- 17 - 
are suita."ble for usr as cprrirr?. Lime sh-uld not "be usc-d for this pur«~- 
pos9,"b'^cau55e it ^;r-atlr reduces thr- ef f Fcti'-rncss of thes*^ insecticidp?;. 
Kanson and Wetster ( 178 ) in 1038 recom-iended derris cr cuoe dust 
(0,5 prrcent of rotenone) or spray (O.Ol percent of rotenone) for the 
control of the raspberry or loganberry fruitworm, B. uMcolor. Three 
applications should he mare, the first 10 days after hlossoms ar^pear 
and the others at 10-day intervals thereaftr-r. 
At the New York Courty Agents Training School (299) held in 
Ithaca, N. Y. , on December I9, 193S, it was reported that rotenone gave 
very good results against the raspberry fruitworm. Reports from Washington 
State indicate tl-^,t good results were obtained with three rotenone sprays, 
the first 10 days aft-r bloom and the last two at 1-ia.y intervals. Under 
Hudson Valley, N. Y. , conditions the applications would ha-'e to be made 
much earlier than this. 
The United States Bureau of Entomologj'' and Plant Q;uarantine ( 79g ) 
in 1938 reported that continuf^d insecticide tests against the raspberry 
fruitworm in the Puyallup Valley, Wash. , showed th^t satisfactory control 
of this pest could br obtained with t^irer- timely applications of sprays 
or dust mixtures containing rotenone, and that in general the sprays were 
superior to the dust mixtures in controlling the fruitworm. 
Landis and Baker (255) iA 1^39 reported that of 50 Puyallup V-i.lley 
raspberry growers who were Questioned) ^^-6 used insecticides containing 
rotenone in combating B. unicolor in I938. Of the growers who used dust 
mixtures containing rotenone, 63.6 percent made one application, 27.3 made 
two, a,nd 9»1 percent made throe. Of the growers vrho used sprays contain- 
ing rotenone, slightly more than half mac'.e one application and none ^.ade 
more than two. Judging from all available information satisfactorv con- 
trol of the raspberry fruitv^orm was obtained with two applications of the 
sprays or two or three a^'plications of the dust mixtures, timed and applied 
properly. These results coincided in general with the results obtained in 
experimental plots, which indicated that sprays containing 0.01 percent of 
rotenone were slightly better than dust mixtures containing 0.5 percent of 
rotenone, and that three applications of these insecticides were superior 
to two, 
Byturus sp. 
The Wagenin^en Plantenziektenkundigen Dienst (U02) in I933 reported 
that rotenone suspended in water 1:5,000 and derris powder at a concen- 
tration equivalent to rotenone at 1:2,500 ga'-e very good results against 
Byturus on raspberry. 
Cantharidae 
Canthari 3 ( Telephcrus ) ap. 
Killed by one application of '.erri^. dust containing 0.5 p'^rcent of 
rotenone an^. 1.2 percent of rther extrartiveq. — DeBus^- et al,(6l) in 1Q"^6. 
