Everglades Station Mimeo Rpt. EES64-19


 CONTROL OF SOIL INSECTS AND SWEET CORN INSECTS/ '

 Enmett D. Harris, Jr. 2/

 The results shown in this report are not intended as insect control
recommendations. One should refer to Florida Agriculture Extension
Circular 1930 or consult the County Agent, Experiment Station Entomologist,
or the insecticide label for insect control recommendations.


 SOIL INSECT CONTROL

Experiment I Screening Test for Southern Potato Wireworm, Conoderus
fall Lane, and Corn Wireworm, Melanotus communis (Gyll), Control.
Insecticides were applied broadcast on October 10, 1963, and immediately
disked into the soil to a depth of about 6 inches. Florigold 107 sweet
corn was planted on October 11.


Insecticide Formulation


Stauffer N-2788 10% gran. 40 Ibs.
Stauffer N-2790 10% gran. 40 lbs.
Thimet 10% granules 40 lbs.
Dibrom (8 lb/gal) E 0.5 pt.
Phosphamidon (4 lb/gal)Spray 1.0 pt.
Untreated --


 Live Wireworms/100 plants
 Southern
Amount Potato Corn
per Acre Wireworm Wireworm Total


0
0.5
0
5.0
4.0
10.0


5.0
9.5
3.5
7.5
16.0
5.0


5.0
10.0
3.5
12.5
20.0
15.0


Plants/Acre
 ,000
 26
 27
 29
 25-
 .27
 27


 The above figures for wireworm populations were based on observations
on three dates. On October 25, Thimet seemed to be highly effective but
seemed to have lost its effectiveness by November 27.


Experiment II Diazinon and Kepone Formulations and Aldrin Spray for
Wireworm Control. Insecticides were applied broadcast on October 4,
1963, and immediately disked-in to a depth of about 6 inches. Florigold
107 sweet corn was planted on October 11.
 (Table on the next page.)


1/ Prepared for presentation at the Annual Vegetable Crops Field Day
 held at the Everglades Experiment Station, May 7, 1964.

2/ Associate Entomologist, Everglades Experiment Station, Belle Glade,
 Florida.