EFFECTIVENESS 
LINDANE provides effective control of the pickleworm. 
It also controls cucumber beetles, the melon aphid, and 
the melonworm. It is of some value against the squash 
vine borer. 
SEVIN, when properly applied, gives satisfactory pro- 
tection of summer squash and cucumber against the 
pickleworm, the melonworm, and cucumber beetles. 
WHEN TO APPLY 
Pickleworms usually do not appear in appreciable 
numbers in a cucurbit planting until the earliest flowers 
open. Examine the terminal buds and blossoms fre- 
quently. If you find pickleworms, apply an insecticide 
at once. Repeat the application every 7 days as long as 
the insect is present, which is usually to the end of the 
harvest period. 
In areas where experience has shown that the pickle- 
worm is likely to be present every year on late summer 
and fall plantings of cucumber, squash, and cantaloup, 
routine applications of the insecticide should begin each 
year shortly before the earliest flowers open. 
To obtain satisfactory control of the pickleworm, you 
must kill the young larvae before they tunnel into the 
terminal buds, flowers, vines, stalks, or fruits. Early 
and frequent insecticide applications are necessary. It is 
especially important that the plants be protected during 
their fruiting period. 
If possible, apply dusts when the air is calm or the 
wind velocity is no more than 3 miles an hour, and when 
the plants are moist. Don’t dust when the wind velocity 
is more than 5 miles an hour. Don’t spray when the 
wind velocity is high enough to prevent thorough cov- 
erage of the plants. Low-gallonage mist sprays are the 
ones most likely to be adversely affected by wind. 
EQUIPMENT AND RATES OF APPLICATION 
Apply dusts with ground equipment at the rate of 20 to 
30 pounds per acre. With aircraft, use 30 to 35 pounds. 
When spraying, use enough water to give thorough 
distribution of the insecticide throughout the foliage. 
The amount of water needed will depend on the equip- 
ment used. For most cucurbit crops, the approximate 
amounts of water needed are as follows: 
Gallons of water 
Equipment per acre 
ered EAE ER eee ek 20 
High-callonage sround sprayers=-.--.-2)-------- 75 to 100 
Low-gallonage ground sprayers 
