No. 4, February, 1922] AGRONOMY 231 



be alkaline; sandy loams may be used, if judiciously fertilized. The preparation of soil and 

 methods of cultivation of Virginia tobacco are discussed in detail. — E. M. Doidge. 



1519. Taylor, H. W. The tobacco industry. South African Jour. Indust. 4: 467-472, 

 563-574. PI. 1-3. 1921. — The total amount of commercial tobacco produced in Africa is 

 probably not above 70,000,000 pounds, of which the Union of South Africa produced 14,931,000 

 in 1918. Tobacco is grown in the Transvaal chiefly in the Magaliesberg area, in the Piet 

 Retief and Potchefstroom districts, and in the western part of the Cape Province. The 

 qualities of the Various types, mainly Turkish, cigar, and Virginia, grown in different dis- 

 tricts are discussed, and directions given for selection of seed and proper preparation of seed 

 beds. — E. M. Doidge. 



1520. TicE, C. The potato industry in British Columbia. Potato Mag. 4*: 8, 20-21 

 1 fig. 1921. — Favorable climate and soil and freedom from certain pests and diseases make 

 potatoes yield well in British Columbia. Improvement is expected from seed certification, 

 rules of which are given. — Donald Folsom. 



1521. ToNNBLiER, A. C. Informe sobre diversos metodos del cultivo del maiz. [Methods 

 of maize cultivation.] Bol. Ministerio Agric. Naci6n [Argentina] 25: 47-54. 1 fig. 1920. 

 This reports experiments to ascertain the best methods of cultivating maize, carried out over 

 a period of S years, 1909-1917. No difference in yields was noted between plots hilled and 

 those not hilled. Opening ditches or furrows between rows and gradually filling them gave 

 increased yields, while the system of ditches kept open between rows proved most satisfactory 

 of all. — John A. Stevenson. 



1522. Torres, L. G. Una leguminosa forrajera indigena. [An indigenous legtiminous 

 forage plant.] Rev. Agric. [Mexico] 6: 84-86. 2 fig. 1921. — Meibomia leiocarpa, a native 

 of Brazil and parts of Mexico, has given promise as a forage plant in Cuba and is recom- 

 mended for trial in Mexico. Brief cultural directions are given. — John A. Stevenson. 



1523. Vasquez, David. El trigo. [Wheat.] Rev. Soc. Rural Cordoba [Argentina] 20: 

 5090-5109. 1920. — Seed selection, hybridizing, and seed disinfection of wheat are discussed. — 

 John A. Stevenson. 



1524. Wagner, Paul. Die Diingung der Wiesen. [The fertilizing of meadows.] Arbeit. 

 Deutsch. Landw. Ges. 308. 141 P- 1921. — This report on 15 series of experiments in fertiUzing 

 meadows, carried on for periods of from 4-14 years, gives tables showing percentages of phos- 

 phoric acid, potash, and nitrogen in hay at 15 per cent moisture content, and total yield of 

 hay. The fertilizers used were forms of potash, phosphoric acid, and nitrogen in varying 

 combinations. Forty questions, covering all phases of the effects of various fertilizers, are 

 asked, and answered by the results of 1 or more series of experiments. In general both phos- 

 phoric acid and potash increase yields, but neither alone gives maximum results. The appli- 

 cation of one on soil deficient in the other is ineffective. Composition of hay may be taken 

 as an index to the fertilizer needs of the soil. Application of nitrates results in small and 

 unprofitable increases, the total nitrate content of the hay being no more and sometimes less 

 than that of hay produced on plots receiving potassium and phosphorus. This is explained 

 by the fact that nitrates however used encourage the grasses but suppress the legumes. — 

 A.J. Pieters. 



1525. Weiss, H. B. Field crop yields in New Jersey from 1870-1919. Sci. Monthly 13: 

 342-349. 1921. — Curves from 10-year reports of the last 50 years show a gradual increase in 

 the acreage of field crops in New Jersey. This is attributed to the intelligent use of fertilizers, 

 general efficiency, improved methods of soil management, seed selection, and increased con- 

 trol of insects and plant diseases. — L. Pace. 



1526. White, W. T. Report of work at Kodiak station. Rept. Alaska Agric. Exp. Sta. 

 1919: 55-65. PI. 14. 1920. — At Kalsin Bay the application of 10 tons of stable manure per 



