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EXPERIMENT STATION RECORD. 



[Vol. 40 



more than wheat grown on wheat stubble. Liming the plats resulted in in- 

 creased yields of soy beans, cowpeas and oats, Canada field peas, and alfalfa. 

 Counts of the number of nodules on the roots of soy bean plants grown on both 

 limed and unlirned plats showed an average of 85 nodules per plant for the 

 former and 37 for the latter. The result obtained in cylinder experiments are 

 held to indicate that in most cases larger yields were obtained where nitrogen 

 was secured from leguminous green manure crops (grown between the main 

 crops) than from either nitrate of soda or stable manure. This was specially 

 noticeable in the case of corn. 



The potato fertilizer experiments were conducted cooperatively at Mt. Holly 

 and Elmer. The results of the first season's work indicate that an application 

 of 1,200 lbs. of a standard 4:8:3 fertilizer was as efficient in increasing yields 

 as the use of 1,600 lbs., and that a 3 per cent potash mixture gave better re- 

 sults than a 10 per cent mixture. 



What is the bulk of manure produced by the consumption of hay? J. A. 

 Voelckee (Jour. Roy. Agr. Soc. England, 78 (1917), pp. 2.' i .' t -^.' t 8; abs. in Chun. 

 Abs., 12 (1918), No. 20, p. 2105). — Experiments are reported in which eight 

 steers divided into four lots of two each were fed from December 29 to April 2, 

 as follows: Lot 1, a standard ration of bean meal 10U lbs., maize 190 lbs., roots 

 3.971 lbs., chopped straw 757 lbs., and hay ToJ lbs. Lots 2, 3, and 4 wire fed 

 the standard ration with the addition of l.lL'U lbs. of hay for lot 2, 1,099 lbs. of 

 palm-nut cake for lot 3, and 1,101 lbs. of malt culms for lot 4. All lots received 

 the same amount of bedding, 1,907 lbs. The more important results obtained are 

 given in the following table: 



Manure produced by tteert on <iiffcr< nt rations. 



The conclusion drawn from these figures is that a ton of bay consumed in the 

 yards will give 2.88 CU. yds. of extra bulk of manure, but that while cake fed in 

 the same way produces little increase in bulk of manure, namely, about 0.25 

 iu. yd. for every ton consumed, "foods of bulky nature, like malt culms, dried 

 grains, etc.. produce an even greater bulk of manure than hay dues (nearly 

 'A cu. yds. lor each ton consumed). Feediug with malt culms or dried grains 

 calls for more water to be given to bullocks than when hay is fed. The amount 

 of water taken with cake and with hay is about the same in either case." 



The triangle system for fertilizer experiments, O. Schkkink.k and J. J. 

 Skinnf.u (.lour. Amer. Boo. Aaron., 10 (1918), No. 6, pp. t2S 246, pi*. 3. jigs. 

 14). — In this paper, a contribution from the Bureau of Plant Industry, I . 3. 

 Department of Agriculture, a triangle system for representing different fertiliser 

 treatments, tirst employed by the authors in nutrient solution studies I El S, EL, 

 23, p. G24), is fully described anil its application to experimental work both with 

 nutrient solutions and in the field discussed and illustrated. With proper care 

 in planning the work, the method is thought to present a comprehensive basis 

 for the interpretation and the easy presentation and handling of the results. 



Manurial values of dairy feeds, U. I. Grady (Mo. Bui. <>hi<< stn.. 3 (1918), 

 No. 10. pp. $17, 318). — The author presents a table showing the ainouu. 



