832 EXPEEIMENT STATION RECORD. 



In a test of nitrogen sources for oats, each applied in quantities supplying 

 tlie amount of nitrogen contained in 1 cwt. of sulphate of ammonia, a wheat 

 yield of 1,916 lbs. was obtained after the use of calcium cyanamid; 1,812 lbs. 

 after calcium nitrate ; 1,779 lbs. after nitrate of soda ; and 1,771 lbs. after sul- 

 phate of ammonia, as compared with 1,572 lbs. on the check plat. 



In another test of nitrogen sources, each applied in amounts supplying the 

 same amount of nitrogen as that contained in 1 cwt. sulphate of ammonia, and 

 each accompanied by a so-called standard di-essing consisting of 12 tons of 

 dung, 3 cwt. of superphosphate, 1 cwt. sulphate of potash, and 2 cwt. salt, a 

 yield of 29 tons 3| cwt. of mangels was secured after the use of sulphate of 

 ammonia, 34 tons, 15 cwt. after nitrate of soda, 36 tons 161 cwt. after calcium 

 nitrate, 35 tons 15f cwt. after calcium cyanamid, and 33 tons after soot. 

 From this test the author concludes that calcium cyanamid and calcium 

 nitrate appear to equal or excel nitrate of soda as fertilizers for mangels. 

 The planting of mangels on plats to which these nitrogen sources had been 

 applied the previous year indicated " that the residue left over for a second 

 crop was in no instance of material value." 



In a test of 10 wheat varieties, the Dutch variety Wilhelmina produced a 

 much higher yield than any other tested but was poor in strength, while Red 

 Admiral produced a much higher jneld than any other English or French 

 variety tested. Two Cambridge varieties designated as No. 1 and No. 2 ex- 

 celled the others in quality but No. 2 was the lowest yielding variety tested. 



In a meadow fertilizer test an application of 10 cwt. of basic slag and 1 cwt. 

 of sulphate of potash per acre was followed by a yield of 1 ton, 15f cwt. of 

 hay per acre as compared with 1 ton, 18^ cwt. after 12 tons of farmyard 

 manure and smaller yields after other mixtures of superphosphate, basic slag, 

 nitrate of potash, and sulphate of potash in various mixtui'es. The hay con- 

 taining the highest percentage of legumes and the lowest percentage of grasses 

 followed an application of superphosphate and sulphate of potash, while the 

 lowest percentage of legumes and the highest percentage of grasses was ob- 

 tained from the no-manure plat. 



The Woburn field experiments, 1911, J. A, Voelckeb {Jour. Roy. Agr. Sac. 

 England, 72 (19 11), pp. 387-403).— This continues the work noted above. The 

 prolonged drought of 1911 was especially severe on the grain crops on this 

 light sandy soil. 



On the plats on which wheat and barley have been grown continuously, the 

 thirty-fifth year's yields of these 2 crops on the check plats averaged 8.2 and 

 2.6 bu. per acre, respectively, as compared with 20.2 and 26.7 bu. after farm- 

 yard manure equivalent to 100 lbs. of ammonia ; 21.8 and 3.S bu. after nitrate 

 of soda equivalent to 50 lbs. of ammonia ; 21.6 and 1.7 bu. after half this 

 amount of nitrate of soda ; and 20.2 and 6.2 bu. after 1 cwt. of sulphate of 

 potiish and nitrate of soda equivalent to 25 lbs. of ammonia. On the wheat 

 plats nn application of sulphate of ammonia equivalent to 25 lbs. of ammonia 

 was followed by a yield of 1.4 bu. as compared witli 19.1 bu. after the same 

 amount of sulphate of ammonia supplemented by 5 cwt. of lime in January 

 1905. repeated in 1909 and 1910. These same fertilizers, and superphosphate 

 and rape dust singly and in various mixtures and amounts were also applied 

 to 14 other plats. 



A higher yield of grain and straw was obtained from a wheat plat fertilized 

 with the manure from corn-fed cattle than in case of the check plats or a plat 

 fertilized with the manure from cattle fed on decorticated cotton cake. On 

 land on which the previous year's swede crop had been consumed by sheep 

 which were fed corn on the plats, the wheat yield was 2 cwt. and the straw 

 yield over 3i cwt. greater than on the plat where the swede crop had been 



