FIELD CROPS. 831 



fombined and singly, was to increase germination of beet seeds and basten 

 early development. The superphosphate seemed to improve the root development 

 and the nitrate the loaf development. 



[Seedling canes and manurial experiments], J. P. c 'Albuquerque and J. R. 

 BovKLL (Barbados Dcpt. Agr., Rpt. Sugar-Cane Expts. 1912-191.'f, pp. Jf-82). — 

 This reix)rts the progress of work In manurial experiments and variety tests 

 with seedling canes, previously noted (E. S. R., 30, pp. 340, 835). 



It is noted " that all the plats that received sulphate of ammonia gave an 

 increase over the no-nitrogen plats, and that the most favorable result of the 

 application of nitrogen in any form was obtained on the plat that received 

 60 lbs. of nitrogen as sulphate of ammonia, 15 lbs. in January and 45 lbs. 

 in June. The plats receiving nitrogen as dried blood, to the extent of 40 

 or 60 lbs. nitrogen, with one anomalous exception showed an increase on the 

 no-nitrogen plat, but not so great as in the best sulphate of ammonia plats. 

 The results of tlie nitrate of soda plat must be rejected as unreliable. The 

 results of the phosphate series show that all the plats that received phosphate 

 either in the form of superphosphate or basic slag, gave smaller yields than 

 the no-phosphate plats. With two exceptions all the potash plats show an 

 increase on no-ix)tash and the best result of the series was given by the plat 

 that received SO lbs. of potash as sulphate of potash (about 160 lbs. sulphate 

 of potash) applied all in January." 



Results of productivity tests of artificial hybrids, natural hybrids, self- 

 fertilized seedlings, seedlings obtained from selected seeds, and varieties 

 of ratoon plantings carried out at many centers on both black and red soils, 

 are given in tabular form. It is noted that variety B. 6450 has as usual 

 given satisfactory results in comparison with, the standard White Transparent. 

 The average yield of tliis variety over the standard, both plants and ratoons 

 on black and red soils, is given as 6.5 tons of canes per acre for the season 

 1912-1914. 



[Fertilizers on sugar cane], H. T. Easteeby (Ann. Rpt. Bur. ^ugar Expt. 

 8tas. [Qiieotslaud], JOi^. pp. 30, 31). — Experiments with different forms of 

 nitrogenous manures, including dried blood, sulphate of ammonia, nitrolime, 

 nitrate of ammonia, and nitrate of soda, applied to sugar-cane plant crop at the 

 rate of 100 lbs. of nitrogen per acre, gave 8.5, 7.9, 7.8, 7.4, and 7.3 tons of sugar 

 per acre, respectively. 



Experiments and observations on Helianthus annuus, F. A. Satsyperov 

 (Trudy Biuro Prlld. Bot. (Bui. Angew. Bot.), 7 (19U), No. 9, pp. 5^3-600, 

 figs. 2). — This discusses work with the sunflower of Russia carried on during 

 1912, 1913, and 1914 at the experiment station in the Government of Voronezh. 

 Notes cover the development of the stem, leaf, inflorescence, flower, fruit, and 

 abnormalities. Some work is described in the inheritance of the characters 

 of armored layer of cells beneath the subepidermal tissue, black-violet pigment 

 in the subepidermal tissue, and the pigment in the epidermis which gives the 

 seeds a striped appearance. 



Sweet clover, C. C. Cunningham (Kansas 8ta. Circ. J^Jf, pp. 10, figs. 3). — ^This 

 gives cultural methods and uses. 



Sweet clover, I. S. Cook (West Virginia Sta. Circ. 14 (1915), pp. 7, figs. 5). — 

 This gives cultural methods and uses of this plant under West Virginia con- 

 ditions. 



Deli tobacco, a mixture of races, based on differences in leaf -breadth, J. A. 

 Honing (Meded. Deli-Proefstat. Medan, 8 (1914), No. 6, pp. 155-174).— This 

 article gives measurements of tobacco leaves from the harvest of 1913 and 1914 

 from differently bred lines of Deli tobacco and discusses the results. 



