No. 2, September, 19211 AGRONOMY 99 



are discussed, likewise forage-crop investigations, including nurse crop experiments with 

 sweet clover, and a botanical study of the vegetative habits of Bromus inermis. Notes are 

 given on diseases of wheat and potatoes, disease control, barberry eradication, and resistant 

 strains of flax. — L. R. Waldron. 



640. Vargas, Leandro M. Cultivo del ramie. [Cultivation of ramie.] Rev. Agric. 

 [Mexico] 5: 507-51S. 8 fig. 1920. — A general account is given of the culture of ramie (Boeh- 

 meria nivea and related species), including geographical distribution, climatic and soil require- 

 ments, and botanical description. The method of preparing the fiber is described. — John A . 

 Stevenson. 



641. Vargas, Leandro M. Cultivo de la Sansevieria. [Sansevieria cultivation.] Rev. 

 Agric. [Mexico] 5: 5S3-585. 2 fig. 1920. — The growing of sansevieria (Sansevieria spp.) is 

 recommended for Mexico. A popular account of the plant and approved methods of cultiva- 

 tion are given. — John A. Stevenson. 



642. Walters, J. A. T. New crops for Rhodesia. Report on some of the experiments 

 conducted at the Agricultural Experiment Station, Salisbury, and the Gwebi Farm, 1919-1920. 

 Rhodesia Agric. Jour. 17 : 432^35. PI. 1-5. 1920. — Among the hay crops tested on the experi- 

 ment station at Salisbury and the experiment farm at Gwebi, Teff (Eragrostis abyssinica) 

 made the largest yield, 4,441 lbs. per acre. Kudzu, velvet beans, Boer manna (Setariaitalica), 

 summer oats, and Sudan grass yielded in the order named. Mixtures of 2 or 3 crops made 

 higher yields than any of the crops alone. The Niger oil plant {Guizotia oleifera), Sunn 

 hemp {Crolalaria juncea), Gotani bean {Canavalia gladiata) [error, = C. ensiformis], Kafir 

 beans {Vigna sinensis), black velvet beans {Stizolobium utile) [error, = S. aterrimum], 

 Florida velvet bean (Stizolobium deeringianum) , and ground nuts (Arachis hypogaea) were 

 tested as green manures and yielded in the order named from 29,040 to 7,920 lbs. per acre. 

 Among the cereals, Kherson oats and buckwheat were promising, the latter principally on 

 account of its freedom from disease. Eighteen varieties of Kafir corn, 34 of Dhal (Cajanus 

 indicus), and several of field peas were also tested. — H. N . Vinall. 



643. Warth, F. J. Annual Report of the Agricultural Chemist to Government, Burma. 

 Ann. Rept. Agric. Sta., Agric. Chem., Agric. Eng., Asst. Bot. Northern Circle, and Asst. 

 Entomol. Burma 1918-1919: 90. 1920. — Progress is recorded in investigations on rice soils; 

 and on Burma beans (Phaseolus lunatus L.). — Winfield Dudgeon, 



644. Werth, E. Ubersicht ilber die Kartoffelsorten, die sich bei den bisher in Deutsch- 

 land angestellten Versuchen zur Priifung der Widerstandsfahigkeit gegen Kartoffelkrebs 

 bewahrt haben. [Review of the potato varieties which have, in the experiments so far carried 

 on in Germany, retained their immunity to potato wart.] Mitteil. Deutsch. Landw. Ges. 36: 

 262. 1921 . — The author lists a total of 52 varieties of potatoes and gives in tabular form infor- 

 mation as to skin, flesh, form, total number of experiments, and degree of infection. — A. J. 

 Pieters. 



645. WiERtrp. Anbauversuche mit Bohnen. [Culture experiments with beans.] Mitteil. 

 Deutsch. Landw. Ges. 36: 245-249. 1921. — Reports are given from 6 different stations on 

 tests of a number of varieties of field beans. — A. J. Pieters. 



646. Young, Thomas. Flax growing in Scotland. Trans. Highland and Agric. Soc. 

 Scotland 22: 79-100. 1920. — The history of flax growing in Scotland and its reestablishment 

 during the war are discussed. — //. V. Harlan. 



647. ZuRCHER, F. A. Non-setting of Uba seed. South African Sugar Jour. 5:245. 1921. — 

 The Uba sugar-cane arrows freely in Portuguese East Africa (the Zambesia and Quilimane 

 districts) but the flowers are sterile. For 4 years experiments have been made in which 

 every means and care were taken to obtain fertilization, hut no seed has set. — C. Rumbold. 



