16 



THE MONTHLY BULLETIN. 



and with this end in view considerable work was done along this line 

 in the summer and fall of 1918. Most of the orchards were gone over 

 with Bordeaux paste, painting each trunk from the ground to branches 

 and pulling away any manure or anything else that would bank up 

 against the bark. Our inspection so far this summer — July 16th — 

 shows only 45 new cases of brown rot gumming in the 18,127 trees 

 covered. That this is quite a reduction in the amount of new gum 

 over previous years is shown in the Table 6 of six orchards on which a 

 three-year record is available. In fact, one orchard alone developed 

 nearly as many new cases in each of the preceding years as has been 



Fig. 6. — Isolating the gummeil area by two cuts ; 

 often effective but not as much so as in tlie case 

 of completely cutting out all infested bark. 

 (Photo by Fawcett. ) 



found this year in all the orchards inspected. In the newly budded 

 orange trees of another orchard, where, out of 300 trees left unpainted 

 and neglected with respect to the earth about the trunk, nine new 

 cases of new gum have been found this year, while in the rest of the 

 orchard of 1,500 trees only five new gum trees have shown up. The 

 results of the preventive measures tried out last year have thus suc- 

 ceeded far beyond our expectations, and should be continued each year 

 with a view to reducing the new gum to a minimum. 



