1019] FIELD CROPS. G2f) 



pared to show the relative yielding capacity of the dlfferenl crops. A tabulated 

 siuniiiiiry of yields of wheat and rye at t i \ « ■ Danish experiment stations la also 

 presented. 



It is shown that in southern Sweden on day soils wheal produced yields per- 



ce|itii)iy higher than those of rye. The difference In yielding capacity, greatest 

 on the fertile soil in Skfine, decreased northwards so that in middle Sweden 

 the yielding capacity of the two crops was practically the same. Results se- 

 cured in Denmark on lighter and somewhat sandy soils showed thai in BOme in- 

 stances wheat and in others rye produced the heavier yields. Among spring- 

 sown crops barley, at least under relatively favorable conditions, as compared 

 with oats pave the higher yield of hulled grain. Spring wheat ranked clearly 

 below barley in yielding power, and appeared capable of competing with oats 

 only under the most favorable conditions. Of the different root crops beets 

 ranked highest in yield on good soils in southern Sweden, but on the heavier 

 and somewhat colder soils rutabagas followed quite closely. In middle Sweden 

 rutabagas stood first, and beets were hardly able to compete successfully with 

 turnips. Potatoes approached rutabagas in yielding capacity and surpassed 

 turnips and carrots. Red clover gave relatively high yields, while timothy 

 stood comparatively low in production. 



[Culture experiments with root crops], P. Krosby (Ber. Norges Landbr. 

 lli'nskoles Virkft., 1916-11, pp. 7-33, pis. 5, pig. 1). — The results of cooperative 

 experiments with rutabagas, field beets, carrots, turnips, and potatoes are re- 

 ported in tables and discussed. 



In the conclusions drawn, it is stated that under favorable conditions of 

 growth root crops produce a greater quantity of feed than is secured from 

 other crops grown in the regions concerned. The results indicated that root 

 crops are capable of responding profitably to heavier fertilization of the soil 

 and better cultivation than they usually receive. This seemed specially true in 

 the case of the slow-growing crops. In general the largest yields were ob- 

 tained from potatoes, whieh also suffered least from drought. It was observed 

 that beets and rutabagas, as compared with potatoes, required somewhat higher 

 temperatures during the growing period and also were in need of more moist- 

 ure. Rutabagas also preferred a little heavier soil. In yield these two crops 

 stood a little under the potato, but in the production of fodder units a little 

 above it. Beets gave satisfactory yields only with careful cultivation and in 

 the southernmost sections having a favorable climate and a fertile soil. 



[Report of field crops work in Madras, 1916-17 and 1917-18] (Rpt. 

 Dept. Agr. Madras, 1916-17, pp. 5-10, 31-56, 66-69; 1917-18, pp. 7-13, 18, 20-25, 

 80-83, 93-9-i). — This describes cultural, fertilizer, and variety tests with sugar 

 cane, rice, cotton, miscellaneous grain and forage crops, peanuts, and indigo 

 at numerous experimental centers. The annual reports of the Government 

 sugar cane expert and of the Government seed potato farm at Nanjauad are 

 appended. 



The principal forage crops of Brazil, A. da Silva Neves (Ann. I. Conf. Nac. 

 Pecuaria [Rio de Janeiro], 1917, pp. 77-91, pis. 7). — In connection with a re- 

 port on the First National Cattle Conference, some of the principal grasses 

 and legumes used for forage are briefly described and illustrated. 



Concerning cereals [in Argentina], A. C. Tonnelieb (Min. Apr. Xae. 

 [Buenos Aires]. Dir. Gen. Ensenanza e Invest. \>ir. [Pub.], Xo. 74 (1917), pp. 

 77, figs. 19). — Agronomic data are presented relative to varieties of wheat, 

 barley, and rye grown during 1914 and 1915. 



Statistical notes on cereals (Intirnnt. Inst. Agr. [Rome], Bur. Static., 

 Statis. Notes on Cereals, 8 (1918), pp. 108, fig. 1). — Statistical information is 

 presented dealing with yield, trade, consumption, prices, and rates of ocean 



