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Field Crop Insect Update Changes in Pest Management

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Stink bug. Soybean stem borer. Armyworms. Soybean aphid. Bt's for Corn Pests ... Early Mid June. 6/5 - 6/14. 6.5. 20.7 * UKREC: Herbek, Johnson, Bessin ... – PowerPoint PPT presentation

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Title: Field Crop Insect Update Changes in Pest Management


1
Field Crop InsectUpdateChanges in Pest
Management
  • Ric Bessin
  • Extension Entomologist
  • University of Kentucky
  • Lexington

2
Pest Management Changes
  • Preventive Controls
  • Bt crops
  • Seed treatments
  • All seed treated with some companies
  • More stacked Bts (CB RW)
  • Pest Monitoring
  • Doug Johnson and Patty Lucas
  • Higher input costs/grain prices
  • Effect of Economic thresholds?

3
Changes in Pest Populations
  • Less Common
  • More common
  • Black cutworm
  • European corn borer
  • SW corn borer
  • Fall armyworm
  • Flea beetles
  • Wireworms
  • Corn Rootworm
  • Stink bug
  • Soybean stem borer
  • Armyworms
  • Soybean aphid

4
Bts for Corn Pests
  • YieldGard Corn Borer (Cry1Ab)
  • YieldGard Rootworm (Cry3Bb1)
  • YieldGard Plus (Cry1AbCry3Bb1)
  • Herculex (Cry1F)
  • Herculex RW (Cry34Ab1Cry35Ab1)
  • Herculex Xtra (Cry1FCry34Ab1Cry35Ab1)
  • Agrisure CB (Cry1Ab)
  • Agrisure RW (mCry3A)
  • Agrisure CB/RW (Cry1ABmCry3A)
  • YieldGard VT RW (Cry3Bb1)
  • YieldGard VT Triple (Cry1Ab Cry3Bb1)

5
Insects Controlled by Bt Corn
6
Future Directions of Bt Corn
  • Resistance Management
  • Redundant Bt genes
  • SmartStax
  • New refuge strategies
  • AcresMax

7
YieldGard RW, Urbana, July 2, 2007 Mike Gray,
Univ of IL
8
MONSANTO, DOW AGREEMENT PAVES THE WAY FOR
INDUSTRYS FIRST-EVER, EIGHT-GENE STACKED
OFFERING IN CORN Stacked product combines Dow
AgroSciences and Monsantos insect-protection
and weed control trait technologies product set
to deliver greater performance, value and options
for farmersINDIANAPOLIS and ST. LOUIS (Sept.
14, 2007) Monsanto (NYSE MON) and Dow
AgroSciences LLC, a subsidiary of The Dow
Chemical Company (NYSE DOW), have reached a
cross-licensing agreement aimed at launching
SmartStax, the industrys first-ever eight-gene
stacked combination in corn. The agreement is
expected to create a new competitive standard for
stacked-trait offerings and present an expanded
growth opportunity for both companies seed
brands and traits businesses by the end of the
decade.
9
Resistance Management
  • High-dose refuge strategy
  • Need 5001 susceptible to resistant ratio
  • No more than 80 Bt corn
  • Refuge within ½ mile for CB Bts
  • Refuge immediately adjacent for RW and CB/RW Bt
    lines

10
When is Bt Corn Needed?
  • Bt CB
  • Late planted corn
  • Corn planted after May 5
  • Bt RW
  • Corn following corn gt2 yrs
  • Bt CB RW
  • When both of the above is true

11
Yield Benefit by Planting Date, 6-Year Average
UKREC Herbek, Johnson, Bessin
12
Results of Hybrid Preformance Trials
  • Many Single, Double and Triple stacks yielded
    very well in 2007
  • Even where RW and CB pressure low

13
Seed Treatments
  • On virtually all corn seed
  • Providing insect control to help with stand
    establishment
  • Other benefits
  • Seedling vigor?

14
Seed Treatments and Vigor
  • In some studies, a yield bump not due to insect
    protection
  • Micro array data showing drought cold
    tolerance, and other stress related genes turned
    on
  • Does not occur in all situations, not well
    understood

15
Direction of Seed Treatments
  • Vigor enhancement
  • Nematode control
  • Resistance management new classes of
    insecticides for seed treatments

16
Insects Controlled
17
Pest Monitoring
  • Armyworm
  • Black Cutworm
  • ECB and SWCB
  • Corn earworm
  • Fall Armyworm

18
Overwintering SWCB Survival
Caldwell, Henderson, Davies, Hardin Counties Four
fields/county
19
Summary of European Corn Borer Fall
Surveys,University of Illinois
Extension1943-2007
Kevin Steffey Univ of IL
20
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21
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