SPRAYING PEACHES. 18 
entirely prevented at a small cost. This has been abundantly dem- 
onstrated through experiments conducted by the Bureau of Plant 
Industry during the past three or four years.'| The schedule of ap- 
plications for the control of this disease, together with the brown-rot 
and curculio, is given on pages 38-40 of this bulletin. 
LHE PLUM CURCULIO. 
WHAT THE CURCULIO IS. 
The curculio is a small snout beetle of the family Curculionids», 
which contains many species of economic importance. The adult 
Fic. 5.— Peaches showing the exudation of gum from curculio punctures. 
insects vary somewhat in size, but will average about three-sixteenths 
of aninch in length. Figure 3 illustrates two beetles on a newly set 
peach, all considerably enlarged. In the course of its growth the insect 
passes through four stages, namely, the egg, larva, pupa, and adult. 
The larva, or grub, is the small whitish worm frequently found in 
ripe peaches, plums, and cherries and is well known to lovers of 
these fruits. 
There are many common names for this insect, such as the ‘‘plum 
curculio,” “plum weevil,” ‘peach curculio,”’ ‘‘peach worm,” “‘fruit 
‘ 
1 Circulars 1 and 27 and Bulletin 174, Bureau of Plant Industry, U.S. Dept. of Agriculture. 
440 
