2008 peanut production update agronomics university of georgia – college of agricultural and...
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2008 Peanut Production Update
Agronomics
2008 Peanut Production Update
Agronomics
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
CCA Training18 January 2008
Perry, GA
Cultivars in 2008
The following cultivars will account for 90% + of the acreage
Georgia GreenAP-3Georgia-03LGeorgia-02CAT 3085ROC-99R
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
Cultivars in 2008
The following cultivars will have a LIMITED seed supply, mostly in seed increase acreage. DO NOT expect seed available for commercial production
Georgia-06GGeorgia GreenerFlorida-07McCloudYork
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
New Cultivar Releases
The following cultivars were released for 2008 and will be in seed increase stage
Georgia-07W
Tifguard
AP-4
AT 215
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
Georgia-07W
Advanced breeding line GA 011514
Progeny of a cross between C-99R and Georgia Green
Medium to medium + maturity
“W” stands for white mold resistance
Not high oleic
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
Tifguard
Advanced breeding line C724-19-15
Progeny of a cross between C-99R and Coan
Medium maturity
Very good resistance to root-knot nematode and TSWV
Shell out similar to C-99R, not high oleic
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
Root Knot Nematode TrialDecatur Co. (irrigated)
1.9
0.02
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Georgia Green Tifguard
Root gall ratings based on % of root system with galls1 = 1-10%, 9 = 81-90%
Root Knot Nematode TrialDecatur Co. (irrigated)
3370
3510
3000
3200
3400
3600
3800
4000
Georgia Green Tifguard
Root Knot Nematode TrialWebster Co. (non-irrigated)
5.32
0.19
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
Georgia Green Tifguard
Root gall ratings based on % of root system with galls1 = 1-10%, 9 = 81-90%
Tifguard
Georgia Green Tifguard
Acreage Planted in 2007 for 2008 Seed Supplysource: Georgia Crop Improvement Association
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
CULTIVAR SOURCE ACREAGE %
Georgia Green UGA 50,156 59.2
Georgia-03L UGA 9,272 10.9
Georgia-02C UGA 8,502 10.0
AT 3085RO Golden 6,150 7.3
C-99R UF 3,428 4.0
AP-3 UF - Anderson 2,834 3.3
AT 3081R Golden 973
AT 215 Golden 672
Florida-07 UF 642
York UF 515
Georgia-06G UGA 491
Carver UF 312
Georgia-01R UGA 247
McCloud UF 192
ViruGard Golden 140
Tifguard USDA 115
Georgia Greener UGA 38
Georgia-07W UGA 17
TOTAL 84,717
Cultivars and Maturity Range
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
Cultivar Days to Maturity Relative to Georgia Green
ViruGard 21 days earlier
Andru II 10-14 days earlier
AT 215 10-14 earlier ??
Carver 0-7 days earlier
Georgia Green 135-140 days after planting
AT 3085RO Same
Georgia-03L Same
Georgia-06G Same
McCloud Same ??
AP-3 0-7 days later
Florida-07 7 days later ??
York 14-21 days later
C-99R 14-21 days later
Georgia-02C 21 days later
Cultivar Seed SizesMedium-Large
AP-3
Georgia-03L
McCloud
Large Seeded Runners
AT 215
C-99R
Florida-07
Georgia-01R
ViruGard
SmallGeorgia GreenYork
MediumAT 3081RAT 3085ROCarverGeorgia-02CGeorgia-06GGeorgia Greener
Attapulgus – 8/21/07 – planted June 11 (71 DAP)
AP-3AP-4 AT 3081R AT 3085RO
GA-03L
GA-06GGG
GA-06G AP-3
GA-06G GA Green GA-03LAP-4
AP-3
AP-33085
High Oleic Cultivars
Andru II
AT 215
AT 3085RO
Georgia-02C
Florida-07
McCloud
York
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
Georgia-06G Trials
3000
3500
4000
4500
5000
5500
6000
Seminole Early Tift Jefferson
GA Green GA-06G GA-03L AT 3085RO FL-07
Cultivar X Row Pattern X Tillage Trial
5036 5096 5080
55375680
6512
5204
4684
4000
4500
5000
5500
6000
6500
7000
GeorgiaGreen
AP-3 Georgia-03L
AT 3081R AT3085RO
Georgia-06G
AP-4 Georgia-02C
averaged over tillage and row pattern
Tifton - 2007
Yield Data
Yield comparisons available from the University of Georgia Statewide Variety Test program
www.swvt.uga.edu
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
Georgia-03L Seeding Rate Trial
40464113
45904513
4193
37003800390040004100
420043004400450046004700
2 2.5 3 3.5 4
Seed per Foot of Each Twin Row
2008 Index Plant Population
Planting Population
Spotted Wilt
Leaf SpotWhite Mold
Limb Rot
Less than 3 plants/foot 25 NA 0 NA
3 to 4 plants/ft 15 NA 0 NAMore than 4
plant/ft 5 NA 5 NA
Georgia Peanut Acreage1950 - 2007
400
450
500
550
600
650
700
750
800
850
900
950
1000
1950
1960
1970
1980
1990
2000
(1,000 acres)
Georgia Peanut Acreage2002 - 2007
510545
620
755
580
530
400
450
500
550
600
650
700
750
800
2002 2003 2004 2005 2006 2007
(1,000 acres)
Planting Date Reminders
TSWV still dictates planting date►April planting is at greater risk
Monitor soil temperature closely if planting in AprilIf planting in April, plant the following cultivars with
increased resistance to TSWV►AP-3, Georgia-02C, Georgia-03L, AT 3085RO,
DO NOT plant late maturing cultivars after May 25th – Georgia-02C, C-99R, York, Georgia-01RDO NOT plant late maturing cultivars in fields with
significant levels of peanut root-knot nematode
University of Georgia – College of Agricultural and Environmental SciencesDepartment of Crop and Soil Sciences
Planting Date Trials
2000
2500
3000
3500
4000
4500
5000
5500
6000
Attapulgus Sunbelt Tifton Midville
April May June
10 9 11 18 16 19 11 30 17 17
Planting Date TrialsTifton
3000
3500
4000
4500
5000
5500
6000
6500
7000
GA G
reen
AP-3AP-4
GA-0
3L
3081
R
3085
RO
GA-0
6GFL-0
7
April May
Lb
s/A
Planting Date TrialsTifton
0
5
10
15
20
25
30
GA G
reen
AP-3AP-4
GA-0
3L
3081
R
3085
RO
GA-0
6GFL-0
7
April May
% T
SW
V
Planting Date X Mid-Maturing CultivarsPonder Farm - 2006
0
2
4
6
8
10
12
14
16
GAGreen
AP-3 GA-03L Carver 3081R 3085A Attaboy
21-Apr 12-May 26-May
a
bb
aa
b
a
ab
c c
abbc
c
a
LSD = 5.6 3.4 2.3
%T
SW
V S
ever
ity
Planting Date X Mid-Maturing CultivarsPonder Farm - 2006
3000
3500
4000
4500
5000
5500
GAGreen
AP-3 GA-03L Carver 3081R 3085A Attaboy
21-Apr 12-May 26-MayLSD = 5.6 3.4 2.3
Lb
s/A
Effect of Planting Date and Cultivar on Incidence of Spotted Wilt in Peanut, Rigdon Farm, 2006
0
5
10
15
20
25
30
35
40
45 Georgia Green AP-3
April 24 May 2 May 8 May 16 May 23
Inci
den
ce o
f T
SW
(%
)
Planting Date
Source: Dr. Albert Culbreath, UGA
Effect of Planting Date and Cultivar on Incidence of White Mold in Peanut, Rigdon Farm, 2006
0
2
4
6
8
10
12
14
16 Georgia Green AP-3
April 24 May 2 May 8 May 16 May 23
Inci
den
ce o
f w
hite
mol
d (%
)
Planting Date
Source: Dr. Albert Culbreath, UGA
Effect of Planting Date and Cultivar on Yield in Peanut, Rigdon Farm, 2006
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000 Georgia Green AP-3
April 24 May 2 May 8 May 16 May 23
Yie
ld (
lb/A
)
Planting Date
Source: Dr. Albert Culbreath, UGA
2008 Index Planting Date Points
Planting Date
Spotted Wilt
Leaf Spot
White Mold
Limb Rot
Prior to May 1 30 0 10 0May 1 - May 10 15 0 5 0May 11-May 31 5 5 0 0June 1-June 10 10 10 0 5After June 10 15 10 0 5
Peanut Rx
Variety ComparisonVariety Comparison
VarietyVariety Maturity(135-140 DAP)
Peanut Rx Risk IndexHigh Oleic
(Yes or No)TSWV Leaf Spot White Mold Limb Rot
ViruGardViruGard 21 (-) 30 20 25 NA No
Andru IIAndru II 10-14 (-) 25 30 25 25 Yes
AT 215AT 215 10-14 (-) NA NA NA NA Yes
Georgia GreenGeorgia Green 0 30 20 25 15 No
Georgia-03LGeorgia-03L 0 15 15 10 20 No
AP-3AP-3 0 10 25 10 25 No
AT 3085ROAT 3085RO 0 20 30 25 NA No
Georgia-06GGeorgia-06G 0 20 NA NA NA No
TifguardTifguard 0 10 15 25 NA No
AP-3AP-3 0-7 (+) 10 25 10 25 No
McCloudMcCloud 0-7 (+) 20 25 20 NA Yes
Florida-07Florida-07 7 (+) 10 20 15 NA Yes
C-99RC-99R 14-21 (+) 20 15 15 25 No
YorkYork 14-21 (+) 10 10 10 NA Yes
Georgia-02CGeorgia-02C 21 (+) 15 20 10 20 Yes
2008 Index Plant Population
Planting Population
Spotted Wilt
Leaf SpotWhite Mold
Limb Rot
Less than 3 plants/foot 25 NA 0 NA
3 to 4 plants/ft 15 NA 0 NAMore than 4
plant/ft 5 NA 5 NA
Prescription Programs- Long Season Cultivars
Be aware of tropical storms later in the season that may delay harvest.
Delay start of fungicide programs and stretch interval between fungicide applications, especially in drier weather.
Prescription Programs in General
USE REDUCED FUNGICIDE INPUTS ONLY IN LOW RISK FIELDS!
Prescription programs are now endorsed by Syngenta
MOST fungicide programs can be modified to low, medium, and high risk fields
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