236 AGRONOMY [BoT. Absts., Vol. VIII, 



[Fortieth and forty-first annual reports of the Swiss seed testing station at Oerlikon-Zurich.] 

 Landw. Jahrb. Schweiz 1919: 38-77. 1919. — The reports include: (1) A repost of the seed 

 testing station for the years 191P-17 and 1917-18, with a summarized statement of the results 

 of seed tests from 1876 to 1918; (2) a brief review of cultural tests with field crops conducted 

 by the station 1917-18; and (3) a report of work on the control of plant diseases and of weeds 

 during 1917 and 1918.—/. D. Luckett. 



1619. Vosz, G. Vergleichende Versuche zur Bekampfung von Hederich und Ackersenf 

 mit chemischen Mitteln. [Comparative tests of chemicals for the control of hedge-mustard 

 and charlock.] Fiihling's Landw. Zeitg. 69: 226-234. 1920. — Results of experiments with 

 kainit, Ca(N03)2, a mixture of kainit and Ca(N03)2 in half the full amounts, FeS04 and 

 (NH4)2S04 for killing hedge-mustard {Raphamis raphani strum) and charlock {Sinapis arven- 

 sis) in fields of oats. The first 3 materials were dusted on the plants in powdered form early 

 in the morning while the plants were heavily covered with dew, at the following rates per 

 hectare: Kainit, 1000 kgr.; CaCNOa) 2, 140 kgr.; mixture of 500 kgr. kainit and 70 kgr. 

 Ca(N03)j. The FeS04 and (NH4)2S04 were applied at the rate of 150 kgr. per hectare in 25 

 per cent solutions sprayedontheplantsjustbefore noon. — The most satisfactory results in all 

 cases were secured with (NH4)2S04 solution. In addition to killing the mustard, the solution 

 showed a marked fertilizer effect in increasing the yields of oats. The other materials also 

 gave satisfactory results except that in one case FeS04 solution partly damaged the oats, 

 causing a somewhat reduced yield. Next to (NH4)2S04, Ca(N03)2 produced the greatest 

 increases in yield of oats. To get satisfactory results with the powdered chemicals there 

 should be a heavy dew, which should not evaporate too quickly. — A. T. Wiancko. 



1620. Walster, H. L. Which variety for North Dakota? [Part of: "Practical pointers 

 on North Dakota farming."] North Dakota Agric. Exp. Sta. Ext. Div. Circ. 40. 3-8. 1920. 

 — The author recommends varieties of spring wheat, oats, barley, corn, flax, potatoes, sun- 

 flowers for silage, hay and pasture crops best adapted to North Dakota conditions. — L. R. 

 Waldron. 



1621. Walters, J. A. T. Fibre crops. Deccan hemp (Hibiscus cannabinus) and Sunn 

 hemp (Crotalaria juncea). Rhodesia Agric. Jour. 17: 522-528. Fig. I-4. 1920. — Experimen- 

 tation has demonstrated the fact that both Deccan hemp and Sunn hemp see to thrive on 

 the common red and granite soils of Rhodesia under conditions suitable for maize. Both 

 plants are sources of valuable commercial fiber. The adaptability of the 2 crops to Rhodesian 

 conditions makes them highly desirable as constituents in a system of rotation with maize 

 or tobacco. — Mary R. Burr. 



1622. Whittet, J. N. Farmers' experiment plots. Grasses and clovers for the North 

 coast. Agric. Gaz. New South Wales 32: 135. 1921. — Rhodes grass (C Moris gayana), elephant 

 grass {Pennisetum purpureum), canary grass (Phalaris bulbosa), Chilean clover {Trifolium 

 pratense perenne), and Bokhara clover (Melilotvs alba) were planted on a private farm for 

 comparative trial. No results are given. — L. R. Waldron. 



1623. Whittet, J. N. The production of lucerne seed. "With some reference to lucerne 

 culture in our drier districts. Agric. Gaz. New South Wales 32: 105-112. 16 fig. 1921.— 

 Alfalfa trials are under way at Bathurst and Cowra experiment farms and include varieties 

 and geographic strains as follows: Tamworth Broad Leaf, China, Cossack, Semipalatinsk, 

 Montana, Kansas, Bathurst Nos. 6 and 9, and Grimm. The author discusses pollination and 

 the need for testing for purity and vitalitv. Results of purity test are given; also informa- 

 tion for seeding, harvesting, and threshing the crop.— L. R. Waldron. 



1624. Williams, C. O. Composition and valuation of fertilizers and feeding stuffs. Jour. 

 Dept. Agric. Union of South Africa 1 : 368-382. 1920.— This is a critical account of the various 

 fertilizers and feeding stuffs at present on the South African market. — E. M. Doidge. 



1625. Winters, R. Y., and V. R. Herman. Soybeans for the Piedmont and mountain 

 sections of North Carolina. NorthCarolina Agric. Ext. Service Ext. Circ. 111. 15p. 1921. — 

 An agronomic study of the comparative value of soybeans and cowpeas for seed and hay. — 

 F. A. Woir. 



