338 EXPERIMENT STATION EECOED, [Vol. 36 



Plains area in both yield and quality. The selections may also prove valuable 

 as material for crossing with varieties possessing greater rust resistance and 

 higher quality. 



Red Rock wheat, F. A. Spkagg and A. J. Clark {Michigan Sta. Circ. 31 

 (1916), pp. 3-7, figs. 3). — This circular is an extension of Bulletin 268 (E. S. R., 

 28, p. 141), continuing the results given in that publication up to 1916. Red 

 Rock is especially recommended for Michigan for its winter hardiness, high 

 yield, stiff straw, and its high quality for bread. 



Methods of sov^ing Poltavki spring wheat, A. L. Golodets {Besenchuk. 

 Selsk. Khoz. Opijtn. Sta., No. 63 (1915), pp. JfO). — In experiments with Poltavld 

 spring wheat sown broadcast and in drills 10.5 and 14 in. apart, the drilled 

 seed came up better than that sown broadcast. The wheat in drills 14 in. apart 

 made a more vigorous and leafy growth than that in drills 10.5 in. apart, but in 

 quality was not quite so good, as the grains were smaller and not so well filled 

 out. The soil moisture at the time the heads were forming was the higher in the 

 field with the wider spacing in the drills. A test of different rates of sowing 

 gave the best results from the use of 7 pood per dessyatine (about 1.5 bu. per 

 acre). 



Nitrogenous fertilizers in wheat culture, L. Malpeaux (Vie Agr. et Rurale, 

 4 (1915), No. 46, pp. 4I6-4I8). — The results of experiments are reported on the 

 use of nitrate of soda and sulphate of ammonia, applied singly or in combination 

 and in varying quantities and on different dates as fertilizers for wheat. Ap- 

 plications were made on the fifteenth day of each of the months of November, 

 December, January, February, March, and April. The best results were obtained 

 from the applications made in February and March. The yields of grain and 

 straw obtained on the different plats in the various series are tabulated. 



A seed-testing key, A. H. Cockayne (Jour. Agr. [New Zeal.l, 13 (1916), No. 

 2, pp. 129-131). — Tables compiled from analyses and tests of some 10,000 

 samples of seeds during the past four years, and giving the progressive average 

 germination of the principal kinds of seeds sent in, are presented for the pur- 

 pose of indicating the final germination and value of a particular lot of seed 

 when the percentage of germination on a given day after the beginning of the 

 test is known. 



Contribution to testing the germination of grass seeds, F. Kling (Jour. 

 Landw., 63 (1915), No. 4, pp. 285-3^3). — This article discusses the development 

 of seed control work and its present status, the process of germination and the 

 conditions which influence it. and the methods of making purity determinations 

 and germination tests, and reports the results of germination tests with 14 

 species of grasses. 



The tests conducted showed that while most of the seeds of some grasses 

 germinated in about ten days, the seeds of other grasses required from three 

 to four weeks. In summarizing the results, the grouping of the more important 

 meadow grasses according to the yearly periods of principal development after 

 seeding, as given by other investigators (E. S. R., 28, p. 632; 32, p. 330) is 

 briefly outlined. 



The results further indicated that the grasses developing early and quickly 

 also germinate in shorter periods than those reaching full development later. 

 The author bases the following grouping on the time required for germination : 

 (1) Short germinative period, Plileum pratcnse, Avena elatior, Bromus mollis, 

 Agrostis stolonifera, Lolium italicum, Ij. pererme, Festuca pratensis, and Dae- 

 tylis glomerata; (2) medium germinative period, Holcus lanatus, Alopecurus 

 pratensis, Anthoxanthum odoi-atum, and F. ovina; (3) long germinative period, 

 Cynosurus cristatus and Poa pratensis. 



