19181 FIELD CROPS. 135 



Corn planting and cultivation in Montana, A. Atkinson and M. L. WrLSON 

 (Montana Sta. Circ. 61 (1917), pp. 101-128, figs. 29).— The preparation of the 

 seed bed, time and method of planting, and the cultivation of corn are discussed 

 in some detail and types of corn planters and cultivators illustrated. 



[Cotton in Brazil] (Primeira Conferencia Algodoeira. Rio de Janeiro: Soc. 

 Nac. Agr., 1916, pp. 18; Lavoura; Bol. Soc. Nac. Agr. [Brazil, 20 (1916), No. 7, 

 pp. 53-81). — This is a report of the proceedings of the First Cotton Conference 

 of Brazil and includes a classification of the commercial types of cotton in 

 Rio de Janeiro. 



How to increase the potato crop by spraying, F. H. Chittenden and W. A. 

 Orton (U. S. Dept. Agr., Farmers' Bui. S6S (1911), pp. 22, figs. 25).— This out- 

 lines approved methods of control of the Colorado potato beetle, blister beetles, 

 flea-beetles, cutvporms and caterpillars, leafhoppers, aphids, late and early blight, 

 and other foliage diseases. Directions for preparing and applying sprays are 

 given and spraying appliances noted. Other methods of control are also briefly 

 described. 



The effect of growing radishes on the succeeding maize crop, H. B. Annett 

 (Agr. Jour. India, 12 (1911), No. 1, pp. 151, 152). — Observations of marked de- 

 terioration in the corn crop grown on that portion of a field which had produced 

 radishes during the cold weather are briefly noted. Analyses of surface soil 

 and subsoil as to available phosphoric acid and potash did not show sufficient 

 differences to explain the depression. 



Eight years' experiments with new varieties of oats, K. ViK (Aarsber. 

 Norges Landbr. Hoiskoles Akervekstforsok, 21 (1915-16), pp. 115-134). — The 

 results of experiments in progress from 1909 to 1916, inclusive, with 29 varie- 

 ties of oats, including many of the newer sorts, on 71 fields in different parts 

 of the country are reported. 



The highest average yield of grain, about 70 bu. per acre, was secured from 

 Klokke II, a cross between Guldregn and Klokke. Stormogul, which stood first 

 in straw production with 4,462 lbs. per acre, also ranked high in the yield of 

 grain. Guldregn, followed closely by Tartar King, ranked first in weight per 

 bushel, with 41.4 lbs., and last in hull content, with 23.6 per cent. A brief 

 description of the performance of each variety is given. 



Ragi, L. C. Coleman (Mysore Agr. Calendar, 1911, pp. ^2-^6). — Manurial, 

 cultural, and seed-selection tests with ragi (Eleusine coracana), the staple food 

 crop of Mysore, are briefly noted. Green manuring with sunn hemp has given 

 larger and cheaper returns than fertilizing with cattle manure. Fall plowing 

 or early spring plowing is deemed essential to successful production. 



Sugar-cane experiments for the season 1914 to 1916, J. R. Bovell and J. P. 

 d'Albuqueeque (Barbados Dept. Agr., Rpt. Sugar-Cane Expts., 1914-1916, pp. 

 80). — Fertilizer and variety tests with sugar cane are reported in continuation 

 of work previously noted (E. S. R., 32, p. 831). 



Sulphate of ammonia again gave the highest net return of the nitrogenous 

 fertilizers, $90.53 per acre. In the phosphate series, a net gain of $110.88 was 

 obtained from an application of 100 lbs. of basic slag, and in the potash series, 

 100 lbs. of potash as sulphate was highest with $94.92. The difference between 

 the highest and lowest yielding plats for the period was 42.2 per cent. 



The testing of seedling and other canes was continued as heretofore with 

 White Transparent as the standard variety for comparison. The average yield 

 of this variety in the black soil district, from 19 plats, was 6,610 lbs. of musco- 

 vado sugar per acre. The highest yielding seedling variety was B. 4578, with 

 10,531 lbs. for one plat, representing a monetary gain of $141.55 per acre over 

 White Transparent. 



