TOBACCO WILDFIRE IN 1922. 27 



as Bordeaux mixture at all times, from the stage when they are as large 

 as the finger nail until setting is completed. 



7. Remember that the germs can be carried from one bed to another 

 on the hands, tools, sash, etc., and avoid such chances. 



8. Adopt a system of bed management which will keep the leaves moist 

 during the shortest length of time compatible with the production of good 

 plants. 



9. If the disease appears in certain spots in the bed, these spots, along 

 with a broad margin of plants which appear healthy, should be killed by 

 drenching with Vio formaldehyde. 



10. Pull plants for setting only from disease-free beds. 



11. Starting as soon as the plants have recovered and begun to grow 

 in the field, make frequent inspections and remove every diseased plant 

 from the field. 



12. Do not work in a field where there is any wildfire while the leaves 

 are wet. 



13. Removal of diseased leaves at intervals of three or four days, where 

 the infection when first found is light, will reduce the number of centers of 

 spread and may materially reduce the percentage of wildfii-e in the crop 

 when harvested. 



14. Rotate tobacco with other crops if practicable. 



PUBLICATIONS ON WILDFIRE CITED IN THIS BULLETIN. 



(1) Chapman, G. H., and Anderson, P. J. Tobacco Wildfire. Preliminary report 



of investigations. Mass. Agr. Exp. Sta. Bui. 203: 67-81. 1921. 



(2) Clinton, P. G., and McCormick, Florence A. Wildfire of Tobacco in Con- 



necticut. Conn. Agr. Exp. Sta. Bui. 239: 365-423. 1922. 



(3) Fromme, F. D., and Wingard, S. A. Blackfire or Angular Leaf Spot of Tobacco. 



Va. Agr. Exp. Sta. Tech. Bui. 25: 1-43. 1922. 



(4) Wolf, F. A., and Moss, E. G. Diseases of Flue-cured Tobacco. N. C. Dept. 



of Agr. Bui. 40 (12): 24-34. 1919. 



