134 EXPERIMENT STATION RECORD. [Vol.37 



as a maximum gain of nitrogen from legumes, a small amount of soluble nitro- 

 gen is beneficial while large amounts are detrimental. 



A brief bibliography is given at the end of the article. 



Seeding small grains, C. G. Williams (Mo. Bui. Ohio Sta., 2 (1917), No. S, 

 pp. 76, 77). — Limited seeding experiments are reported with 8-in. and 4-in. 

 grain drills. 



An average of two years' tests with oats shows yields of 49.19 and 45.48 bu. 

 of grain and 3,020 and 3,080 lbs. of straw per acre for the 8-in. and 4-in. drills. 

 I'espectively. In tests with wheat in 1915, using a 6.5 and 4.5 pk. rate of 

 seeding, the respective yields for the 8-in. and 4-in. drills were 28.71 and 28.37 

 bu. of grain and 3,247 and 3,487 lbs. of straw. 



[Field crops] (Rev. Indus, y Agr. Tucumdn 7 (1916), Xo. 1-2, pp. 5-59, 

 figs. 16). — Extensive notes are given on sugar cane culture, together with brief 

 notes on maize, sorghum, cowpeas, and peanuts, in the Province of Tucumiin. 



[Field crops] (Jaarb. Dept. Landb. Nijv. en Handel Nederland, Indie, 1914, 

 pp. VI+SSl, pis. 16). — This is a general administrative report of the work con- 

 ducted at the various experimental centers of the Dutch East Indies. 



The cultivation of dry land, R. Escobar (Estac. Agr. Expt. Ciudad Judrez, 

 Chihuahua, Bol. 47 {1914), PP- 97, pis. 26). — This is an extensive publication 

 upon dry land farming in Mexico. The meteorological and soil conditions are 

 discus.sed in detail. Implements for dry land cultivation are described and 

 illustrated. Brief notes are given on a number of crops recommended for 

 growing in these regions, the most important of which are sorghum, beans, 

 corn, wheat, cotton, potatoes, peanuts, alfalfa, sweet potatoes, and canaigre. 



Field culture tests on peaty soils in 1915, H. von Feilitzen (Svcnska Moss- 

 kuUurffJr. Tidskr.. SO (1916), No. 3, pi,. 222-255 ) .—The experiments here de- 

 scribed were conducted in different sections of Sweden. 



The u.se of lime on various kinds of peaty soils gave quite diverse results, 

 due to varying soil conditions. Where the soil was well supplied with lime, 

 further lime applications remained without effect. In a test on soil with an 

 insufhciont lime content the influence of lime applications was still observable 

 seven years later. 



Yearly applications of fertilizer on pasture lands of this type were found 

 much more profitable than applications made from time to time. While the best 

 results on all fields were not secured from the same application, it was found 

 in general that it was best to use 100 or 200 kg. of superphosphate, or .300 

 kg. of Thomas slag, together with 100 or 200 kg. of potash salt per hectare. 

 The residual effect of nitrate of soda on grassland, even on soil of high nitrogen 

 content, was quite marked, which is considered as possibly due to Insuflicient 

 nitrification of the soil under ordinary conditions. Barnyard manure used for 

 oats also showed residual effects in one section, while In another it was 

 practically without effect after the first year. The increase in the yields 

 of root crops from the use of barnyard manure and fertilizers, which was 

 considerable, seemed to be determined by the excess of commercial fertilizers 

 over barnyard manure. 



The two varieties of oats giving the best results in this connection were Gold 

 Rain and Victory. The yield of preen forage was generally quite satisfactory, 

 while the yield of root crops was under the average. Of three varieties of 

 rape Munich proved the best. The yields of gra.«;s were also satisfactory 

 where frost did not interfere. 



[Culture experiments on moor soils at Flahult and Torestorp. Sweden], 

 H. VON Feilitzen {Svenska Mosskulturfor. Tidskr.. 29 (1915), No. 6, pp. 441- 

 47S, figs. 4; 30 (1916), Nos. 1, pp. 51-72; 2, pp. 119-159, figs. 6).— The results 

 of experiments here described showed that the beneficial effect of mixing 



