Trap cropping in vegetables 2012

2,359 views

Published on

This is a new presentation on trap cropping developed by Dr. Rammohan Balusu of Auburn University, Alabama. Please contact a Regional Extension Agent for more information.

Published in: Education, Technology
1 Comment
4 Likes
Statistics
Notes
  • How a beneficial approach very near to nature
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total views
2,359
On SlideShare
0
From Embeds
0
Number of Embeds
5
Actions
Shares
0
Downloads
0
Comments
1
Likes
4
Embeds 0
No embeds

No notes for slide
  • The traditional way of managing these insect pests is use of broad spectrum, highly toxic insecticides
  • Which trap crop you choose depends on the pests you trying trap.
  • Trap cropping in vegetables 2012

    1. 1. TRAP CROPPING FOR VEGETABLE INSECT PEST MANAGEMENT Rao Balusu1 Ayanava Majumdar2 Henry Fadamiro1 1Department of Entomology and Plant Pathology Auburn University, Tel: (334) 844-1457, balusrr@auburn.edu 2GulfCoast Research & Ext. Center 8300 State Hwy 104, Fairhope AL 36532 1
    2. 2. OverviewIntroductionWhat is trap cropping?Importance of trap croppingMajor trap cropping principlesTrap cropping techniques/layoutsCase studiesAdvantages/disadvantagesConclusions 2
    3. 3. Introduction AL produces about 34 different vegetable cropsArea = 6000 acresCrop value = $20 milMostly for fresh marketMajor crops: Tomatoes Sweet corn Sweet potatoes Potatoes Watermelon Crucifers (turnip, collards, mustard greens etc.) 3
    4. 4. Sucking pests Brown stink bug Southern green stink bug(Euschistus servus) (Nezara viridula) Leaffooted Bug (Leptoglossus phyllopus) Damage Images from Bugguide.net
    5. 5. Sucking pests Squash bug Potato aphid (Anasa tristis) (Macrosiphum euphorbiae) Green peach aphid Melon aphid (Myzus persicae) (Aphis gossypii) Aphid images from UFL-IFAS
    6. 6. Importance of Trap CroppingHeavy use of insecticides (28 chemistries)Use of insecticides resulted in  Insecticide resistance  Non-target effects (environment, natural enemies)Need to look at alternative pest management tacticsTrap cropping is one of those valuable pest management techniques
    7. 7. What is Trap Cropping?Trap cropping is the planting of an attractivehost plant to lure insect pests away from maincrop.Trap crop may or may not be harvestable. http://joyfusions.com/
    8. 8. Major Principle of Trap CroppingInsects have differential host preferenceInsects may feed and reproduce on preferred host
    9. 9. Major Principle of Trap CroppingMain crop and trap crop are same species(used for squash production)Main crop and trap crop are differentspecies (commonly used)
    10. 10. Key Factors to ConsiderDifferent insects attracted to different trap crops: If trap crop is not sufficiently attractive to the pest then it will not workLay out of the trap crop: For some insects it is sufficient to plant the trap crop around the border of main crop- Perimeter Trap Cropping Others are harder to stop and may need to interplant trap crop to draw them off the main crop
    11. 11. Key Factors to ConsiderTiming: Important to have well established trap crop at right stage at the time of insect invasionScouting: Control the pests immediately in the trap crop Be ready to sacrifice your trap cropKeep farm records Keep learning and use what you learn in next seasonDon’t expect trap crop to provide perfect control with extreme pest populations
    12. 12. Trap cropping layout Perimeter Trap Cropping (PTC)Trap crop (squash) • Trap crop = early planted squash, apply insecticide on borders • Squash lured 66% cucumber Main crop beetles and 90% squash bugs(watermelon, canta loupe, cucumber) • Crop losses reduced by 18% Boucher & Durgy (2004)
    13. 13. Trap cropping layout Strip interplant trap cropping Lygus bug managementStrawberry Strawberry (34 rows) (34 rows) Alfalfa
    14. 14. University of CA ResearchSuccesses:• >50% reduction of lygus bugs (vacuum + wasp parasite)• 75% saving on tractor time with trap crop Sean Swezey et al., 2007 (CA Agriculture)
    15. 15. Managing Yellow margined leaf beetle (YMLB) Population with Trap crop  YMLB is a serious pest of cruciferous crops • Cabbage • Turnips • Mustard • Radish etc.  Migrates into vegetable field in early October  Damage: October – May
    16. 16. What you need to know about YMLB
    17. 17. Damage  Both adults and larvae feed on foliage by first making small holes; later serious defoliationDefoliation of larvae on turnip Mass attack of adults on napa cabbage
    18. 18. Field Trials-Managing YMLB with Trap crop Spring 2011Trap crop: Turnip and Napa cabbageMain crop: CabbageLocation: E. V. Smith Research Center, Shorter, AL Trap crop: planted 2 weeks in advance 5 ft
    19. 19. Field Trials-Managing YMLB with Trap crop Spring 2011 Napa cabbage Main crop Trap crop Turnip 35 ft
    20. 20. Field Trials-Managing YMLB with Trap crop Spring 2011 6 Mean ( SE) beetles/ plant Control 5 Cabbage (main crop) 4 Turnip (trap crop) 3 2 1 0 April 15, 2011 April 25, 2011
    21. 21. Field Trials-Managing YMLB with Trap crop Spring 2011 Napa cabbage Trap crop Main crop
    22. 22. Trap Cropping - 2011 Demonstrations Locations: Brewton Main crop:Tomato Trap crop: Sorghum Sorghum Perimeter TC (NK300)
    23. 23. Trap Cropping - 2011 DemonstrationsTarget insects: Stink bugs, Leaffooted bugsVarieties: •Sorghum (TC): NK300 @10 lb/ac, 8 plants/ 3 ft row •Tomato (Tomato): Celebrity, Bella RosaDate of planting: •Trap crop : May 23 •Main crop: June 6Distance between sorghum and tomato row = 9 ftPlant heights on July 18: •Sorghum: 5 ft •Tomato: 1.8 ftMAJOR INSECT PEST: Leaffooted bugs (LFB), some stink bugSorghum: lambda-cyhalothrin (Warrior @ 3.8 fl oz) & zeta-cypermethrin (Mustang Max @ 4fl oz)
    24. 24. Leaffooted bug numbers on ten sorghum panicles versus ten tomato plants with green fruits August 12 August 29 Sorghum trap Tomato main crop Sorghum trap crop Tomato main crop crop Crop 60% panicle Green fruit stage 95% panicle Green and red fruit stage>> emergence emergence stage 1 0 0 1 0 2 0 0 0 0 3 0 0 2 0 4 1 1 0 0 5 1 0 3 0 6 1 0 2 0 7 0 1 2 0 8 0 0 0 0 9 0 0 0 1 10 1 0 0 0 Av. 0.4 0.2 1.0 0.1LFBs migrate out of main crop to sorghum trap crop duringpeak activity period = better harvest potential for tomatoes
    25. 25. Trap Cropping - 2011 Demonstrations Video
    26. 26. Results:Aphid infestations on okra trap crop vs. tomato main crop, Fairhope. Observation date OKRA Trap Crop TOMATO Main Crop Aphids per sample* Aphid incidence** Aphid incidence** May 23 0 0 1% May 31 0 0 1% June 7 0.6 30% 0 June 14 0.9 20% 0 June 20 6.7 30% 0 June 27 0.4 7% 0 July 5 7.9 35% (neem) 0 July 11 3.1 21% (malathion) 0 July 18 5.4 7% 0 Average 0.9 16% <1% *Average aphid numbers on 10 top leaves. **Aphid incidence is the percentage of top 10 leaves with at least one aphid on it.Major findings:OKRA very attractive to aphidsNeem oil (Molt-X) and synthetic insecticides can be rotated
    27. 27. Advantages of trap croppingReduces pest incidence to manageable levels Reduces overuse of insecticidesSave $$ Conserves or attracts natural enemiesAllows small startup without investing in large equipment May pay for itself if trap crop is harvestable Can be integrated with insect monitoring systems, insecticides
    28. 28. Disadvantages of trap croppingGrowers need knowledge of insect behavior & migration Need for additional planning and resourcesInsecticide may still be needed Timely management of insects in trap crop: otherwise you have a “pest nursery”TC work best one or few related pest BUT NOT ALL PESTS!!
    29. 29. If you use trap cropping then…Choose trap crops that have rapid growth…Plant trap crop on good land…Proportion of land in traps ~10-20%…Plant many rows of trap crop, staggered…

    ×