-~ 2 = 
DECIDUOUS-FRUIT INSECTS 
In connection with the technic of handling the apple-—plug meth— 
od of insecticide tests against the codling moth, E. H. Siegler, Tokoma 
Park, Md., reports that "we are now placing an unhatched egg with each 
apple plug instead of a newly hatched larva. This plan is a most con- 
venient and satisfactory one, especially since we are now securing Oovi- 
position on waxed paper instead of on pear foliage. It is a simple mat— 
ter to cut off a small piece of paper on which an egg has been deposited 
and to enclose it with an apple plug. This procedure insures the use of 
a newly hatched larva and obviates any possibility of injury to the larva." 
Reporting on spraying experiments for the codling moth at Vin- 
cennes, Ind., F. H. Lathrop says: " A study of the chart (submitted) in— 
dicates that arsenate of lead alone was more effective against codling 
moth thanarsenate of lead with hydrated lime. The addition of fish 
oil to arsenate of lead and lime in the third and fourth applications 
(secqnd and third cover sprays for first brood) greatly increased the ef— 
fectiveness of the insecticide. The summer oil sprays for the second 
brood do not show up well. There is reason to believe that the negative 
efficiency shown on the chart is not accidental. The low percentage of 
efficiency of the applications as a whole is striking." 
Mr. Lathrop also reports that emergence of adults of the first 
generation was light during the period of July 1 to 11, with a slight in- 
crease during the week ending July 18. During the remainder of the month 
there was a rather steady, moderate emergence of adults. The first larvae 
of the second brood began leaving apples about July 25 to 27. 
W. P. Yetter, jr., Vincennes, Ind., reports that "twig infesta— 
tion (oriental fruit moth) continues to be light except in a few orchards. 
Moth catches are rapidly increasing, indicating a possibility of some com— 
mercial damage to Elberta, Hale, and Krummell peaches. The normal time of 
harvest will be a little later this year. Larvae are beginning to enter 
fruit to the extent that about 2 per cent of the crop is infested in the 
more heavily infested orchards. :The oriental fruit moth population is 
lighter now than it was at this time last year but appears to be rapidly 
building up in spite of the drought which has existed for a number of 
weeks. Twig infestation is light in both the molasses—citral and methyl 
cinnamate—brown sugar blocks. The moth catch also continues to be light 
but is rapidly increasing." 
L. F. Steiner, Cornelia, Ga., says: "Second—brood adult (ori- 
ental fruit moth) emergence and hatching of third-brocd larvae were con— 
fined almost entirely to July. Fourth—brood larvae are expected to begin 
hatching before August 4. Elberta peach harvest will begin August 3. 
The drought in late May and June appears to have affected Oriental fruit 
moth development more than anticipated. Second—brood adults were only 
one and a half times as numerous as those of the first brood, in spiteof 
the fact that second-—brood twig injury was five times as abundant as 
first brood." 
