CBR fungicide trial
Cylindrocladium black rot (CBR) can cause serious losses of peanuts when severe. This disease is caused by a
soil fungus (Cylindrocladium parasiticum) and typically occurs in the same field areas year after year. Crop
rotation and variety resistance are two of the best ways to manage this disease (see the Peanut Production Guide
for additional details). In greater disease pressure situations, particularly with susceptible varieties, fungicide
applications can be very helpful. The below data comparing the effectiveness and cost-returns of different
treatments for CBR were shared from work conducted by Mark Crosby, Wade Parker, Bob Kemerait, and
Amanda Smith in a nearby site in Midville, Georgia in 2014. While disease pressure was overall relatively light,
the choice of which product to use still became important. In this trial, the Priaxor-Bravo-Muscle-Priaxor
treatment came out on top providing the most overall benefit. It will be good to compare these results to future
trials that have greater amounts of disease pressure.
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30 Dap
(days after
Planting)
45 Dap
60 Dap
75 Dap
90 Dap
105 Dap
120 Dap
Treatment 1 –
Bravo + Muscle;
Provost
Bravo 1.5
pints
Bravo 1 pint +
Muscle 7.2 oz
Provost 10.7 oz
Provost
10.7 oz
Provost 10.7 oz
Provost 10.7
oz
Bravo 1.5
pints
Treatment 2 –
Bravo Only
Bravo 1.5
pints
Bravo 1.5 pints
Bravo 1.5 pints
Bravo 1.5 Bravo 1.5 pints
pints
Bravo 1.5
pints
Bravo 1.5
pints
Treatment 3 –
Proline 5.7oz
In-furrow +
Provost
Bravo 1.5
pints
Provost 10.7 oz
Provost
10.7 oz
Provost 10.7 oz
Provost 10.7
oz
Bravo 1.5
pints
Treatment 4 –
Proline EE –
Provost 10.7 oz
Proline 5.7
oz
Provost 10.7 oz
Provost
10.7 oz
Provost 10.7 oz
Provost 10.7
oz
Bravo 1.5
pints
Treatment 5 –
Bravo + Muscle
(tebuconazole)
Bravo 1.5
pints
Bravo 1.5 pints
Bravo 1 pint +
Muscle 7.2 oz
Bravo 1
pint +
Muscle
7.2 oz
Bravo 1 pint +
Muscle 7.2 oz
Bravo 1 pint +
Muscle 7.2 oz
Bravo 1.5
pints
Priaxor 6 oz
Bravo 1 pint +
Muscle 7.2 oz
Priaxor 8 Bravo 1 pint +
oz
Muscle 7.2 oz
Bravo 1 pint +
Muscle 7.2 oz
Bravo 1.5
pints
Treatment 6Priaxor
Treatment 7 –
Abound + Alto
Bravo 1.5
pints
Bravo 1.5 pints
Abound 18.5
oz + Alto 5.5 oz
Bravo 1.5 Abound 18.5
pints
oz + Alto 5.5 oz
Bravo 1.5
pints
Bravo 1.5
pints
Treatment 8 –
Solatenol
(Elatus)
Bravo 1.5
pints
Bravo 1.5 pints
Solatenol 9 oz
Bravo 1.5 Solatenol 9 oz
pints
Bravo 1.5
pints
Bravo 1.5
pints
Treatment 9 –
Fontellis
Bravo 1.5
pints
Bravo 1.5 pints
Fontelis 16 oz
Fontelis
16 oz
Bravo 1 pint +
Muscle 7.2 oz
Bravo 1.5
pints
Treatment 10 –
Convoy + Bravo
Bravo 1.5
pints
Bravo 1.5 pints
Bravo 1.5 pints
+ Convoy 13 oz
Bravo 1.5 Bravo 1.5 pints
pints +
+ Convoy 13 oz
Convoy
13 oz
Bravo 1.5
pints +
Convoy 13 oz
Bravo 1.5
pints
Headline 9oz
Bravo 1 pint +
Muscle 7.2 oz
Headline
12 oz
Bravo 1 pint +
Muscle 7.2 oz
Bravo 1.5
pints
Treatment 11 –
Headline –
Bravo + Muscle
Fontelis 16 oz
Bravo 1 pint +
Muscle 7.2 oz
Figure 1. 2014 Peanut Fungicide Trial (Midville)
CBR (hits/90ft) 09 October 2014
10
8
6
4
2
0
Figure 2. 2014 Peanut Fungicide Trial (Midville)
Yield (lb/ac) 16 October 2014
7500
a
7000
c
6500
6000
cd
bcd
cd
cd
ab
c
d
bcd
d
Figure 3. Adjusted Revenue by Fungicide Treatment Program as
Compared to Bravo Only
100 $89
75
$56
50
0
-25
-50
-75
-100
$28
(Dollars Per Acre)
25
0
-$10
-$20
-$21
-$63
-$51
-$90