DAYLIGHT FUMIGATION, COST OF APPLICATION 85 



24 the apparatus was used in the plum orchard during 

 the month of March . The buds had j ust begun to swell , 

 but no injury was noted, while the scale was destroyed. 



FIG. 44 JAPANESE PLUM TREE IN FULL FOLIAGE 



FUMIGATED IN OCTOBER 



In the fumigation of nursery stock, especially in the 

 house, it makes little or no difference at what time of 

 the day the trees are fumigated. 



Expert Opinion. There has been considerable dis- 



