Dr. Michael Stout, LSU AgCenter Department of Entomology * Integrated pest management in the rice system * Incorporating new insecticides

1. Integrated pest management in the rice system Incorporating new insecticides Dr. Michael Stout, LSU AgCenter Department of Entomology E-mail: mstout@agcenter.lsu.edu 11:15 to noon

3. The “drivers” of pest management decisions in rice Rice water weevil Rice stink bug

5. Adult overwintering Larval feeding Mating and oviposition Adult feeding

8. Q: Which of the seed treatments should you choose?

9. Q: Which of the seed treatments should you choose? A: it depends on which pests typically infest your fields

10. Spectrum of activity Cruiser Dermacor X-100

11. Spectrum of activity: what pests do they control? Dermacor X-100 Cruiser Maxx X Rice water weevil X Rice water weevil Colaspis X Colaspis X Stem borers Stem borers Sucking pests –chinch bugs, aphids X Sucking pests –chinch bugs, aphids X Other Leps – fall armwyorm Other Leps – fall armwyorm X South American Rice Miner South American Rice Miner

15. Pyrethroids act by killing adults, thereby preventing egg-laying X

17. Apply pyrethroids when adults / feeding scars are present and fields are flooded A second application may be needed

18. Regardless of your choice of insecticides… Don’t put them in a position to fail!

21. 18% 39%

22. Tolerance is dependent on plant age… Zou et al., Crop Protect. 23: 543 (2004) 0 10 20 30 40 50 60 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 No. of immatures per core, 20 daf Standardized yield Flooded 28 d after seeding Flooded 42 d after seeding

24. The “drivers” of pest management decisions in rice Rice water weevil Rice stink bug

29. Rice Stink Bug Damage Feeding on flowers (non-filled seed ) Remove contents of developing kernels (partially-filled seed) Pecky rice and broken kernels Photograph by Boris Castro Photograph by Boris Castro

32. Sugarcane borer

43. Management of Sugarcane Borer Infestations in Rice Using Selected Rates of Insecticides, Louisiana 2004