Peanut insect pests

Dr. Ayanava MajumdarExt. Entomologist, State SARE Coordinator

Gulf Coast Research & Ext. Center

8300 State Hwy 104, Fairhope AL 36532

Tel: (251) 331-8416

[email protected]

Take the Pre-test IPM Insect Monitoring project

Insect ID, peak activity, weather impact Pest outbreaks 2009

Insect biocontrol project on thrips Move toward soil insect pest management

Extension resources Take the Post-test after talk

Funded by EIPM, SPRI grants

Res. objectives: to determine insect species distribution, first occurrence & peak activity, weather effect on activity… forecast pest outbreaks??

Ext. objectives: establish a Pest Advisory system (rapid communication), to demonstrate advantages of traps to clientele, motivate technology adoption

14 ACES personnel Insect traps N-S (veg.) &

E-W (peanut) Pheromone traps:

commercial types Trapping period: June-

October Outcomes: identified

8500+ specimens, 500+ traps bottoms

IPM-CORE for outreach

HINT: Several outbreaks of this insect occurred in soybean, peanuts, cotton, and forage crops.

4 (4)

10 (3)

21 (4)

33 (5)

49 (5)

25 (5)

8 (5)

19 (6)

36 (6)

Late-Aug., Sept

Late-July

Late-July, Aug., Sept.

27 (6)

Inconsistent trend

Weather impact:

Temp: -Rainfall: ??

Rain days: + 25 (4)

Statewide total = 1377

HINT: Several outbreaks of this insect occurred in the deep south

Outbreak of armyworms in soybean, peanuts

20 (4)

19 (3)

15 (4)

32 (5)

48 (5)

16 (5)

13 (5)

27 (6)

36 (6)

Late Aug. & Sept.

Late Aug. & Sept.

July, Aug., Sept.

29 (6)

Late July-Aug.

Weather impact:

Temp: Str. -Rainfall: ??

Rain days: Str. +

17 (3)

12 (4)


Microspines

3 (4)

2 (3)

7 (4)

20 (5)

15 (5)

3 (5)

6 (5)

6 (6)

3 (6)

Early Sept.

Early Aug. , Sept.

Late Aug., Sept.

1 (6)

Late July, then none3 (3)

Weather impact:

Temp: mixed

Rainfall: NS

Rain days: NS


Microspines

6 (4)

10 (3)

25 (4)

12 (5)

16 (5)

7 (5)

5 (5)

3 (6)

11 (6)

June, Aug., Sept.

July, Aug.

Aug., Sept.

8 (6)

3 (3)

8 (4)

Weather impact:

Temp: -Rainfall: NS

Rain days: NS


17 (4)Late Aug.

2 (4)

3 (3)

4 (4)

4 (5)

1 (5)

4 (5)

2 (5)

1 (6)

3 (6)

Late Aug.

July

July, Aug.

3 (6)

1 (3)

Weather impact:

Temp: -Rainfall: NS

Rain days: NS


Early July

Lesser cornstalk borer in many crops (Clarke, Washington, Escambia Co., Henry Counties)

119 (5)

116 (5)

76 (5)

46 (5)

142 (6)

143 (6)

July, Aug.

July, Aug.

Late Aug., Sept., Oct.

77 (4)

Weather impact:

Temp: NS

Rainfall: NS

Rain days: +


Corn rootworm damage to peanuts (Baldwin Co., Henry Co.)

Wireworm damage to peanuts (Baldwin Co.)

4 (4)

28 (3)

3 WCRW

12 (4)

7 (5)

1 (5)

1 (5)

4 (5)

2 (6)

June, July

June

June

8 (6)

1 WCRW

Weather impact:

Temp: NS

Rainfall: mixed

Rain days: mixed


June

WCRW SCRW

For IPM photo archive: www.aces.edu/go/85 Insect Pest Advisories: July-October (15 in 2009)

Timely Information on AlabamaCrops.com, AGFAX.COM, www.aces.edu

Pest Advisory Hotline (weekly renewed):

1-800-446-0375 Signup for alerts email [email protected] Several revisions to Peanut IPM Guide (ANR-500) Look at the IPM display before you leave today

www.aces.edu/go/85

Subscribe to get FREE Advisories!

Generate information that you can use WITHIN SEASON

Know what to scout for & when to scout INTENSIVELY

Automatic identification of closely related species

Save time, save money!

Goal: Encourage registration of biological insecticides Focus on soil insect pest control (alternative to

chlorpyrifos)

Tobacco thrips Western flower thrips

Locations: Fairhope (22 May), Headland (8 June) Peanut variety: Georgia green Insecticides tested:

Temik (aldicarb) @ 0.5 lb AI/acre Thimet (phorate) @ 0.38 lb AI/acre BotaniGard ES (Beauveria bassiana) @ 1-2

quart/acre QRD452 (Chenopodium) @ 1-2 quart/acre Radiant (spinetoram) @ 4-8 oz/acre

Thrips sampling: foliar sampling 7 DAT using bags Virus hits recorded twice in July

Thrips biocontrol test, Fairhope

TSWV vs. healthy peanut plant

1

2

3

4

56

7

Untr. check: 40 thrips per 5 plants, 2-7 virus hits per 60 ft row


1

Spinetoram (split applications) + phorate (both ½ rates)

6 thrips per 5 plants, <1 virus hit per plot

Fast knockdown product…less virus hits


1

Beauveria (split appl.) + phorate (both ½ rates)

35 thrips per 5 plants, 2 virus hit per plot

Slow product…virus hits increase

2


1

QRD 452 (split appl.) + phorate (both ½ rates)

29 thrips per 5 plants, <1 virus hit per plot

Slow product…virus hits increase

2


Lessons from 2009 biocontrol study (Phase I)

• Tobacco thrips is a threat in absence of varietal resistance and/or insecticidal treatment

• Insecticides have sign. effect on thrips nos., not spotted wilt

• Placement and timing are important for biological products

• Split applications of bio-formulations is possible

• Phase II – Develop delivery techniques for managing soil insect pests

New directions to biocontrol research…

• Screen virulent insect pathogens and formulations for soil insect pests

• Product placement around seed (“spore minefield”) to increase persistence

• Develop biointensive IPM plan for sustainable peanut production

IPM-CORE• New Integrated Peanut Entomology Website:

SUBSCRIBE TO THIS FOR AUTOMATIC EMAIL UPDATES

IPM-CORE

• NEW IPM4PEANUTS YOUTUBE CHANNEL:

SUBSCRIBE TO THIS FOR AUTOMATIC EMAIL UPDATES

PLEASE COMPLETE THE POST-TEST NOW. THANK YOU VERY MUCH!

Peanut insect pests

Education

Transcript of Peanut insect pests