Ayanava HG presentation 13 april 2010


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This presentation was delivered on 13 April 2010 to the Home Grounds team of Alabama Cooperative Extension

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Ayanava HG presentation 13 april 2010

  1. 1. Pointers for Insect Control in Garden Vegetables<br />Dr. Ayanava Majumdar<br />Ext. Entomologist, State SARE Coordinator<br />Tel: (251) 331-8416<br />bugdoctor@auburn.edu<br />
  2. 2. Start with a Clean Garden<br />Remove plant debris<br />Bring weeds under control quickly<br />Choose vigorous hybrids<br />Choose good crop rotation (especially think disease carryover) <br />
  3. 3. Insect monitoring with traps<br />Pheromone traps are sold as kits by many companies (Planet Natural, Arbico Organics) and effective in detecting low insect populations.<br />Shown here are two low-cost wing traps that can be used for monitoring corn earworm & tobacco budworm in the backyard. <br />
  4. 4. ACES Insect monitoring project<br />(started in 2009)<br /><ul><li>What does trap catch tell you?</li></ul>Catch = Density x Activity<br /><ul><li>Commercial traps/lures were used
  5. 5. Advantages of IPM traps: Specificity, Sensitivity, Simplicity, Safety </li></ul>Sites monitored for pest insects in 2009 commercial crops are marked with a star >><br />
  6. 6. Trap catches in 2009<br />Insect catches (June-Oct.):<br />Total = 8,586<br />Lesser cornstalk borer = 3,586<br />Fall armyworm = 1,386<br />Beet armyworm = 1,377<br />Corn earworm = 589<br /> Southern armyworm = 393<br /> Tobacco budworm = 342<br /> Soybean looper = 230<br /> Cabbage looper = 223<br /> Corn rootworm: Southern = 253; Western = 13<br /> Black cutworm = 125<br /> Diamondback moth = 65<br /> Tomato pinworm = 4<br /> European corn borer = 0 <br /> Stink bugs = 0 (trap/lure problem)<br />Expect these insects in your backyard too <br />
  7. 7. Insect monitoring with pit-fall traps<br />Estimate insect activity on soil surface. Insects follow the guide sticks and drop into the trap (a ½ cup of water).<br />Guide stick<br />
  8. 8. Light trapping insects: The quick & easy way<br />Water-filled bowl under porch light can be a simple light trap in summer. Add some dish detergent to the water to drown moths and beetles that will be attracted to the light. During rain, remember to remove the container. Keep records of your collection.<br />
  9. 9. IF you do insect trapping…<br />Maintain a record of start and finish each year<br />Record number of insects in trap each week<br />Draw chart of insect numbers and note the peak flight period (see next slide for example)<br />Scout your main crop for larvae/crop damage<br />Correlate the insect number in trap to actual crop damage<br />Do these steps in multiple years and you will become a true entomologist!<br />Be able to predict a pest outbreak using population data<br />
  10. 10. Example of insect monitoring using pheromone trap: <br />Corn earworm/tomato fruitworm<br />Population density in Mobile & Baldwin Co.<br />Monthly average activity <br />Arrows (above) indicate peak activity periods.<br />16<br />11<br />Year 2009<br />
  11. 11. Try different IPM tactics<br />Deep tillage, soil solarization…can expose and kill insects.<br />Trap crops (squash, sunflower) for sucking pests + contact poison<br />Trap crop (squash)<br />Main crop<br />Main crop<br />Main crop <br />(watermelon, cantaloupe, cucumber)<br />Trap<br />
  12. 12. Try different IPM tactics<br />Physical barriers to insects:<br /><ul><li>Reflective mulch (white, silvery)…when plants are small
  13. 13. Row covers for insect control (light weight material)
  14. 14. Insect nets from fine cotton material (sold in Walmart)
  15. 15. Plant collars to repel soil insects</li></ul>Use insecticides after proper identification & as a last resort…<br />
  16. 16. Selecting Pesticides for Home Gardens: It is a Jungle out there!<br />Insecticides displayed by bottle size, not the Active Ingredient (AI)<br />
  17. 17. Who doesn’t love Malathion?<br /><ul><li>Spidermites, aphids, stink bugs
  18. 18. At least 7 companies make formulations
  19. 19. Read label before use in vegetables </li></li></ul><li>Friend of friends – Bacillus thuringiensis(Bt)<br /><ul><li> Caterpillars in cool-season crops, tomatoes, pepper
  20. 20. Frequent appl., thorough coverage needed
  21. 21. 0 Pre Harvest Interval (PHI)</li></li></ul><li>Pyrethrin on Vegetables<br />Has sulfur, can burn leaves<br /><ul><li> Broad-spectrum
  22. 22. RTU on select vegetables</li></li></ul><li>Green Light Organic Products<br />Pyrethrin<br />(armyworm, loopers, cutworm, aphids, psyllids)<br />Neem (oil)<br />Neem II (oil + pyrethrin)<br />
  23. 23. Insect control granules in vegetables<br /><ul><li> Contact & stomach poison
  24. 24. Back of the bag has broad vegetable label for ants, armyworms, grubs, etc.
  25. 25. Long residual</li></ul>Bifenthrin (AI) granules: can be applied once when preparing soil or after planting (mix well in soil). Bifenthrin spray or RTU can be applied multiple times 7 days apart. Try rotatin Sevin or BugBGon with alternative insecticides.<br />
  26. 26. Bayer’s line-up of products…<br /><ul><li> Systemic poison
  27. 27. Apply at first sign of insects (aphid, thrips, WF, beetles)
  28. 28. Best as PoE drench</li></ul>Product on rebate on BayerAdvanced.com!<br />Bayer Advanced FCV<br />
  29. 29. Spinosad…a good rotation partner<br /><ul><li> Excellent for thrips, leafminers, looper, DBM, CPB, control
  30. 30. 1 day PHI</li></li></ul><li>Toxicity of formulations<br />Source: Penn State Univ. IPM Program<br />
  31. 31. For downloading a quick chart on insecticides for home gardens, please visithttps://sites.aces.edu/group/commhort/vegetable/vegfactsheets/default.aspx<br />