232 EXPERIMENT STATION RECORD. [Vol. 41 



ing appropriate fertilizers poorly drained land may I)e converted into profitable 

 liay land witbin a comparatively short time and with a small outlay of money 

 and labor, either as a permanent improvement or as a step toward the further 

 development of the area for jirowiug cultivated crops. 



Brown hay, W. A. Linklater (Washington Sta., West IT'os/i, Sta. Mo. Bid., 7 

 {191D), Xo. .1, pp. ?,8, SD). — The preparation of so-called brown hay, in western 

 Washington, under weather conditions adverse to the proper curing of ordinary 

 hay, is briefly described. The material is cut about the time of heading out in 

 June and cui*ed until in prime condition for cocking, when it is placed in a 

 stadc, either in the barn or outside and firndy packed. The stack is said to heat 

 considerably, the curing process continuing from 30 to 60 days. The hay is 

 described as dark brown or black in color, nutritious, and palataltle. 



Cassava experiments, 1916—1918, .T. de Verteuil (Bvl. Dcpt. Af/i: Trinidad 

 and Tohafjo, 17 (WIS), No. Jf. pp. y.O.?-/.0,S).— Variety, cultural, and fertilizer 

 tests with cassava are described in continuation of work previously noted (E. 

 S. II., 38, p. 530). 



Yields of roots ranging from 5.53 to 8.59 tons per acre for Mamau I'Enfant 

 and Sellier, respectively, were secured in the variety tests. Level cultivation 

 with the plants spaced 3 by 3 ft. continued to give the best results. Sellier 

 planted the latter part of April and harvested 17 months later produced 10.77 

 tons of roots containing 15.2G per cent starch, as compared with 1.42 tons of roots 

 and 12.35 per cent of starch from a planting made the latter part of March and 

 hai'vested 6 months later. Plantings of the same variety made about the middle 

 of April and harvested from 6 to 17 months later showed a range in yiehl of 

 from 2.02 to 8.88 tons of roots per acre, respectively. The percentage of starch in 

 the roots appeared to be little affected by the age of the plant eight months 

 after planting, increasing from 7.86 per cent for roots harvested at 6 months of 

 age to 22.03 per cent for those harvested when 8 months old. The maximum 

 percentage of starch, 27.62, was attained in roots harvested 11 months after 

 planting, but the yield of roots was only 6.4 tons. The maximum yield of 

 starch, 4,708 lbs. per acre, was secured from roots 14 months of age. 



Applications of pen manure at the rate of 20 tons per acre and of a com- 

 plete fertilizer at the rate of 300 lbs. per acre resulted in average yields of 13.45 

 and 10.90 tons of roots per acre, respectively, as compared with 4.85 tons from 

 the checks. The low yields of the latter are thought to be due to shading by the 

 fertilized plats. 



An attempt to develop improved strains of cassava from seed in 1916 resulted 

 in six seedlings which gave sufTicient promise to justify their further propaga- 

 tion by cuttings. The yields secured from single plants at about 19 months of 

 age ranged from 4.75 to 25 lbs., representing yields of from 10.26 to .54 tons per 

 acre from plants spaced 3 by 3 ft. 



How to increase Indiana corn yields, A. T. Wiancko (Indiana Sta. Circ. 

 01 (11)19), pp. 20, fiffs. 10). — Stating that the area devoted to corn in Indiana 

 should be reduced and that the average yield could be materially increased, the 

 author maintains that more attention to seed selection, crop rotation, and soil 

 fertility will produce the desired results. The selection, storage, and testing of 

 seed corn, the place of the crop in the rotation and the maintenance of soil 

 fertility, field practices and cultural methods employed in growing the crop, and 

 insect pests and diseases affecting corn in Indiana are discussed in a general 

 manner. 



Comparison of yield of Minnesota No. 13 corn from seed grown under dif- 

 ferent conditions, Vj. B. Stookey (Washiutiton Sta., M'cst. Wafth. Sta. Mo. Bui., 

 7 (1019), Nu. 1, pp. 5, 6), — Cooperative tests with Mimiesota No. 13 corn, said 



