FIELD CROPS. 



539 



Manurial experiments with cotton in the Leeward Islands, H. A. Tempany 

 (West Indian Bui., 11 (1910), No. 1, pp. 60-67). — Tables state the amount of 

 fertilizer applied and the yields of Sea Island cotton obtained on plats in which 

 nitrate of soda, sulphate of ammonia, sulphate of potash, basic phosphate, 

 cotton-seed meal, salt, and sulphate of copper were used as the plant food 

 sources. 



The largest increase, 311 lbs. of seed cotton per acre, followed the application 

 of sulphate of ammonia, sulphate of potash, and superphosphate. Increased 

 yields of more than 100 lbs. of seed cotton per acre followed applications of 

 nitrogen. The author concludes that artificial fertilizers are un remunerative 

 on his soils, and suggests the use of natural and green manures. 



Supply and distribution of cotton, D. C. Roper (Bur. of the Census [U. 8,1 

 Bui. 110, pp. 32, dgms. 2). — An earlier bulletin of this series (E. S. R., 22, 

 p. 445) contains similar data and discussions. Tables present statistical data 

 on the imports, exports, and distribution of cotton during the year ended 

 August 31, 1910, cotton statistics for earlier periods, mainly since 1890, and the 

 world's production of cotton, wool, silk, flax, hemp, and jute by countries in 

 1909, 1899, and 1889 



Manurial experiments on oats at Coates, 1910, B. Swanwick and E. Kinch 

 (Agr. Students' Gas., n. set:, 15 (1910), No. 2, pp. JfS, 44). — Ammonium sulphate, 

 nitrate of soda, nitrate of lime, and calcium cyanamid were used in sufficient 

 quantities to supply the amount of nitrogen found in 1 cwt. of ammonium 

 sulphate. The check plat yielded 43 bu. of oats and 16J bu. of straw per acre. 

 The highest straw yield, 20} cwt., followed the use of sulphate of ammonia. 

 The highest grain yields, 53^ and 57^ bu. per acre, respectively, followed calcium 

 cyanamid and nitrate of lime. 



Peanuts in Hawaii, F. G. Krauss (Hawaii Sta. Press Bui. 28, pp. 11, pis. 2). — 

 This bulletin discusses the uses of peanuts and reports the cost of growing in 

 Hawaiian experiments as about $55 per acre. The principal data reported are 

 stated in the following table: 



Results of station and cooperative planting of peanuts during 1908-10. 



Variety. 



Spanish 



Bunch Jumbo 



Running Jumbo 



Virginia Creeping 



Bunch Virginia (Sport) 



Value 

 per 

 acre. 



898.00 



87.00 



100. 80 



105. 60 



The status of the potato growing industry in Ohio. — Seasonal notes on 

 potatoes, F. H. Ballou and J. H. Gourley (Ohio Sta. Bui. 218, pp. 559-603, 

 figs. 12). — The authors discuss rotations and soil preparation for potato grow- 

 ing, northern and home-grown seed, and sun-sprouting as a means of preserva- 

 tion and preparation for planting, and spraying for insects and fungi, and 

 report tests of different quantities of seed, seed selection and improvement, 

 and treating potatoes for scab. A seasonal report for 1909 is appended, 

 87402°— No. 6—11 4 



