INDEX. 



Sawdust, hydrolyzed, for dairy stock 

 Soil fertility, influenced by micro-organisms 

 Soil potash, availability of . 

 Spray materials, nature and use . 

 Copper fungicides 

 Lime-sulfur .... 



New materials .... 

 Nicotine sulfate dusts . 

 Scalecide ..... 

 Squash vine borer in Massachusetts, control of 

 Control ..... 



Cultural and hand methods 



Insecticides .... 

 Cost of treatment v. expected profits 

 Description .... 



Distribution and importance 

 Enemies ..... 

 Injury — nature of . . . 



Life history and habits 

 Summary ..... 

 Station herd, record of . . . 



Station staff ..... 



Changes in . 

 Station work: 



Capitalization of . 

 Control and regulative service 

 Diagnostic and analytical service . 

 Important results of the year 

 New work ..... 

 Report on projects 

 Tobacco, effect of cropping systems 

 Tobacco wildfire in 1922 



Control — condensed recommendations 

 Control measures 



Destroying diseaf5ed areas in bed 



Dusting the plants in the field 



Picking off diseased leaves 



Removing all plants from a diseased field and resetting 



Roguing without resetting 



Spraying and dusting seed-beds . 



Spraying with Bordeaux mixture in the field 



Sterilization of sash and plank . 



Sterilization of seed . 



Sterilization of soil in the seed-bed 

 Introduction .... 



Progress in investigations . 



Wildfire in the Connecticut Valley 



Wildfire in other sections . 

 Life liistory studies 



Dissemination .... 



Occurrence of lesions on midribs 



Occvu-rence of lesions on stalks . 



Overwintering of the bacteria 



Relation of the condition of the plant to infection 

 Outlook for 1923 .... 

 Publications on wildfii'e cited in this bulletin 

 Variety tests: 



Hubam v. biennial sweet clover 

 Timothy v. fescue .... 



Tree characters of fruit varieties 

 Varieties of tree fruits .... 



with healthy plants 



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