Biological pest control in tree crops

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Mites on coconut; Sri Lanka fruit fly on mango and other host fruits,Baits for the control of cucurbit fruit flies

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  • Pretty crazy stuff you have there! We don't deal with anything like that in NC, but its always interesting to see what others do about pest problems.
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Biological pest control in tree crops

  1. 1. Biological pest control in tree crops Mites on coconut; Sri Lanka fruit fly on mango and other host fruits Baits for the control of cucurbit fruit flies Rachid Hanna
  2. 2. <ul><li>Aceria guerreronis on the </li></ul><ul><li>underside of coconut bract </li></ul>Severely damaged bunch Undamaged bunch Classical biological control of the coconut mite
  3. 3. Foreign exploration for the coconut mite and associated natural enemies in America continent
  4. 4. Phytoseiid mites on conconut Venezuela
  5. 5. Introduction and evaluation of Fopius arisanus for the control of the Sri Lanka fruit fly
  6. 6. Parasitism of B. invadens and five indigenous fruit fly species by F. arisanus <ul><li>Highest parasitism of B. invadens - New association of C. cosyra </li></ul>Mohammad et al. manusc. In prep 0.02 ± 0.01 3.50 ± 1.34 6 Ceratitis anonae 0.00 ± 0.00 0.00 ± 0.00 7 Ceratitis fasciventris 0.00 ± 0.00 0.17 ± 0.17 6 Ceratitis rosa 0.18 ± 0.05 9.38 ± 2.09 24 Ceratitis cosyra 0.37 ± 0.04 28.94 ± 3.57 17 Ceratitis capitata 0.67 ± 0.04 78.82 ± 8.01 22 Bactrocera invadens Proportion parasitized Parasitized pupae N Fruit fly species
  7. 7. Field evaluations of F. arisanus
  8. 8. Whole tree cages in guava orchards Orchard A Orchard B B. invadens added F. arisanus added A B Days after cage installation 0 3 6 9 12 0 3 6 9 12
  9. 9. Fopius arisanus introduced into Benin and Togo in 2009
  10. 10. Other evaluations <ul><li>Open field evaluations in five mango orchards in Benin and two in Togo; </li></ul><ul><li>Two citrus orchards in Benin </li></ul><ul><li>Similar evaluations on wild hosts: Terminalia and wild apple ( Irviginia gabonensis ) </li></ul><ul><li>> 100,000 parasitoids released </li></ul><ul><li>Recovery from all sites </li></ul><ul><li>Continuing to follow establishment </li></ul><ul><li>Additional releases in 2010 </li></ul><ul><li>Metarhizium: </li></ul>
  11. 11. Baits for the control of fruit flies in cucurbits
  12. 12. Management of cucurbit fruit flies with bait sprays GF-120 $624 Net gain $1425
  13. 13. Outlook <ul><li>Participatory evaluations with farmers </li></ul><ul><li>Other crops: e.g., tomato </li></ul><ul><li>Other baits: e.g., bait from waste yeasts from local breweries. </li></ul>

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