Variety Performance in Fields Variety Performance in Fields Infested with Verticillium dahliae in Infested with Verticillium dahliae in

the High Plains of Texasthe High Plains of Texas

Terry WheelerTerry Wheeler

Texas Agricultural Experiment StationTexas Agricultural Experiment Station

Lubbock, TXLubbock, TX

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6(R

elat

ive

yiel

d +

(1-

Rel

ativ

e %

Wil

t)

FM 960BR FM 989B2R FM 989BR DP 455BR FM 960RR PM 2379RR DP 5690RR

FM 960B2R PM 2167RR AT AtlasRR Phy 470WR NG 2448R PM 2280BR FM 989RR

AFD 3602R DP 444BR ST 5242BR PM 2266RR NG 1553R ST 5303R AT PatriotRR

DP 424B2R FM 5045BR AFD 3511R ST 6636BR DP 449BR Phy 410R ST 4696R

PM 2145RR DP 434RR DP 555BR NG 3969R ST 4575BR AM 262R Phy 310R

DP 445BR DP 494RR ST 5599BR AT WarriorRR DP 432RR BCG 28R DP 5415RR

AM 821R BCG 50R BCG 30R AT MagnumRR

Overall Best Recommendation in 2005

68

70

72

74

76

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82

84

Ave

rage

Tem

pera

ture

(F

)

July15-31 Aug1-15 Aug15-31

200420052006

0

0.5

1

1.5

2

2.5

Cum

ulat

ive

Rai

nfal

l (")

July15-31 Aug1-15 Aug16-31

200420052006

Materials and Methods

32 – 36 varieties at a site

4 replications, randomized complete block design

Plots were 35.5 ft. long and 2 rows wide

Soil at each test site was sampled for V. dahliae at planting.

Plots were rated for incidence of wilt in August

Plots were harvested with a 2-row plot stripper

Site Microsclerotia/cc soil

Average

% Wilt

Earth 0 0 (Sept. 8)

Brownfield 5.5 2 (Aug. 28)

Petersburg 31 20 (Aug. 18)

Slaton 32 24 (Aug. 24)

Levelland 80 16 (Aug. 8)

500

700

900

1100

1300

1500

0 2 4 6 8 10 12 14

% Wilt

Yie

ld

Brownfield August 28

y = -21.629x + 1385.3

R2 = 0.4293

700

800

900

1,000

1,100

1,200

1,300

1,400

1,500

0 5 10 15 20 25 30 35

% Wilt

Lbs

of

lint

/acr

e

Petersburg August 18

-5

5

15

25

35%

Wilt

AFD 5065B2F PM 2326RR BCG 520R DG 2100B2F FM 989RR ST 5242BR

FM 989B2R PM 2167R ST 4664F NG 2448R CG 3020B2F BW 3255B2F

FM 9063B2F DP 424B2R PM 2266RR NG 1553R ST 4700B2F FM 960RR

BW 4021B2F FM 9060F PM 2280BR AT Atlas RR CG 3520B2F FM 960BR

FM 960B2R BCG 50R AT Summitt ST 4357B2F ST 4554B2F FM 9058F

DP 110F DP 117B2F DG 2242B2F FM 9068F BW 2038B2F

Petersburg August 18, 2006

700800900

10001100120013001400

Lbs o

f lin

t/acr

e

PM 2326RR FM 989RR BCG520R AFD 5065B2F PM 2280BR NG 2448R

PM 2266RR PM 2167R ST 5242BR FM 989B2R NG 1553R FM 9060F

FM 960B2R DG 2100B2F BCG 50R FM 9058F FM 960BR FM 960RR

FM 9063B2F BW 3255B2F CG 3020B2F BW 4021B2F ST 4357B2F CG 3520B2F

FM 9068F DP 424B2R DG 2242B2F AT Summitt B2F DP 117B2F BW 2038B2F

ST 4664F ST 4700B2F AT Atlas RR ST 4554B2F DP 110F

Petersburg 2006

0

0.4

0.8

1.2

1.6Re

l. Yi

eld+

(1-R

el.

wilt)

PM 2326RR AFD 5065B2F BCG 520R FM 989RR NG 2448R PM 2167R

ST 5242BR FM 989B2R PM 2266RR DG 2100B2F NG 1553R BW 3255B2F

PM 2280BR FM 9063B2F CG 3020B2F FM 9060F ST 4664F DP 424B2R

FM 960RR BW 4021B2F FM 960BR ST 4700B2F FM 960B2R BCG 50R

CG 3520B2F FM 9058F AT Atlas RR ST 4357B2F AT Summit B2F DP 117B2F

ST 4554B2F DG 2242B2F DP 110F FM 9068F BW 2038B2F

Petersburg 2006

HVI values and their relationship with Verticillium wilt for Petersburg

Micronaire Uniformity Loan value

Correlation

With % Wilt

-0.45 -0.54 -0.49

Prob. > t 0.0001 0.0001 0.0001

y = -17.557x + 1615

R2 = 0.4582

700800900

1,0001,1001,2001,3001,4001,5001,600

0 5 10 15 20 25 30 35 40% Wilt

Lbs

of

lint

/acr

e

Slaton August 24

0

10

20

30

40%

Wilt

FM 832LL AFD 5064F PG 440W AFD Raider 271

FM 988LLB2 NG 2448R FM 958LL FM 989BR

DG 2242B2F PG 125F FM 832 FM 960BR

FM 966LL BCG 50R FM 981LL DP 117B2F

FM 5035LL FM 965LLB2 BCG 245 DP 393

AM 1532B2F AFD 5062LL FM 955LLB2 DP 448B

NG 3550F AM 427R AT Marathon B2F AT Atlas

FM 958 BCG 295 AM 8120 CG 4020B2F

Slaton August 24, 2006 Drip

700900

110013001500

Lbs o

f lin

t/acr

e

FM 960BR FM 988LLB2 PG 440W AFD 5064F

FM 958LL FM 989BR AFD Raider 271 NG 2448R

FM 832LL FM 966LL FM 981LL FM 5035LL

FM 965LLB2 FM 958 AFD 5062LL PG 125F

DG 2242B2F AT Atlas DP 448B DP 117B2F

FM 955LLB2 AM 8120 AM 1532B2F BCG 245

NG 3550F AT Marathon B2F AM 427R CG 4020B2F

BCG 50R BCG 295 DP 393 FM 832

Slaton 2006 drip

0

0.5

1

1.5

2

(1-R

elat

ive

Wilt

)+R

elat

ive

Yie

ld

AFD 5064F FM 832LL PG 440W AFD Raider 271

FM 988LLB2 FM 958LL NG 2448R FM 960BR

FM 989BR FM 966LL DG 2242B2F PG 125F

FM 981LL FM 5035LL FM 965LLB2 DP 117B2F

AFD 5062LL BCG 245 BCG 50R FM 832

AM 1532B2F DP 448B FM 955LLB2 NG 3550F

DP 393 AT Atlas FM 958 AT Marathon B2F

AM 427R AM 8120 CG 4020B2F BCG 295

Slaton 2006 Drip

y = -8.4075x + 1357.6

R2 = 0.1934

600

800

1000

1200

1400

1600

1800

2000

0 10 20 30 40 50

% Wilt

Lbs

of

lint

/acr

e

Levelland August 8, 2006

05

10152025

% W

ilt

PM 2326RR DP 455BR NG 3273B2F ST 5007B2F

FM 989BR AT Patriot RR DG 2520B2F BW 3552B2F

FM 960B2R FM 960BR AT Atlas RR PG 125F

BW 9775B2F AT Apex B2F CG 4020B2F AM 427R

FM 960RR BW 4630B2F AT Titan B2F PG 480WR

BCG 50R AT Marathon B2F NG 3550F AM 1532B2F

PG 425F BW 3220B2F PG 485WF PG 370WR

DP 454BR

Levelland August 8, 2006, Drip

8001000120014001600

Lbs o

f Li

nt/a

cre

FM 960BR FM 960B2R DP 455BR PM 2326RR

FM 989BR DG 2520B2F PG 480WR AT Apex B2F

AT Patriot RR FM 960RR PG 425F PG 485WF

AT Marathon B2F BW 4630B2F NG 3273B2F AM 1532B2F

CG 4020B2F AM 427R NG 3550F PG 125F

BW 9775B2F ST 5007B2F AT Titan B2F BW 3220B2F

DP 454BR BW 3552B2F BCG 50R AT Atlas RR

PG 370WR

Levelland 2006, Drip

0

0.4

0.8

1.2

1.6

(Rel

. Yie

ld +

(1

-Rel

. Wilt

))

PM 2326RR DP 455BR FM 960BR FM 960B2R

AT Patriot RR FM 989BR DG 2520B2F NG 3273B2F

AT Apex B2F ST 5007B2F FM 960RR PG 125F

CG 4020B2F BW 9775B2F AM 427R PG 480WR

BW 3552B2F BW 4630B2F AT Marathon B2F PG 425F

AT Titan B2F AT Atlas RR NG 3550F AM 1532B2F

PG 485WF BCG 50R BW 3220B2F DP 454BR

PG 370WR

Levelland 2006, Drip

HVI and the relationship with Verticillium wilt at Levelland

Correlation with % Wilt

Prob. > t

Micronaire -0.48 0.0001

Uniformity -0.25 0.04

Leaf Grade 0.30 0.02

Degree of reflectance

-0.32 0.01

Loan value -0.50 0.0001

ConclusionsConclusions

1) 2005 recommended varieties (FM 960 types, FM 989 types, DP 455BR) looked good again in 2006.

2) The only Flex varieties that looked good were AFD 5064F and AFD 5065B2F (tested at one site only with Verticillium wilt).

3) PM 2326RR was highly ranked in two tests. BCG 520R, AFD Raider 271, PG 440W, FM 832LL, and FM 988LLB2 were highly ranked at one site.

Thanks to the Cotton State Support Committee and Plains Cotton Improvement Programs for funding support.

Thanks to the producers for allowing us to test the varieties in their fields: Chris Bednarz (Slaton), Preston Turner (Levelland), Cooper Ellison (Petersburg), Walter King (Brownfield).

Thanks to the IPM and County agents that assisted in the sites: Kerry Siders (Levelland), Scott Russell (Brownfield), Emilio Nino (Earth), Warren Multer (Garden City) and Michael Dollie (Petersburg).