Transcript Research and Development trial Feedback

Research and
Development
trial Feedback
UAP – Western Cape
Johan Janse van Rensburg
Jan Stuurman
Johan Kotze
Alexin
 Liquid organic nutrient complex containing salicylate
derivatives to boost immune response of the plant
 Sprayed on

Apples, Apricots, Citrus, Pears, Plums, Peaches, Table
grapes, Wine grapes, Wheat
 To determine efficacy of control of
 Taphrina, Brown Rust, Downy Mildew, Phomopsis, Leaf
roll virus, Xanthomonas and Pseudomonas infection as
well as Phytotoxicity
Alexin
Control of Xanthomonas infection on Apricots
 Protocol
 Treatment
 Bebeco
11/09/2008
 Soldene
22/09/2008
 Rating
 Percentage fruit with
visual Xanthomonas
infection
Treatment
Dosage
Timing
Alexin
125mL/100L
28 Day
Alexin
250mL/100L
28 Day
Alexin
250mL/100L
14 Day
Alexin
250mL/100L
Infection
Xanbac
200mL/100L
14 Day
Xanbac +
Alexin
200mL/100L +
250mL/100L
14 Day
Cungfu +
Alexin
300mL/100L +
250mL/100L
14 Day
Cungfu
300mL/100L
14 Day
Untreated
Control
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
% Infected fruit
Alexin
Control of Xanthomonas on Apricot trees
C
u
gF
u
gF
c
c
ba
ba
n
n
u
u
C
n
n
(3
0
10
4
D
n
xi
(2
5
.
.
..
..
0
0
1
1
L/
m
)
ds
L/
m
0
0
io
er
P
5
(2
s)
ay
le
n
xi
n
)
ys
io
a
D
le
A
A
4
+
(1
L)
L)
+
(1
s)
ay
D
s)
ay
D
s)
ay
D
ct
fe
8
8
4
n
(I
L)
L)
0
0
10
0
0
)
0L
(1
(2
(2
)
0L
)
0L
)
0L
0
10
10
L/
L/
0m
0m
0
L/
L/
1
0
0
l
0
o
tr
1
1
1
L/
m
0m
0m
0
0
(3
(2
(2
0
L/
m
L/
m
on
L/
m
C
5
0
0
5
2
5
5
(2
(2
(2
(1
ed
at
Treatments
a
X
a
X
n
xi
e
tr
n
xi
n
xi
n
xi
le
n
le
le
le
A
A
A
A
U
SD
Bebeco = 14.9%
Soldene = 11.2%
Soldene
Bebeco
Alexin
Control of Xanthomonas infection on Peaches
 Protocol
Treatment
 Treatment

Zandvliet
22/09/2008
 Rating




Percentage fruit with
visual Xanthomonas
infection
Overall tree health
Average fruit size
Fruit Quality
Dosage
Timing
Alexin
125mL/100L
28 Day
Alexin
250mL/100L
28 Day
Alexin
250mL/100L
14 Day
Alexin
250mL/100L
Infection
Xanbac
200mL/100L
14 Day
Xanbac +
Alexin
200mL/100L +
250mL/100L
14 Day
Cungfu +
Alexin
300mL/100L +
250mL/100L
14 Day
Cungfu
300mL/100L
14 Day
Untreated
Control
100.00%
90.00%
80.00%
70.00%
60.00%
50.00%
40.00%
30.00%
20.00%
10.00%
0.00%
% Infected fruit
Alexin
Control of Xanthomonas on Peach trees
C
u
gF
u
gF
c
c
ba
ba
n
n
u
u
C
n
n
(3
0
10
4
D
n
xi
(2
5
.
.
..
..
0
0
1
1
L/
m
)
ds
L/
m
0
0
io
er
P
5
(2
s)
ay
le
n
xi
n
)
ys
io
a
D
le
A
A
4
+
(1
L)
L)
+
(1
s)
ay
D
s)
ay
D
s)
ay
D
ct
fe
8
8
4
n
(I
L)
L)
0
0
10
0
0
)
0L
(1
(2
(2
)
0L
)
0L
)
0L
0
10
10
L/
L/
0m
0m
0
L/
L/
1
0
0
l
0
o
tr
1
1
1
L/
m
0m
0m
0
0
(3
(2
(2
0
L/
m
L/
m
on
L/
m
C
5
0
0
5
2
5
5
(2
(2
(2
(1
ed
at
Treatments
a
X
a
X
n
xi
e
tr
n
xi
n
xi
n
xi
le
n
le
le
le
A
A
A
A
U
SD
Fruit = 7.7%
Canopy = 8.1%
Tree Health
Percentage fruit with visual symptoms
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
Fruit weight (g)
Alexin
Control of Xanthomonas on Peach trees
Average Fruit Size
C
u
gF
u
gF
c
c
ba
ba
n
n
u
u
C
n
n
(3
0
10
4
D
n
xi
(2
5
.
.
..
..
0
0
1
1
L/
m
)
ds
L/
m
0
0
io
er
P
5
(2
s)
ay
le
n
xi
n
)
ys
io
a
D
le
A
A
4
+
(1
L)
L)
+
(1
s)
ay
D
s)
ay
D
s)
ay
D
ct
fe
8
8
4
n
(I
L)
L)
0
0
10
0
0
)
0L
(1
(2
(2
)
0L
)
0L
)
0L
0
10
10
L/
L/
0m
0m
0
L/
L/
1
0
0
l
0
o
tr
1
1
1
L/
m
0m
0m
0
0
(3
(2
(2
0
L/
m
L/
m
on
L/
m
C
5
0
0
5
2
5
5
(2
(2
(2
(1
ed
at
Treatments
a
X
a
X
n
xi
e
tr
n
xi
n
xi
n
xi
le
n
le
le
le
A
A
A
A
U
SD
Fruit size = 23g
Alexin
Control of Xanthomonas on Peach trees
Control
Alexin (250mL/100L)(14 Days)
Alexin
Control of Xanthomonas infection on Plums
 Protocol
Treatment
Dosage
Timing
Alexin
125mL/100L
28 Day
Alexin
250mL/100L
28 Day
Alexin
250mL/100L
14 Day
Alexin
250mL/100L
Infection
Xanbac
200mL/100L
14 Day
Xanbac +
Alexin
200mL/100L +
250mL/100L
14 Day
Cungfu +
Alexin
300mL/100L +
250mL/100L
14 Day
Cungfu
300mL/100L
14 Day
Untreated
Control
 Treatment
 Sunkiss
11/09/2008
 Fortune
11/09/2008
 Rating
 Percentage fruit with
visual Xanthomonas
infection
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
% Infected fruit
Alexin
Control of Xanthomonas on Plum trees
C
u
gF
u
gF
c
c
ba
ba
n
n
u
u
C
n
n
(3
0
10
4
D
n
xi
(2
5
.
.
..
..
0
0
1
1
L/
m
)
ds
L/
m
0
0
io
er
P
5
(2
s)
ay
le
n
xi
n
)
ys
io
a
D
le
A
A
4
+
(1
L)
L)
+
(1
s)
ay
D
s)
ay
D
s)
ay
D
ct
fe
8
8
4
n
(I
L)
L)
0
0
10
0
0
)
0L
(1
(2
(2
)
0L
)
0L
)
0L
0
10
10
L/
L/
0m
0m
0
L/
L/
1
0
0
l
0
o
tr
1
1
1
L/
m
0m
0m
0
0
(3
(2
(2
0
L/
m
L/
m
on
L/
m
C
5
0
0
5
2
5
5
(2
(2
(2
(1
ed
at
Treatments
a
X
a
X
n
xi
e
tr
n
xi
n
xi
n
xi
le
n
le
le
le
A
A
A
A
U
SD
Sunkiss = 8%
Fortune = 9%
Fortune
Sunkiss
Alexin
Control of Powdery Mildew infection on Grapevine
 Protocol
 Treatment


Chenin Blanc (Franschoek)
1/10/2008
Chenin Blanc (Slanghoek)
2/10/2008
 Rating
 Percentage bunches with
visible powdery mildew
infection
Treatment
Dosage
Timing
Alexin
250mL/100L
14 Day
Alexin
500mL/100L
14 Day
Stefenia
1.5Kg/Ha
14 Day
Stefenia
3Kg/Ha
14 Day
Croplife
100mL/100L
14 Day
Legend
25mL/100L
14 Day
Untreated
Control
Alexin
Control of Powdery mildew infection on grapevine
Chenin Blanc (Franschoek)
Chenin Blanc (Slanghoek)
100.00%
90.00%
% Infected bunches
80.00%
70.00%
60.00%
50.00%
40.00%
30.00%
20.00%
10.00%
0.00%
g
Le
m
0
g
K
(2
(3
0
L/
m
0
00
)
L)
1
a)
a
/H
1
L/
0
g
0
L)
L)
0
)
0L
)
0L
1
L/
0
0
l
m
1
/H
K
.5
50
L/
m
1
o
tr
L/
m
(2
0
0
(1
st
0
5
on
C
5
(2
er
d
ag
en
n
ia
ia
o
(5
bo
xi
n
xi
n
fe
te
n
fe
te
le
le
(2
ed
at
n
xi
e
tr
le
n
Treatments
a
M
S
S
A
A
A
U
SD
Chenin Blanc (Fr) = 30%
Chenin Blan (Sl) = 23%
Alexin
Control of Leaf Roll virus on Grapevine
 Protocol
 Treatment

Chenin Blanc
1/10/2008
 Rating



Percentage bunches with
visible powdery mildew
infection
Chardonnay
25/02/2009
Cabernet Sauvignon
02/04/2009
Treatment
Dosage
Timing
Alexin
250mL/100L
28 Day
Alexin
500mL/100L
28 Day
Alexin
250mL/100L
14 Day
Alexin
500mL/100L
14 Day
Bion
7.5g/100L
14 Day
Messenger
15g/100L
14 Day
Untreated
Control
Alexin
Control of Leaf Roll virus on grapevine
Chardonnay (2007/2008)
Cabernet Sauvignon (2007/2008)
Chardonnay (2008/2009)
Cabernet Sauvignon (2008/2009)
% Leaves with Visual
Symptoms
100.00%
90.00%
80.00%
70.00%
60.00%
SD (2007/2008)
Chardonnay = 13.5
Cabernet = 10.8
50.00%
40.00%
30.00%
SD (2008/2009)
Chardonnay = 14.5%
Cabernet = 10.5%
20.00%
10.00%
0.00%
e
M
n
n
xi
g
er
(1
0
)
0L
)
0L
(1
(1
)
0L
(2
)
0L
(2
)
0L
1
0
0
0
L)
1
1
1
l
0
g/
0
5
0
L/
m
L/
m
L/
m
/1
0
0
0
1
o
tr
L/
m
on
C
0
g
0
5
0
5
.5
(5
(2
(7
n
xi
(5
en
ss
le
le
n
xi
(2
ed
at
n
xi
e
tr
le
le
n
io
B
A
A
A
A
U
4
4
8
8
)
ay
D
)
ay
D
)
ay
D
)
ay
D
Treatments
Alexin
Control of Leaf Roll virus on grapevine
Cabernet Sauvignon
25.00
20.00
Brix %
15.00
10.00
5.00
0.00
e
M
en
ss
n
n
xi
(7
g
er
(1
0
0
)
0L
)
0L
(1
(1
)
0L
1
L)
1
l
0
g/
0
5
0
L/
m
/1
0
1
o
tr
L/
m
on
C
0
g
0
5
.5
(5
(2
ed
at
n
xi
e
tr
le
le
n
io
B
A
A
U
4
4
)
ay
D
)
ay
D
Treatments
Western Cape R&D Team
Johan Janse van Rensburg
Jan Stuurman
Johan Kotze