Pasture insect control

Material Information

Pasture insect control
Series Title:
Circular, Florida Cooperative Extension Service ; 292-A
Strayer, John
Florida Cooperative Extension Service
Place of Publication:
Gainesville Fla
Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida
Publication Date:
Copyright Date:
Physical Description:
1 folded sheet (6 p.) : ill. ; 23 cm.


Subjects / Keywords:
Pests -- Control -- Florida ( lcsh )
Pastures -- Florida ( lcsh )
Insecticides ( jstor )
Wildlife damage management ( jstor )
Pastures ( jstor )
government publication (state, provincial, terriorial, dependent) ( marcgt )
non-fiction ( marcgt )


General Note:
"April 1971."
Statement of Responsibility:
John Strayer.

Record Information

Source Institution:
University of Florida
Holding Location:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
77623569 ( oclc )


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Full Text


Pasture Insect Control
John Strayer
Assistant Extension Entomologist
Probably the most important pests of p
grasses in Florida are spittlebugs, aphids
caterpillars. Other insects may become imp
at certain times in localized areas. This ci
covers some of these pests, recommending
best current controls considering, of course
insecticide residue problem.
Aphids-The yellow sugarcane aphid (I
1) is a major pest of pangolagrass. It is a
tial threat in all areas growing pangolagras
is of greatest importance in central and sou


Florida. The greenbug (also an aphid) is
in most areas, but unlike the yellow suga
aphid, it is highly parasitized and frequently
trolled by natural enemies.
Armyworms-(Fall, southern, striped, ot
-These caterpillars or "worms" are the i
ture stages of grayish-brown moths. Femah
their eggs on the lower leaves of grasses an
larvae begin to feed as soon as they hatch
cause they often move in large numbers fror
area to another in search of food, they are <
armyworms. Usually only one damaging ge
tion occurs per year. For successful control
to prevent extensive-damage treatment mu
made when the worms are small. The a
mature larvae (1 to 11/2 inches) are diffict
Grassworms or Striped Grass Loopers (se
kinds)-these caterpillars, when full grow
longer and more slender than the army
discussed earlier. They move in a looping m:
by humping their bodies. Striped grass loi
(Figure 2) are especially fond of pangola
para grasses. Their color varies from crea
blue-gray to brown, black or orange. Large

FIGURE 6. Mole-like burrows made by mole crickets.

tunnels in the soil (Figure 6). The burrowing loose
the soil and the crickets disturb and cut off grass root
In the spring the adult female places 30 or mo
eggs in each of 3 or 4 underground cells. Eggs hatch i
1 to 2 weeks during warm weather. The cricke
become adults by fall. There is one generation p

Insect infestations in pastures usually start i
small, isolated areas. Make frequent inspection
and spot treat before infestations become
widespread. This practice not only saves insecticidE
but also prevents extensive injury to the grass an(
reduces the residue problem. Recommended material
are listed in the Insect Control Chart.

The use of insecticides not recommended, or in
dosages greater than those recommended, may result
in insecticide residues in excess of legal tolerances. Ii
the dosages recommended in the chart are ex-

Tests for control have been limited, but toxaphene
or Sevin should result in a good kill of these pests when
applied to grass short enough for the insecticide to get
down to where insects are feeding. Insecticides have
not given effective control where the grass has been
allowed to grow tall and become densely matted.
Burning off the dense mat of dry grass in late
February or early March has been suggested for con-
trol of spittlebugs in Coastal bermuda pastures in the
central and northern areas of the state. If the pasture
contains clover, it can be burned late in the fall.
Recent observations suggest that mowing or graz-
ing often enough to keep down the dense mat will
reduce the spittlebug problem. The dense mat retains
moisture which is needed for spittlebug development.

Spider mites (on clover)-Spider mites cause
damage to clover pastures in some areas and require
control measures. Research has shown demeton (Sys-
tox) at /2 to 1 pint per acre of the emulsifiable con-
centrate (containing 2 lbs. active ingredient per
gallon) to be the most effective. Minimum interval
between last application and harvest or grazing should
be 21 days. Two applications of parathion 1 to 2 weeks
apart (as for aphids on control chart) can be used for
controlling mites on clover. Note the restrictions for
parathion in the control chart.

Mole crickets-At least two species of these odd
looking crickets, the Changa and the Southern mole-
cricket, are the most widespread and destructive to
pastures in Florida (Figure 5). These brownish crickets
are covered with very fine hair and have flattened,
shovel-like front legs. They usually grow to 1'/2 inches
in length.
Mole crickets make burrows resembling tiny mole

FIGURE 5. Most common mole crickets. Change (left), Southern
mole cricket (right).

Appreciation is expressed to various research scientists of tl
Institute of Food and Agricultural Sciences for information
included in this publication. Appreciation is also expressed to E. N
Beck, Entomology Research Division A.R.S., Tifton, Georgia, f
the spittlebug photographs used in this publication.
The use of trade names in this publication is solely for tl
purpose of providing specific information. It is not a guarantee
warranty of the products named, and does not signify that they a
approved to the exclusion of others of a suitable composition.

eded, the minimum time between last applica-
n and harvest or grazing specified in the chart
not applicable and a longer interval should be
Insecticides are poisonous to man and animals and
would be handled according to the precautions given
Sthe label. Parathion and demeton (Systox) are es-
ecially toxic.

Remember, always use recommended insec-
cides according to label directions and
Dlerance restrictions. Read the insecticide label
carefully and completely before opening the
container, and observe all precautions. Do not
contaminate feed and water. Store insecticides
a the original labeled containers out of reach of
children, pets, and livestock, and away from
'ood or feed. Dispose of empty containers
)romptly and safely.

This public document was promulgated at an
annual cost of $239.27, or $.048 per copy to in-
form rancher on pasture insect control.

(Acts of May 8 and June 30,1914)
Cooperative Etension Service, IFAS, University of Florida
and United States Department of Apiculture, Cooperating
Joe N. Busby, Dean