| Material Information
||Control of chinch bugs on lawns
||Gulf Coast Station mimeo report
||3 leaves : ; 28 cm.
||Kelsheimer, E. G ( Eugene Gillespie ), 1902-
Gulf Coast Experiment Station (Bradenton, Fla.)
||Gulf Coast Station
||Place of Publication:
||Chinch-bugs -- Control -- Florida ( lcsh )
Grasses -- Diseases and pests -- Control -- Florida ( lcsh )
||government publication (state, provincial, terriorial, dependent) ( marcgt )
non-fiction ( marcgt )
||Statement of Responsibility:
||Florida Historical Agriculture and Rural Life
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Copyright 2005, Board of Trustees, University
GULF COAST STATIOt iMIIlO REPORT 54-7
CONTROL OF CHINCH BUGS ON LAWNS
E. G. Kelsheimer
The chinch bug is a sucking insect and its damage to St. Augustine grass is
especially noticeable during dry weather. The injury to lawn appears as yellow or
brown areas usually first along driveway, walks and curbing. Disease, nematodes and
physiological disturbances may cause this discoloration and death of grass. Many
tons of insecticides have been applied to areas that did not have chinch bugs.
The best way to find the bugs is to float them out of the grass with water.
To do this sink a tin can into the grass far enough to hold water. Use a stiff-sided
metal can with a sharp edge. Press the can down into the turf with a circular motion.
The edge of the can must be sharp and plenty of weight must be applied to it for St.
Augustine grass runners are tough. Fill the can with water and wait for a few minutes
to observe any insects that float to the surface. After satisfying yourself that
chinch bugs are present, proceed to treat your lawn immediately. You will thereby
save yourself a lot of work and expense later on.
You will have much more trouble from chinch bugs in a thick-matted turf than
in now lawns or unfertilized lawns. It will be necessary not only to use more insect
cide but also to apply it more frequently on these deep turfs.
There are several good chinch bug killers that the homeowner can purchase
DDT: DDT is a good, dry weather insecticide. Some people have good results on a
thin-turfed lawn with fresh five percent or ton percent DDT dust, applied at the
rate of one pound per 100 square feet. DDT spray can be applied at the rate of one
and one-half ounces of 50 percent DDT wettable powder to 10 gallons of water for 100
square feet of lawn. The lawn should be watered after the spray application.
C1HLORDMA : Chlordane has been most widely used on turf in Florida. It is very effec-
tive against chinch bugs when used correctly and at the proper time. Many people be-
lieve that chlordane is not.offective, usually because they used the wrong formulation
or did not apply it correctly. Do not use a 5 pc0oent dhiordane dust or a ferti-
lizer containing chlordane on a lawn fof chinch bug control. These formulations
are very good against webwoims, ar'iywoim, hhtd, cutworms and mole crickets but
not against chinch bugs.
Chlordane is available in other formulations, including emulsifiable concen-
trates, wettable powders and granules. Very little of the wettable powder is used
for chinch bug control, but the emulsions and granules are now used extensively and
are giving good control when properly applied. Chlordane emulsion can be purchased
in two concentrations. The formulation contaiining 70 to 80 percent chlordane should
be applied at the rate of one-half ounce to 100 square feet with sufficient water to
wet down thoroughly. The 47 percent emulsion is applied under the same conditions
but an ounce to 100 square feet should be used.
Chlordane in a 5 percent granular form is especially well adapted for small
areas and spot treatments. The label should show that the material has been prepared
from an emulsion. Apply the granules at the rnto of 1 pound to 100 square feet dur-
ing the hottest part of the day. Water the treated area thoroughly that evening or
the following morning, since chlordane is ineffective if used under dry conditions.
Chlordane is not a fast killer. It may be necessary to repeat the application in 7
to 10 days to kill hatching nymphs and insects missed at :.he firstt ppication.
DIELDRIN: Another insecticide that has received approval for use on lawns is diel-
drin. Dioldrin is slow in killing but has a long residual effect. One application
should be sufficient if properly applied, but a second application is often mado bo-
cause of its slow action. The concentration of the granular formulation should be
2.0 percent of dieldrin. This material is applied at the rate of 1 pound to 100
square feet. The 15 percent emulsion is applied at the rate of 2 ounces per 100
square feet. Add sufficient moisture to effectively wet down the lawn.
PARATHION: The question is often asked concerning the use of parathion on the lawn.
At the present time there is no recommendation for the use of parathion by the home-
owner. However, parathion is used effectively by commercial operators who know how
to use it safely and have proper equipment, sudh as face masks, protective clothing
and gloves. Wo wish to point out a few precautions to those commercial operator,:
Do not apply parathion on a windy day. Keep children and pots away while the opora-
tor is at work. Children and pots must stay off treated promises for an hour or at
least until the grass is dry.
Chinch bugs can be controlled if proper measures are used in time. No
amount of pesticide will bring back a lawn practically dead from neglect. For those
who intend to leave for the summer, either make arrangements for some competent yard
man to take care of your premises or give your lawn an overall treatment before you
Completely surround your promises with a 3 foot barrier of your preferred
insecticide to protect your lawn against the invasions of chinch bugs from untreated
or neglected areas surrounding you. This barrier is an extra treatment of the same
material. Chinch bugs are usually very weak fliers, so it is necessary for them to
crawl or be carried from one area to another.
One question frequently asked is whether to treat only the affected spots
or to treat the whole lawn area. Spot treatments are effective for homeowners who
can watch their lawns fr-m day to day. Complete coverage of the lawn with the insec-
ticide is recommended to the commercial operators and to absentee owners.