FIELD CROPS. 843 



exception gave better results with 11 varieties of tobacco than home- 

 grown tobacco seed. 



Other data are included on the growth of sugar cane, cowpeas, forage 

 crops, and grasses and clovers. 



Results of fertilizer experiments -with sulphate of ammonia, 

 Kloepfer {Fii/dhufs Laiidw. Ztg., Jfd {1900), i\^j.y. 10, jjp. 376-384, 

 figs. 3; 11, pp. 396-}fiG,fi,(js. 3; l^,p)p' Ji-36-Ii..!iIJ,fig8.2). — The results 

 obtained in fertilizing potatoes, sugar beets, and fodder beets with 

 different amounts of sulphate of ammonia are reported, the data being 

 considered from the standpoints of yield and linancial gain. With 

 potatoes the best yields of 4 varieties tested and the largest financial 

 gains were obtained with the variety Prof. AVohltmann, when 200 kg. 

 of sulphate of ammonia was applied per hectare. The yield was at 

 the rate of 26,384 lbs. per acre and gave a net profit of lOl.YO. In 

 the case of sugar beets, the largest yield of beets and tops was obtained 

 by the application of 400 kg. of ammonium sulphate per hectare, but 

 the greatest amount of sugar was obtained from the plat where only 

 300 kg. per hectare had been applied. 



The varieties Tannenkriiger and Eckendorfer were used in the 

 experiment with fodder beets. The greater yield was afforded by 

 Tannenkriiger when ammonium sulphate was used at the rate of 400 

 kg. per hectare. 



Fertilizer experiments \vith Thomas slag and nitrate of soda 

 supplementary to barnyard manure, Lilienthal {FaJduufs Landu:. 

 Ztg.,Ji.9 {1900), No. 7, pp. 265-270, fig. 1, plan i).— Experiments were 

 made in supplementing liberal applications of barnyard manure for 

 white cabbage, fodder beets, and a species of cabbage-turnip, with 

 applications of 400 and 800 kg. of Thomas slag per hectare, of 200 kg. 

 of nitrate of soda, and of a mixture of 200 kg. of nitrate of soda with 

 800 kg. of Thomas slag. The experiment was conducted on marsh 

 soil, which proved detrimental to the best working of the nitrate of 

 soda. Both the smaller and the larger applications of Thomas slag 

 alone gave largely increased and financially profitable yields with each 

 of the different crops grown. The use of 800 kg. of Thomas slag and 

 200 kg. of nitrate of soda, while giving slightly increased yields with 

 fodder beets and cabbage turnips, was accompanied in each instance 

 by financial loss. It is concluded from these experiments that supple- 

 menting the phosphoric acid of stable manure with Thomas slag is 

 desirable. 



Inoculation of soils, G. W. Herrick {Mwxissipjyi Sta. Bui. 63, 

 pp. 11, figx. 2). — In the experiments here recorded hairy vetch ( Vicla 

 villosa) was sown on 3 contiguous plats of soil at the station suppos- 

 edly free from root tubercle germs. The first plat was inoculated with 

 soil taken from an old field in which vetch had been previously grown. 

 The inoculated dirt was scattered in the drills after the vetch had been 



