TOBACCO RESISTANT TO BACTERIAL WILT 7 



recently developed 6 should be grown wherever this disease occurs. 

 Oxford 26 is recommended only for soils on which wilt occurs. In 

 the absence of wilt, one of the other varieties would be preferable. 



The leaves on the lower part of the plant tend to break if handled 

 roughly, and the first two primings should be handled with reason- 

 able care. 



Rotations are being generally used on wilt-infected farms, and this 

 practice should be continued in combination with Oxford 26. Among 

 crops that considerably reduce the severity of bacterial wilt are corn, 

 cotton, redtop, crotalaria, cowpeas, soybeans, or lespedeza, and it is 

 suggested that some of these be grown for 2 years between tobacco 

 crops. A systematic program of rotation planned to meet local 

 needs will help maintain high yields and at the same time reduce 

 the hazard from other tobacco diseases. For more detailed informa- 

 tion on rotations, the reader is referred to a recent Farmers' Bulletin. 7 



SEED SOURCES 



Foundation tobacco stocks are being maintained by the Tobacco 

 Branch Station at Oxford, N. C. Certified growers under the super- 

 vision of the North Carolina Crop Improvement Association are pro- 

 ducing seed for commercial distribution; in 1944 they produced 

 enough seed for approximately 40,000 acres. 



e Bullock, J. F., and Moss, E. G. strains of flue-cured tobacco resistant to black shank. U. S. 

 Dept. Agr. Cir. 682, 9 pp.. illus. 1943. 



7 Clayton, E. E., Gaines, J. G., Smith, T. E., and others, control of flue-cured tobacco root 

 diseases by crop rotation. U. S. Dept. Agr. Farmers' Bui. 1952, 12 pp., illus. 1944. 



U. S. GOVERNMENT PRINTING OFFICE: 1945 



