FIELD CROPS. 35 



an equal or greater number of bracteoles, the failure to grow out being due to 

 absence of seed. 



Seedless hops of the " Stirn " variety, similar in structure to the hop produced 

 in the best districts of Germany, were grown in England, but their coarse flavor 

 and poor cropping qualities indicated that they were useless to the English 

 grower. The pollination of a plant of the Saaz (Bavarian) variety by Canter- 

 bury Whitebine produced fruit which retained some of the Bavarian flavor of 

 the female parent. The average length of 50 hops was If in., while 3 averaged 

 nearly 2f in. and 75 bracteoles each. 



One (12-burr) lateral springing from either side of the same vine was dusted 

 with pollen and all were kept bagged. Practically all the burr had disappeared 

 from the pollinated hops after 7 days, when the untreated laterals remained in 

 full burr and showed some burr after IG days. 



Three tables present studies of the number of bracteoles, seeds, and length 

 per hop in English and German varieties. 



Tlie hop garden i,Jour. Southeast. Agr. Col. Wye. 1909, No. 18, p. 81). — The 

 yield of 9 cwt. of fair quality hops per acre followed an application of 3 cwt. 

 of superphosphate sown around the hills. The garden had been manured in 

 the winter with 30 cwt. of wool waste and in the spring with 6 cwt. of fish 

 guano per acre. 



Trials with mangel seeds from large and small roots with and without 

 selection, L. Helweo (Tidsshr. Lanilbr. Planteavl, 17 (1910), No. 1, pp. 110- 

 l.'i2, figs. J/). — The results of trials conducted during the period 190G-1909 are 

 presented and discussed in their practical bearings. 



Factors influencing the yield of oats, F. H. Demaree (Missouri Sta. Circ. 

 ■'i6, pp. 89~9S). — Discussions of the present status of oats and of the place of 

 the crop in rotation, are followed by directions for its production. 



In tests of 16 varieties conducted during 1905-1910 Siberian and Martins- 

 burg produced the highest average yields of 40.1S and 39.83 bu. per acre, 

 among the varieties tested 4 years or more. Red Rust Proof yielding 27.29 bu. 

 per acre in 1908 when all other varieties were ruined by rust. A table states 

 the characteristics of the varieties gi'own. In sowings of 8, 10, and 12 pk. 

 per acre, it was found that " the weight per bushel and the yield of straw in- 

 creases with the rate of seeding." The differences in grain yield were slight 

 Seed treated 10 minutes and 2 hours yielded 10.08 and 8.05 bu. more per acre, 

 respectively, than the untreated seed. 



Field trials with oat varieties, 1901—1908, K. Hansen and M. L. MoE- 

 TENSEN (Tidsskr. Laiidbr. Planteavl, 16 (1909), No. .'/, pp. 5.'f3-702). — Five Danish 

 plant culture stations conducted oat tests during 1901-1908. Detailed informa- 

 tion is given as to these trials, and tables state the yield of grain and straw, 

 the type of kernel, the percentage of hulls, and the chemical analyses of the 

 different varieties tested. The varieties are described and their value discussed. 



Tenth year's trials with root crops, L. Helweg (Tid.sskr. Landhr. Planteavl, 

 11 (1910), No. 2. pp. 2.13-270). — Trials were conducted at the Danish plant cul- 

 ture stations with 23 different strains of Barres mangels, 14 of carrots, 5 of 

 mangels, and 4 of ruta-bagas, giving results which are presented in tabular 

 form. 



The newer fertilizer tests with beet seedlings, L. Sempolowski (Bl. Zucker- 

 ruhenbau, 17 (1910), No. 5, pp. 85-88; abs. in Zentbl. Agr. Chem., 39 (1910), 

 No. 12, pp. 860, 861 ) . — The author reports the results of experiments conducted 

 to determine whether on the black soils of southwest Russia artificial fer- 

 tilizers may be replaced by poultry manure, wood ashes, and similar materials. 

 The entire field received an application of stable manure, and was divided into 

 10 plats. The fertilizer was applied under the plant. 



