48 



AN ENTOMOLOGICAL CALENDAR. 



Figs. 37 and 38.— Two Buffalo tree hoppers occurring in Minnesota. Fig 37 after 

 Bureau of Entomology, U. S. Dep. of Agriculture. Fig. 38.— After Riley. 



Burn all trash not destroyed in the fall. 



Plowing- this month will turn up the pupae of army worms 

 and other cut worms, and is still advisable as treatment for the 

 Hessian fly and w ire worms. 



Fig. 39. — Pupa of Army worm. 



MAY AND JUNE. 



Early in May complete any April work prevented by unfa- 

 vorable weather. Between May ist and loth, and later look 

 out for cut worms. 



Spray nursery and orchard trees with Bordeaux just before 

 the blossoms open in the orchard (and the same date in the 

 nursery), using it at the strength of 4-6-50. Repeat imme- 

 diately after all bloom has fallen, adding Paris green to the 

 Bordeaux for leaf-eating caterpillars, Codling Moth, Plum 



