2008 Peanut Production Update Agronomics University of Georgia – College of Agricultural and...

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


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


New Cultivar Releases

The following cultivars were released for 2008 and will be in seed increase stage

Georgia-07W

Tifguard

AP-4

AT 215


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


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


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


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


Root gall ratings based on % of root system with galls1 = 1-10%, 9 = 81-90%

Tifguard


Acreage Planted in 2007 for 2008 Seed Supplysource: Georgia Crop Improvement Association


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


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


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


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


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



Inci

den

ce o

f w

hite

mol

d (%

)

Planting Date


Effect of Planting Date and Cultivar on Yield in Peanut, Rigdon Farm, 2006

0

500

1000

1500

2000

2500

3000

3500

4000

4500



Yie

ld (

lb/A

)

Planting Date


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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