. Studies on the tobacco crop of Connecticut . a. Cankered area extending on stem from ground b. Stem girdled under 14. Canker Disease of Tobacco. 54 Connecticut Experiment Station Bulletin 180. Calico, sometimes called the mosaic disease. Theexperiments of the Station botanist, Dr. Clinton, so farindicate that most of the calico on leaves of commercialvalue in the fields traces back to the seed bed or to infectionof the seedlings at the time of transplanting. To explainthis more clearly, it should be stated that calico is a disease

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