Ebelhar et al., 2005 Effects of Nutrient Management and Fungicides on Soybeans in Southern Illinois S. A. Ebelhar, and C. D. Hart
Effects of Nutrient Management and Fungicides on Soybeans in Southern Illinois
Jan 19, 2016
Effects of Nutrient Management and Fungicides on Soybeans in Southern Illinois. S. A. Ebelhar, and C. D. Hart. OBJECTIVES. Determine the effects of potassium, chloride, boron and manganese nutrition on the response of soybeans to diseases (possibly including Asian soybean rust) - PowerPoint PPT Presentation
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Ebelhar et al., 2005
Effects of Nutrient Management and Fungicides on Soybeans in Southern Illinois
S. A. Ebelhar, and C. D. Hart
Ebelhar et al., 2005
OBJECTIVESDetermine the effects of potassium, chloride, boron and manganese nutrition on the response of soybeans to diseases (possibly including Asian soybean rust)
Evaluate the nutrient interaction effects with and without the application of fungicides
Compare these effects across Roundup Ready and conventional herbicide programs.
Ebelhar et al., 2005
Soil Tests (ppm), 2005DSAC pH P K Ca Mg
0-6” 6.8 64 184 2105 90
6-12” 7.0 8 66 1964 81
12-18” 7.0 26 60 1960 81
18-24” 7.0 13 61 1858 88
BARC
0-6” 6.3 82 154 1436 94
6-12” 6.1 20 48 1305 80
12-18” 5.9 23 75 1246 171
18-24” 6.3 12 70 1426 374
Ebelhar et al., 2005
Soil Tests (ppm), 2005DSAC % OM S Mn Cl B CEC
0-6” 2.7 9.8 38 86 1.3 12.4
6-12” 2.5 6.5 26 92 1.4 10.9
12-18” 2.5 3.8 25 96 1.3 10.7
18-24” 2.5 8.3 24 92 1.1 10.4
BARC
0-6” 2.9 9.8 41 30 0.8 9.8
6-12” 2.4 9.3 22 33 0.5 9.1
12-18” 1.5 18.3 10 41 0.4 10.3
18-24” 1.2 39.3 5 60 0.4 12.1
Ebelhar et al., 2005
Treatment Effects on Yield, 2005
0
10
20
30
40
50
60
BARC DSAC
Yie
ld (b
u/ac
re)
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
NS NS
Ebelhar et al., 2005
Variety and Fungicide Effects on Yield, 2005
0
10
20
30
40
50
60
BARC DSAC
Yie
ld (b
u/ac
re)
94B54 4502 94B53 - Fung. + Fung.
a ** NS NS
b b
Ebelhar et al., 2005
02468
101214161820
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Week after planting
Pre
cipit
ati
on (
inch
es)
Precipitation 30-yr Avg.
Rainfall after Planting and Foliar Applications, Dixon Springs, 2005
Planted 5/25
Mn & B (7/1)
Fung. & Mn & B (7/19)
5/4
Ebelhar et al., 2005
02468
101214161820
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Week after planting
Pre
cipit
ati
on (
inch
es)
Precipitation 30-yr Avg.
Rainfall after Planting and Foliar Applications, Brownstown, 2005
Planted 5/4
Mn & B (7/5)
Fung. & Mn & B (7/15)
5/4
Ebelhar et al., 2005
Treatment Effects on Soybean Injury, 2005
0
1
2
3
4
5
BARC DSAC
Inju
ry (0
-5 S
cale
)
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
*** ***
Ebelhar et al., 2005
Variety and Fungicide Effects on Soybean Injury, 2005
0
1
2
3
4
5
BARC DSAC
Inju
ry (0
-5 S
cale
)
94B54 4502 94B53 - Fung. + Fung.
a b b *** NS NS
Ebelhar et al., 2005
Variety x Fungicide Effects on Frogeye Leaf Spot, DSAC, 2005
0
1
2
3
4
5
6
DSAC
Eye
s per
trifo
liate
94B54 -F 94B54 +F 4502 -F 4502 +F 94B53 -F 94B53 +F
Var: a b b
Fung ***
Ebelhar et al., 2005
Treatment Effects on Soybean Trifoliate Leaf N Conc., 2005
0
1
2
3
4
5
BARC DSAC
% L
eaf N
utri
ent
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
* NS
Ebelhar et al., 2005
Variety and Fungicide Effects on Soybean Leaf N Conc., 2005
0
1
2
3
4
5
BARC DSAC
% L
eaf N
utri
ent
94B54 4502 94B53 - Fung. + Fung.
b a a NS b a a NS
Ebelhar et al., 2005
Treatment Effects on Soybean Trifoliate Leaf K Conc., 2005
0
1
2
3
4
5
BARC DSAC
% L
eaf N
utri
ent
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
NS *
Ebelhar et al., 2005
Variety and Fungicide Effects on Soybean Leaf K Conc., 2005
0
1
2
3
4
5
BARC DSAC
% L
eaf N
utri
ent
94B54 4502 94B53 - Fung. + Fung.
b a b * b a b NS
Ebelhar et al., 2005
Treatment Effects on Soybean Trifoliate Leaf Ca Conc., 2005
0
1
2
3
4
5
BARC DSAC
% L
eaf N
utri
ent
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
NS NS
Ebelhar et al., 2005
Variety and Fungicide Effects on Soybean Leaf Ca Conc., 2005
0
1
2
3
4
5
BARC DSAC
% L
eaf N
utri
ent
94B54 4502 94B53 - Fung. + Fung.
c b a *** b b a NS
Ebelhar et al., 2005
Treatment Effects on Soybean Trifoliate Leaf S Conc., 2005
0
0.1
0.2
0.3
0.4
0.5
BARC DSAC
% L
eaf N
utri
ent
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
NS NS
Ebelhar et al., 2005
Variety and Fungicide Effects on Soybean Leaf S Conc., 2005
0
0.1
0.2
0.3
0.4
0.5
BARC DSAC
% L
eaf N
utri
ent
94B54 4502 94B53 - Fung. + Fung.
c a b NS b a a NS
Ebelhar et al., 2005
Treatment Effects on Soybean Trifoliate Leaf B Conc., 2005
0
10
20
30
40
50
60
70
BARC DSAC
ppm
Lea
f Nut
rien
t
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
*** ***
Ebelhar et al., 2005
Variety and Fungicide Effects on Soybean Leaf B Conc., 2005
0
10
20
30
40
50
60
70
BARC DSAC
ppm
Lea
f Nut
rien
t
94B54 4502 94B53 - Fung. + Fung.
NS *** b b a NS
Ebelhar et al., 2005
Treatment Effects on Soybean Trifoliate Leaf Mn Conc., 2005
0
30
60
90
120
150
180
BARC DSAC
ppm
Lea
f Nut
rien
t
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
*** ***
Ebelhar et al., 2005
Variety X Treatment Effects on Soybean Trifoliate Leaf Mn Conc., DSAC, 2005
0
60
120
180
240
300
360
94B54 4502 94B53
ppm
Lea
f Nut
rien
t
Check + K2SO4 + KCl
+ KCl + B + KCL + Mn + KCl + B + Mn
Ebelhar et al., 2005
Variety and Fungicide Effects on Soybean Leaf Mn Conc., 2005
0
30
60
90
120
150
180
BARC DSAC
ppm
Lea
f Nut
rien
t
94B54 4502 94B53 - Fung. + Fung.
NS *** b b a NS
Ebelhar et al., 2005
SUMMARYFoliar application of B and Mn increased the leaf composition of B and Mn, respectively, and caused some injury to the soybean plants but had no effect on yield.Disease pressure was low, but was affected by variety choice and by fungicide treatment, but not fertilizer treatment at Dixon Springs.Fungicide application at Brownstown caused some leaf injury and slightly reduced yields.
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