42 EXPERIMENT STATION RECORD. 



Experimental study on varieties of potatoes for the periods 1940-11 and 

 1911-12, A. C. ToNNELiEK {Buenos Aires: Min. Agr., 1913, pp. 147, figs. 147). — 

 Notes on about 500 varieties of potatoes include metliods of cultivation, rainfall, 

 and yield per hectare which ranged from 120 to 43,480 kg. This work was 

 done at the experiment station. 



Notes on potato growing {Queensland Agr. Jour., 31 {1913), No. 6, pp. 343- 

 348). — There was an average gain of 2 tons, 5 cwt. of tubers per acre when the 

 seed potates were allowed to sprout before planting. Certainty of a perfect 

 stand by this method is noted as the chief gain factor. The heaviest yields 

 were secured when the sets were planted 1^ ft. apart, in rows 3 ft. apart. 

 Earthing up in rows running north and south gave an increase in yield of about 

 2 tons over earthing up in rows running east and west when potatoes were 

 planted 3 ft. apart each way. 



[Experiments with rape], Bieleb {Illus. Landw. Ztg., 33 {1913), No. 90, p. 

 815). — This paper reports results of variety tests of rape for the years 1906, 

 1908, 1910, and 1911 and notes a correlation between rainfall and vegetation 

 period of rape as follows: 238 mm. and 48 days, 196 mm. and 39 days, 208 mm. 

 and 57 days, and 123 mm. and 39 days. 



In a culture experiment soil preparation by plowing 8 in. and subsoiling 12 

 in. deep gave a greater yield of rape seed, while plowing to the deph of 14 in. 

 without subsoiling gave larger yields of straw than other methods, including 

 plowing to the depth of 8 in. without subsoiling. 



Production of rape seed near Shanghai, A. P. Wilder {Daily Cons, and 

 Trade Rpts. [U. S.], 16 {1913), No. 300, p. i^^-S).— This notes the production of 

 rape seed in the Loongwah district, China, where yields reach 1.600 lbs. per 

 acre. The manufacture of oil is also noted. 



The cultivation of rice in Uruguay, T. Kessissoglou {Rev. Min. Indus. 

 Uruguay, 1 {1913), No. 5, pp. 4^-112, figs. 42)- — Aside from methods of culti- 

 vation employed in Uruguay this gives botanical characteristics, history and 

 classification of rice, and some notes on results of variety and cultural tests at 

 the National Institute of Agronomy at Montevideo, between October, 1912, and 

 April. 1913. 



The composition of sugar beets grown in the northern counties, S. H. 

 Collins and A. A. Hall {Jour. 8oc. Chem. Indus., 32 {1913), No. 19, pp. 929- 

 931). — The tabulated results of analyses of the sugar-beet crops of 1911-12 

 under various manurial treatments are given. The sugar content ranged from 

 12.45 to 16.85 per cent. 



Sugar-beet seeds, Schkibatjx {Bui. Soc. Agr. France, 1913, May 1, pp. 322- 

 326). — This paper discusses methods of placing valuations on beet seeds of 

 different sizes based on germination tests. A scale of seed weights and ger- 

 minative ability, based upon the author's experiments, is presented. 



Sugar beet seeds, M. A. Demolon {Bui. Soc. Agr. France, 1913, May 1, pp. 

 326-328). — In studying the influence of the size of beet seeds on the product 

 very small (100 balls=0.4 gm.), small (100 balls =0.8 gm.). medium (100 

 balls=1.6 gm.), and large seeds (100 balls=2.22 gm.) yielded 354, 330, 390, and 

 371 gm., respectively. 



Experiments in selection of sugar cane, A, H. Rosenfeld and T. C. Barber 

 {Rev. Indus, y Agr. Tucumdn, 4 {1013), No. 5, pp. 200-204)- — The average 

 results of 3 years' work of selection gave a yield of 48.378 kg. per hectare as 

 compared with 39,732 kg. for unselected canes. 



Experiments on thinning sugar cane in the row, A. H. Rosenfeld and J. A. 

 Hall {Rev. Indus, y Agr. Tucumdn, 4 {1913). No. 4' PP- 150-152). — The results 

 showed a yield of 41,653 kg. per hectare without thinning as compared with 

 38,326 kg. for the thinned area. 



I 



