CONTENTS. 



Introduction, .... 



Investigations necessary, 



Is the tobacco crop actually failing, . 



Weather factor in tobacco growing, . 



Soil relations, .... 



A study of the reaction of normal and sick soils as indicated by the 



requirement," 

 Humus or organic matter content of Massachusetts tobacco soils, 



Cover crops, .... 



Tobacco diseases, . 

 In the seed bed, 

 In the field, 



Thielavia root-rot investigations, 



Fertilizer experiments in progress. 



Miscellaneous observations. 

 Other root-rots. 



Mammoth types of Cuban and Connecticut Havana tobacco 

 High pressure versiis low pressure seed-bed sterilization. 

 Vitality of tobacco seed, ...... 



Top-dressing tobacco seed beds with dry ground fish, . 



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Summary, 



37 



