-134- 
Satisfactory control resulted when cube was used in oil in de- 
layed dormant spray.— St einer and Worthley ( 567 ) • 
Tetranychu8 paclficus McG., the Pacific mite 
The most effeetive summer spray in 1939 was Selocide* Rotenone 
oompounds and various combinations of sulfur were somewhat less ef- 
fective, but gave satisfactory oontrol when applied before infesta- 
tion became severe* Of sprays applied in the summer of 1940, those 
containing rotenone materials were effective against the mites but 
not against the eggs*— Webster and Moore ( 665) j Webster and coworkers 
(667)* 
Tetranychu8 spp*, the oomnon red spiders 
The dust, made of Cuprooide (G. A*) 6 percent, dusting sulfur 30 
peroent, derris (5 percent of rotenone) 15 percent, and pyrophyllite 
49 peroent, was effective in oontrol of downy mildew, and red spider* 
—Cunningham (131) • 
A spray consisting of derris powder, pyrethrum extract, and sul- 
fonated castor oil with water was effective against red spiders*— 
Howard and coworkers (294 , p* 31) • 
To control the Mexican bean beetle and red spiders, if the latter 
are present, the following was recommended: 4 pounds of derris, cube, 
or timbo (5 percent of rotenone) in 100 gallons of spray, or 40 pounds 
of dust, with the addition of sulfur, or a copper compound if fungus 
diseases are to be controlled* Sprays containing 12 pounds of wettable 
sulfur per 100 gallons alone or with 4 pounds of cube powder, and 
dusts of 50 peroent of sulfur, alone or with 10 percent of cube, ap- 
plied four times at intervals of 10 to 12 days, were extremely effec- 
tive.— Huckett (299 , 500 ) . 
Rotenone is relatively more effeotive than nicotine against the 
common red spider*— Isely (311, p* 25)* 
To oontrol the red spider on roses apply oopper-rotenone dust* 
— MoDaniel (379). 
RS-380, a vegetable and petroleum oil solution of rotenone and 
other derris extractives, tested against the red spider, gave effeo- 
tive control of the mites and their eggs within 4 days*— Parker (456) • 
Control measures for this pest comprise two or more applications 
of a sulfur dust, or of sprays containing wettable sulfur, derris, or 
