42 



EXPERIMENT STATION EECQED, 



leads the world and that it can be itrodnced at a good )irofit. The product of 

 1907-8 is estimated at amounting to 150 tons, valued at $18,000. 



Phosphoric acid consumption of the beet plant during the first year of 

 its growth, K. Andrlik and J. Urban (Ztschr. Zuckcrindus. Bohmen, 33 

 (190S), A'O. 2, PI). 83-9.'i). — Tlie results of cooperative tests with reference to 

 this problem are tabulated and discussed. 



The average results of the several experinients show that a yield of 4.000 kg. 

 of beets produced under normal conditions required from 51.7 to 87.8 kg. of 

 phosphoric acid, while when grown under abnormally dry conditions only 48.6 

 kg. were used. The same kind of seed showed a different phosphoric acid con- 

 sumption by the plants in different seasons. The plants from Nimburg seed 

 used from 51.7 to 69 kg. of phosphoric acid per hectare, while seed from another 

 source used from 67.5 to 86.3 kg. 



The quantity of phosphoric acid consumed in the production of 100 parts of 

 sugar varied with the character of the seed, the soil, and the weather. In 1902, 

 100 parts of sugar required the consumption of 0.71 of a part of phosphoric 

 acid; in 1903, 0.97 of a part; in the dry season of 1904, 0.68 of a part; and in 

 1905, 1.15 and 1.27 parts, the average for all tests being 0.95 of a part. The root 

 contained an average of 48.04 per cent of the total phosphoric acid taken up by 

 the plant, the range being between 41.7 and 60.9 per cent. As a rule when large 

 quantities of this nutrient were taken up its proportion in the root was reduced. 



Third report on the influence of manures on the yield of timothy hay, 

 J. A. BizzELL and J. O. Morgan (Neiv York Cornell Sta. Bui. 261, pp. 259-276, 

 figs. 22). — This bulletin constitutes the third report on experiments begun in 

 1903 and previously noted (E. S. R., 17, p. 461; 18. p. 933). 



In 1907 the apparent increase in yield of hay was lai-gest on the plat which 

 received 20 tons of barnyard manure per acre on September 16, 1903, and Octo- 

 ber 2, 1906. This increase amounted to 6,490 lbs. per acre, a plat treated in 1906 

 and 1907 with 320 lbs. of acid phosphate, 80 lbs. of muriate of potash, and 640 

 lbs. of nitrate of soda per acre standing second with 5,413. lbs., and a plat 

 treated with 10 tons of barnyard manure in 1903 and 1906 being third with 4,390 

 lbs. The average yield of hay on 8 untreated plats for the 3 years, 1905-1907, 

 was 2,901 lbs. per acre, on 3 plats receiving only mineral fertilizers 4,283 lbs., 

 on 7 plats receiving nitrogen as nitrate of soda with or without mineral fer- 

 tilizers, 5.635 lbs., and on 2 plats receiving nitrogen in barnyard manure 6.193 

 lbs. The relative apparent influence of the dift'erent fertilizer applications is 

 shown in the following table: 



Apparent inereases in yield due to the different fertilizinf/ elements. 



Num- 

 ber 

 of 

 plats. 



Fertilizing elements. 



Apparent increase in yield of 

 hay per acre. 



1905. 



Lbs. 



Nitrogen 1, 216 



Phosphorus 607 



Potassium '. 954 



Nitrogen and phosphorus 1,573 



Nitrogen and potassium 1,900 



Phosphorus and potassium 510 



Nitrogen, phosphorus, and potassium 2, 613 



Farm manure, 10 and 20 tons 3,310 



Lbs. 

 1,723 

 417 

 1,224 

 2,126 

 2,470 

 1,780 

 3,543 

 3,475 



1907. 



Lbs. 



696 

 1,023 



786 

 1,143 

 1,876 



947 

 3,535 

 5,440 



Average 



of 

 3 years. 



Lbs. 

 1,211 

 682 

 988 

 1,614 

 2,082 

 1,079 

 3,230 

 4,075 



The plats receiving mineral fertilizers only, especially the one treated with 

 potash alone, produced a rank growth of alsike clover which was not noticeable 



