' introl During Fr\n- 3 iges of Plant Growth 
PC based chiefly upon the pc 
:'ruits of all 1st , 1 1 • I . irm- 
( sound) of all sizes anc , the number (and sor: 
es weight) fruits, and the degree of 
nts. ft that showed a picklewor 
e hole was classed as wo . | rom 7 to 11, usually 9 or 10, 
stings were made. Fruits from all plants on each plot were picked 
I days. All cucumbers remaining on the plants were included 
in the last harvest. Where all marketable fruits were not weighed, the 
er required for a bushel was determined at least twice each season, 
lined from comparisons of the various insecticides are 
given in table 3, and those obtained from use of the more promising of 
these materials at various application intervals are shown in table 4. 
Effects of certain insecticides on a moderate melon aphid infestation 
that in plots of the 1951 pic kleworm-control experiments we 
ermined by picking 10 leaves at random from each plot and separating 
them into the following classes: Free (no aphids), slight (1 to 20 aphid 
moderate (21-100 aphids), and heavy (more than 100 aphids). al 
values wereassigned to th< Lous classes as follows: Free 0, slight 1, 
moderate 5, and heavy 20. The number of leaves occurring in each class 
was multiple the numerical value of the class, and the product was 
adc tjive the infestation rating of the plot (table 5). 
In the following discussions tl I ious insecticides are evaluate 
. on the basis of the percent of tl 1 number of fruits h ted 
that were wormy (pukleworm inf< Some cor. , 
1 sound fruits produced, as well as 
eld of marketable , in inst .11 
ded as having given adequate pickli control when the 
wormy fruits did nol total. Unless 
•s of the in^- 
mixtun eight basis. 
A . 
<). Y\: . .d not 
of th< : 
R 
[equate com 
Ith lind 
it i lldrin .'■ 
■ • • 
