LOSSES DUE THERETO. 97 
LOSSES DUE TO THE PLUM CURCULIO. 
It is difficult to make even an approximate estimate of the shrink- 
age in value resulting from the attack of the plum curculio on its 
several food plants. While adequate statistics are not available 
on which to make accurate calculations of the value of these several 
crops in the territory occupied by the insect, an attempt has been 
made to indicate as closely as possible the approximate annual money 
loss from the curculio. These data were published, as a part of an 
article on the losses from deciduous-fruit insects, in the Report of the 
National Conservation Commission, Volume IIT, page 309. In this 
article the figures for the apple crop were obtained from the American 
Agriculturist and other figures from the Twelfth Census. That 
portion relating to the curculio is quoted below. 
Average apple crop in the infested territory, 1897 to 1907. 
EVAR yas GL Sets Gea en ep ee tee sieereacece 34, 292, 700 
Estimated shrinkage of first-class fruit, 10 per cent..................--.. 3, 429, 270 
Ree eatten to) DOr WARNE on Ao ce nee ania Soe seks ae a eae abs 5 $4, 286, 587 
Valocorinn£ asculls, ai30 cents per barrel. .......--.5-.----.-.26-055 1, 028, 781 
Maieile scostio; apilens 8 sa hee oe spor ck Sok Soames = 3, 257, 806 
On apples this insect receives but little if any treatment aside from that given in 
codling-moth treatment. 
There are no available figures on the yield of peaches. It was thus necessary to 
determine this as accurately as possible on the basis of the number of trees, and a 
conservative yield which each should give. 
IRIs EPR RIE CORT ULONN es oro is 8 Scrat hap 5 a nies nine arniesnin cine ee an 90, 931, 542 
Assuming that one-fourth bear every year, producing an average of 1 crate 
Deritee valued at 5O\cents, net valuie..-\-....-....f..5222..2---2- $11, 366, 443 
Pemmedeuminimen loss of go per Cent. 4. 2-2 0ee: 02h bs~5sSi2 8-1. rs 3, 788, 814 
CeiGMNB rt RABe IATTING (OCS <2 2 = 2 Pees Se ee ween e o's Sac eens se 300, 000 
I ae oe Pe. UO Pale S21) deus fe 4, 088, 814 
There are likewise no figures on the yield of the plum, prune, etc., and the yields of 
these fruits were determined in a similar manner. 
iieere esreROd MPITILOD YS. 26 2. rece eons et oe Wahoos n Poe nike eee we ke 15, 906, 398 
Assuming that one-fourth bear fruit every year at the rate of 1 crate per 
Pa epUPaE PN ONNLA VAIO Tors ie Se 25 os, 0 nan o/s oa ek es Few pan ca whe cobs ss $1, 988, 299 
Peuueated annual loss of 50 per cent..: . 52.) so... seeeeed sie avoece ees 994, 149 
Moreno wealment, spraying, jarring, etc. .).2.- 2. 425 2+. ns twas sedeeesess 250, 000 
ene maleate SOR. . ease aay. Pills 1, 244, 149 
TOTALS. 
JU noes" oe a ee Sepretibe te cals ie: (sae pe eae $3, 257, 806 
mre een Si) sc ee Se ee 3, 788, 814 
Plum, prune, etc... ... Oly clos iat 0 te Ae eet ge ly ee 994, 149 
ie! ee Lists 20 Ne ee SO Se oe 8, 040, 769 
Dee Ger Ma CALEDON se SSC. 2. 5 coo ae a. RE oo ces ak 550, 000 
VEO DUS Se eens, 7. Soa es a 8, 590, 769 
