- 18- 
10 and 1934 J that adequate 
prot( and a fair -of control of 
picl Id be obtained by frequent applications of lead arsen. 
, or barium fluosilic . • I .m 
i is green, 'irum, and rotenone usually were less 
.iinst the pickli Sulfur proved to be of considerable 
,ie as a funj; an insecticide in the dust 
mixtur • 
[i 1948 Laboratory i age and field-plot i .merits were undertaken 
to develop i. rfective and safer measures for the control of the 
i associated insects. Lindane was the most ve 
givei sive trial. A 1 -percent lindane dust applied w 
at the rate of about 20 pounds per acre, or s iing a com- 
lent < ontrol of all insects present on <. ucumbers 
; squash. I here were indications, however, that the use of lindane 
during the fruiting period may impart a slight off-flavor or off-odor to 
• s, and that .eties of Irish potatoes may be similar 
immediately follows lihdane-treab 
\> hough tested less exten than lindane, proved o: 
slightly less ef: ■ against the pick m and as lindane 
to the melon aphid and the other insects. A purified grade of DDT us 
. ed inferior to lindane but superior to cryolite against the pickleworm. 
marked increase in the melon aphi lation often follov. 
the use of DDT an Aldnn, dieldrin, and endrin she »- 
siderable promise against both insects in limited tr 
Mes th 1 less effect Inst the pickleworm 
Ch] ilor, CS-674A, C'S , tetl sopro; 
I Ul , 7, h« and n: is 
nyl) sulfi( ono~ 
lai. 
Lethrin, and 
■ 
MX 
