FIELD CROPS. 133 



At Loachapoka on soil badly infected by wilt or black root, Cook No. 307-G, 

 yielded Sg as much lint as the nearest plat of common cotton; Covington- 

 Toole ?>i times as much; Cook from Hall about 2-| times as much; Excelsior 

 Wilt-Iiesistant 21 times as much ; and a hybrid cotton nearly 2i times as much. 

 When wilted plants were carefully dug and thoroughly burned, and the soil 

 for several feet around saturated with formalin (4 oz. to 1 gal. of water) 

 the disease was not again noted, and this treatment is considered advisable 

 when only a few plants are affected. 



Does better cotton seed pay? M. Nelson (Arkansas Sta. Circ. S, pp. /}). — 

 Suggestions on the choice of a cotton variety are accompanied by directions for 

 obtaining better seed. 



Fighting the boll weevil, W. E. Hinds (Alabama Col. Sta. Circ. 6, pp. 7). — 

 This circular calls the attention of cotton growers to the fact that if the 

 cultural methods as outlined are practiced there will be little difficulty in pro- 

 ducing increasingly profitable cotton crops in spite of the boll weevil. 



Destroying boll weevils by clean farming, W. E. Hinds (Alabamu Col. 

 Sta. Circ. 7, pp. S). — This circular outlines methods for combating the boll 

 weevil and directs attention to the fact that if the stalks are destroyed by 

 October 10 each year as good crops of cotton can be made as in the past and 

 that if other improved practices are adopted, as suggested in this series of 

 circulars, the average yield of cotton in the State can be greatly inci-eased in 

 spite of the presence of the boll weevil. 



Flax growing in Montana, A. Atkinson and D. B. Swingle (Montana Sta. 

 Circ. 6, pp. 9-lG). — This circular gives directions for growing and harvesting 

 flax and for combating the wilt disease. 



A comparison of nitrate of soda and ammonium sulphate as fertilieers 

 for oats, H. Svouoda (Ztschr. Landw. Yersuclistv. Osterr., 13 (1910), No. 10, 

 pp. 812-828). — The experiments here reviewed were carried on cooperatively 

 in 1909 and the results are reported in tabular form. 



The yields on the check plats, or those receiving no fertilizers, varied from 

 770 to 3.240 kg. per hectare of grain, the average being 1,653 kg. (1,471 lbs. per 

 acre), and the corresponding yields for straw were from 1,190 to 3,840 kg., 

 with 2,930 kg. as the average for 9 tests. Plats receiving 300 kg. of superphos- 

 phate and 100 kg. of potash salts produced a general average of 1,8SG kg. per 

 hectare of grain and 3.364 kg. of straw. On plats which in addition to this 

 application received 145.2 kg. of nitrate of soda per acre, there was an increase 

 of 495 kg. of grain and 942 kg. of straw as compared with the unfertilized 

 plats and of 262 kg. of grain and 508 kg. of straw as compared with the plats 

 receiving superphosphate and 40 per cent potash salt. These results from 

 nitrate of soda were better than those secured from the use of 108 kg. of 

 ammonium sulphate per hectare, but the financial results were in two cases in 

 favor of the use of the sulphate. 



Winter oats for the South, C. W. Warburton (U. S. Dept. Agr., Farmers' 

 DuL J/SG, pp. 32, figs. 9). — The author deals with the comparative value for the 

 South of winter and spring oats, winter oat varieties, their soil, fertilizer, and 

 climatic requirements, and use in rotation. Directions are given for the prepara- 

 tion of the seed and seed bed, sowing the seed, later treatment of the land, and 

 harvesting the crop. Other topics discussed are improvement of the crop, in- 

 sects and diseases, and the use of the grain, straw, and of the growing crop for 

 pa.sture and other purposes. Tables state the average acreage, yield, and value 

 of the oat crop and the average acreage and value of oats, corn, and wheat in 

 the Southern States for the 10 years from 1900 to 1909. 



Potatoes, T. S. Parsons (Wyoming Sta. Bui 86, pp. 20, figs. 5). — In a test of 

 varieties of potatoes Pierce produced the highest average yield, 260.4 bu. per 



