Peanut insect pests
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Transcript of 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
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)
Statewide total = 1386
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
Statewide total = 342
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
Statewide total = 589
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
Statewide total = 125
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: +
Statewide total = 3586
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
Statewide total = 266
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
Thrips biocontrol test, Fairhope
1
Spinetoram (split applications) + phorate (both ½ rates)
6 thrips per 5 plants, <1 virus hit per plot
Fast knockdown product…less virus hits
Thrips biocontrol test, Fairhope
1
Beauveria (split appl.) + phorate (both ½ rates)
35 thrips per 5 plants, 2 virus hit per plot
Slow product…virus hits increase
2
Thrips biocontrol test, Fairhope
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
Thrips biocontrol test, Fairhope
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:
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IPM-CORE
• NEW IPM4PEANUTS YOUTUBE CHANNEL:
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PLEASE COMPLETE THE POST-TEST NOW. THANK YOU VERY MUCH!