
ae 
Field work in Japan.--G. J. Haeuesler, in charge of ov-iental fruit 
Moth parasite investigations, Yckchama, Jagan, reports that in Jure he 
scouted for twig-feeding larvae in 56 localities on tke three princiral 
islands of Japan—-Honehu, Shikcku, and Kyushu--and also in three provinces 
in Chosen (Korea). A total of 42,283 infested twigs were cbtained from 91 
collections and forwarded to Yokohama for rearing of rarasites. Scme 
5,282 parasite larvae or cocoons were obtained frcm which by the end’ o£ 
the month 1,580 adult parasites were cbtained, representing 1l tyres. All 
information relative to such emergence is being carefully recorded erd in— 
dexed as a basis for future field collections. Mr. Haeugsler also re= 
ports the preparation of laboratory collecticns of yarasite material in 
the immature and adult stages, duplicates of which are being forwarded to 
Moorestown, N. J., and the locating and mapping of fruit-grcwing areas. 
Effect of sunshine on red scale.--Lillian Baird, Whittier, Calif., 
reports results of sun and shade experiments with tre red ecale: "The data 
accumulated to this time (July) seem to indicate that during ihe winier 
months a larger proportion of the ecales survive in the eun than in the 
shade. With the ccming of warmer weather the reverse is true, even to 
the point of practically complete kill of the rewly establisked ecales 
exposed directly to the summer sunchine."(Chrysorphilus aurcntii M sk.) 
Prepollination spraying of pecans.--Hcward Faker, Shreverort, La., 
Submits a summary of the season's work in the prepollinaticn epraying of 
pecans. The experiments were made in cooperaticn wiih J. R. Cole, of ihe 
Bureau of Plant Industry "con a emall scale during the ceason of 1930 and 
enlarged upon in 1931. Except for one small test no damage was caused 
in the tests carried out during these two years. During the present 
season the work was expanded and all applicaticns were mede with a pewer 
Eeravyer..*'*,* .No-injury of any kind reeulted to either ire foliage or 
the tender nut clusters. The ravages of the ingects precent were controll— 
ed and infection of diseases delayed or prevented. As a result cf ilese 
prepollination tests, conducted over a three-year yericd, it is ocncluced 
that pecan trees can be sprayed with safety even wren ycung, terder pis-— 
tillate blocm is present. * * * In the tests corducted ihis year a l- 
tc-50 calcium arsenate spray controlled ike insects present at ihe time 
the spray was applied and a 2-35-50 Bordeaux mixiure was sufficiently 
strong to delay or prevent disease infection," 
————— a a A 
Se 
Oliver I. Snapp and J. R. Themson, Fort Valley, Ga., have ccmpleted a cer— 
ies of experiments for the control of the plum curculio (Conotrackelvs 
nenuphar Hbst.). Notwithstanding certain difficulties (including a light 
crop and a belated change in experimental plats because of tke unex-— 
pected loss of the crop in the portion of orchard Originally celected), 
the results appeared rather clear cut and indicated that barium flucsil- 
icate and potassium fluosilicate are approximately equivalent to lead 
arsenate in effectiveness and that cryolite is nearly as effective. 
Potassium fluosilicate, however, caused considerable injuiy to tke fruit 
