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Frankliniella Occident alls (Perg.), tne western flower thrips 
Same as for Thrips tabaci .— Smith (324 ) • 
Heroinothrips fasoiatus (Perg.), tiie bean thrips 
and kept over night.— Smith (324). ^ ^ 
Heroinothrips femoral is (Reut.), the "banded greenhouse thrips 
In greenhouse tests 100 percent control was obtained with 8 ounoes 
of DDT in a powder suspension and with 5 ounces in an aoetone suspension 
per 100 imperial gallons of water*— Ross (306) » 
SoirtothriPs citri (Moult,), the citrus thrips 
In preliminary tests DDT gave favorable results. — Baker and Porter 
(81) • 
The value of DDT for citrus insect control is yet to be determined. 
Although, its use in the control of citrus thrips and scale insects is 
promising, much more work on a large scale is needed.— Boyce (95). 
Taeniothrips inconsequens (Uzel), the pear thrips 
A block of 12 trees in a Bartlett pear orohard was sprayed to con- 
trol the thrips larvae. DDT in oil (2.5 quarts of 20 percent DDT in oil 
plus SH-20, an emulsifier, to 100 gallons of water) was as effective as 
rotenone or rotenone and oil in reducing the population. The DDT spray 
caused a spotted injury on the leaves.— Borden and Jeppson (93). 
At Hood River, Ore., adult pear thrips on pear trees were controlled 
by a spray of 4 gallons of light medium oil containing 4 peroent of DDT 
plus 2 gallons of Ortho ready-mix dormant oil per 100 gallons of spray 
applied in the bud scale drop stage. This mixture destroyed about 98 
peroent of the insects and remained effective for about 6 days. In an- 
other test this mixture wa3 applied at jf the dosage at very early pink 
stage. The average population of thrips in the DDT plots was 38 for 
each 25 blossom clusters, whereas 1225 insects were found on 25 unsprayed 
blossom clusters* No injury from DDT was observed and the results 
indicate that two-3pray program would give highly effective control.— 
Childs and Robinson ( ill ) . 
Gesapon No. 18, containing 5 percent of DDT in solution, was test- 
ed as a soil insecticide in 3 series of small plots. No thrips emerged 
