332 



EXPERIMENT STATION RECORD. 

 Transpiration ratios of various fltid crops. 



Crop. 



Wheat 



Barley 



Oats 



Linseed 



Sarsou ( Brassica campestris )... 

 Peas 



Gram ( Cicer arielinum) 



Maize 



Juar ( Andropogon sorghum) 



Murwa {Eleusine coracana) 



Kodo {Paspalum scrobindatum) 



Arhar ( Cajanus indicas) 



Guar ( Cyamopsis psoralioides) . 



Cold weather crops. 



Monsoon crops. 



Un ma- 

 nured. 



Manured. 



850 

 680 

 870 



1,000 

 740 

 830 



1,400 



Unma- 

 nured. 



550 

 480 

 550 



1,000 j 

 620 

 530 



1,000 



Manured. 



450 



400 



250 



300 



1,000 



1,100 



330 

 400 

 250 

 300 

 600 

 600 



Swedish methods of crop improvement, G. H. Clark {Ottawa: Govt., 1910, 

 pp. 111-121). — This is a report of observatlous made during a visit to England, 

 Scotland, Holland, Denmark, Sweden. France, and Germany for the purpose 

 of studying the methods of seed production and croi) improvement. 



The rotation experiment in Rosenthal, K, von Rijmker et al. {Mitt. 

 Landiv. Inst. Breslau, 5 {1909), No. //, pp. .'fil-GL'i, figs. 2). — The author gives 

 a preliminary report on six different systems of crop rotations followed since 

 1900 and presents in tabular form the data thus far collected. 



[Variety and other tests of field crops], C. A. Zavitz {Ann. Rpt. Ontario 

 Agr. Col. and Expt. Farm, 35 {1909), pp. 166-230, figs. S).— The 1908 report has 

 been previously noted (E, S. R., 21, p. 325). 



Selected strains of IG varieties of oats, barley, wheat, rye, millet, and tield 

 beans produced yields higher than those of the standard varieties by O.G to 

 12.6 bu. per acre, except in two cases in which the selected strains fell slightly 

 below^ the standard varieties. Slight sprouting in the field checked the vitality 

 of the grain as seed. Twelve separate tests with winter wheat showed a yield 

 greater by 6.8 bu. per acre from large than from small seeds, 7.8 bu. from 

 plump than from shrunken seeds, and 35.6 bu. from sound than from broken 

 seeds. Seed thoroughly ripened before harvesting produced greater yields of 

 grain and straw as well as grain with a greater weight per bushel. Plump 

 seed produced 7.8 bu. more per acre in the case of barley and 5 bu. more in case 

 of spring wheat than shrunken seed. Sound grain surpassed broken grain in 

 yield by an average of 10.6 bu. per acre in 6 years' tests with barley, and by an 

 average of 19 bu. per acre in 9 years' tests with peas. 



In a test of the bluestone, the hot water, and the immersion and sprinkling 

 formalin treatments of grain for smut, it appeared that the greatest yields of 

 winter wheat and oats per acre followed the immersion of seed in a formalin 

 solution for a period of 20 minutes. The Early Ripe oats proved almost abso- 

 lutely free of smut during the period 1902-1909, inclusive. The other 5 

 varieties were more frequently infected during the first half of the test when 

 they were left untreated. 



Flax produced the longest straw when less than 1 bu. of seed was used but 

 the greatest yields of straw and grain when from 2 to 3 bu. of seed per acre 

 were sown. The results of experiments in which oats were planted by hand at 

 different distances are only partially reported at this time. Among 12 varieties 

 tested the number of stools per plant ranged from 6 in the case of the Early 

 White Jewel to 22 in the case of the Burt variety. Increase in distance between 



