Hlicinprovinz, 9 (1908), 

 Xos. 11, pp. Vt6-l-'i8; 12, pp. 161-163). — A series of experiments on meadows 

 and with rye and oats are reported. The slags were used with and without 

 the addition of lime. The general result was that the high-grade slag was as 

 a rule more profitable than the low-grade. 



On the value of refuse lime from sulphate-cellulose factories as an amend- 

 ment on moor soils low in lime, II. von Feimtzen (!<rrn>ika Mosskulturfiir. 

 Tidskr., 22 (1908), No. 1, pp. Ji2-.'i8, figs. 2). — Pot experiments with red clover 

 gave results indicating that this material can fully replace slaked lime on peaty 

 soils low in lime if added in air-dry condition. 



Gypsum as a manure, T. Takeuchi (BuI. Col. Agr., Tokyo Imp. Univ., 7 

 (1908), No. 5, pp. 583-597). — Pot experiments with peas, beans, oats, rice, and 

 spinach in which gypsum was used in connection with ammonium sulphate, 

 sodium nitrate, lime nitrogen, potassium sulphate, and different forms of phos- 

 phoric acid are reported. 



It was observed that as a rule gypsum decreased the yield when used in 

 connection with acidic fertilizers and increased the yield when used with 

 alkaline fertilizers. Gypsum therefore appears to be a valuable addition to 

 fertilizers containing sodium nitrate or other substances which produce an 

 alkaline reaction in the soil. If, however, acidic fertilizers such as superphos- 

 phate and ammonium sulphate are used gyi)suni is likely to decrease the yield. 



It was also found in these experiments that gypsum exerts a favorable influ- 

 ence in overcoming the injurious effect on plants of an excess of magnesia in 

 the soil. In case of spinach it was observed that applications of carbonate of 



