FIELD CROPS. 35 



Seed selection series, I, Broach cotton, T. F. Main (Dept. Af/r. Bombay 

 Bui. '16, J!)ll, pp. 3, pis. 5). — A descriptioQ of the ideal broaeli cotton plant and 

 directions for field selection are accompanied by photograplis illustrating the 

 characters to be sought or avoided in obtaining plants of the proper habits and 

 fiber of sulBcient length for high-ginning qualities. 



Sakellaridis cotton (Btcl. Imp. Inst. [So. Kensington], {1911), No. S, 

 p. 28S). — This article reports the discovery of a new type of cotton in Egypt by 

 Salcellaridis. It matured earlier than Mitafifi, but flourishes in the same dis- 

 tricts and in districts which are not suitable for Yauuovitch. The fiber is soft, 

 silky, cream-colored with reddish tinge, of good strength, and from 1.4 to 1.7 in. 

 in length. Experts valued it at 14i cts. per ])ound as compared with " fine " 

 Yanuovitch at 18| cts. per pound. 



[Cotton tests at the botanical garden of Palermo], A. Bozzi (Bol. Mm. 

 Agr., Indus, e Com. [Rome], Ser. C, 10 (1011), No. 5, pp. 1-5). — The author 

 reports the results of variety tests of tree, Bulgarian, Mitafifi. and American 

 cottons, and hybrids of Trabut and of the colonial or botanical garden of 

 Palermo. 



Tests indicated that irrigation aided the development of the plant, but de- 

 layed the maturity of the bolls. The drought resistance of the plants leads 

 the author to predict a great extension of cotton culture. 



Fertilizing ingredients in Danish hay crops, R. K. Keistensen {Tidsskr. 

 Landbr. Planteavl, 18 {1911), No. Ji, pp. 5.'i3-569). — Chemical analyses are 

 reported showing the nitrogen, phosphoric acid, and potash contents of timothy, 

 rye grass, white, red, and alsike clovers, and of other grasses and legumes 

 grown at the Danish Experiment Station at Askov during the period 1905-1909. 

 The material was obtained from the exi)eriments with hay crops grown under 

 different systems of fertilization on clay, sand, and marsh soils. 



A note on onion couch, L. M. Underwood {Jour. Agr. Sci., Jf {1912), No. 3, 

 pp. 210-212, figs. Jf). — The author notes the difference of opinion as to whether 

 the bulbous form of Arrhenatheruvi avenaceum is entitled to specific rank and 

 states the results of pot tests conducted on various soils and under different 

 moisture conditions. From these tests, he concludes " that the habit of forming 

 bulbs is hereditary and does not depend on the conditions of the habitat. Other 

 than the bulbs, no differences in habit were noted between the 2 plants." 



Potatoes at Wisley, 1911 {Jour. Roy. Hort. Soc. [London], 31 {1912), No. 

 3, pp. 569-515). — Brief descriptions are given of each of more than 70 varieties 

 of potatoes tested. 



Six years' potato variety tests at Sindlingen, R. Adlung {Wiirttcmb. 

 Wchnbl. Landiv., 1912, No. 10, pp. 16Ji-166).—\ table states the yields of tubers 

 and starch obtained during each year of the period 1906-1911 in a test of 34 

 varieties. 



A new potato {Bui. Union Cent. Sgnd. Agr. France, 1910, Nov. 1, p. 3^1; 

 abs. in Intemat. Inst. Agr. [Rome], Bui. Bur. Agr. Intel, and Plant Diseases, 

 1910, No. 2, p. 2.'f8). — This article discusses a potato variety said to be resistant 

 to attacks of Phytoplitliora infestans. It is stated that the plants reach a 

 height of 2.43 meters. 



The thornless prickly pears, D. GRirriTHS {U. 8. Dept. Agr., Farmers' Bill. 

 .'i83, pp. 20, figs. Ji). — ^A statement of the geographical distribution of thornless 

 prickly pears and their moisture, temperature, and soil requirements accom- 

 panies directions for propagating, planting, cultivating, harvesting the crop, 

 and transporting the cuttings. Other topics discussed are varieties, the botani- 

 cal status of thornless prickly i:)ears, and the stability of the spineless character. 



