a. 0% Frost-B-Gone application.
b. 20% Frost-B-Gone application.
Figure 3. Leaf color variations in the treated-vs.-untreated area were recorded 48 hours after frost.
frosting; the FBG contained the gel agent only in
RESULTS
the first series of two frostings. Two subsequent
In all studies, frost was observed on the leaf
tests on separate sod pieces consisted of a single
surfaces of the control plants (0% FBG treatment).
application (without gel) and frosting. A final
Similarly, leaf damage--browning of leaves--
series consisting of one application (without gel)
occurred in the compressed area for all control
and two frosting cycles (the sod was irrigated but
treatments (0% FBG). The details of experimental
not re-treated with FBG before the second frost-
design and leaf injury in the compressed areas for
ing) was conducted to test the residual effects of
each frosting date are shown in Table 1.
FBG on frost prevention. The details of each
study are included in the "Results" section.
Table 1. Frosting studies on bentgrass turf.
Date of frosting
and damage
Objective
Methods
Results
4 September 1996
Test FBG with gel for
Four rates (0, 10, 15, 20%)
Good frost control on all FBG-treated plots
(1) frost prevention and
of FBG with gel with two
and no initial signs of damage from the
(2) turf damage.
replications of each.
FBG treatments.
6 September 1996
Test reapplication of
Repeat of 4 September
Good frost control on all FBG-treated plots.
FBG with gel.
1996 on same sod pieces.
After 48 hours, leaf damage (browning out)
appeared on sod receiving 20% treatment.
22 October 1996
Test FBG (no gel) for
Five rates (0, 5, 10, 15, 20%)
Good frost control on all treated plots except
(1) frost prevention and
of FBG (no gel) with two
the 5% treatment. No signs of damage after
(2) turf damage.
replications of each.
48 hours.
25 October 1996
Test reapplication
Repeat of 22 October on
Same as 22 October.
without gel.
same sod pieces.
25 August 1997
Test FBG (no gel) for
Four rates (0, 10, 15, 20%)
Good frost control on all FBG-treated plots.
(1) frost prevention and
of FBG (no gel) with three
No damage after 48 hours.
(2) turf damage.
replications of each.
7 September 1997
Test FBG (no gel) for
Four rates (0, 10, 15, 20%)
Good frost control on all FBG-treated plots.
(1) frost prevention and
of FBG (no gel) with three
Some tip burn on 20% (see Summary).
(2) turf damage.
replications of each.
No burn after 48 hours of watering.
16 September 1997
Test FBG (no gel) over
Four rates (0, 10, 15, 20%)
Good frost control on FBG-treated plots.
two days with no
of FBG (no gel) with three
reapplication.
replications of each.
17 September 1997
Same sod irrigated with
10% FBG treatment showed patchy frosting,
1 cm (0.8 in.) of water but
but no damage was observed.
not re-treated.
3
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