1 / 19

József, TAKÁCS – Miklós, NÁDASY – Péter, BALOGH

Control of larvae of the western corn rootworm /WCR/ ( Diabrotica virgifera virgifera LeConte , 1868 ). József, TAKÁCS – Miklós, NÁDASY – Péter, BALOGH University of Veszprém, Georgikon Faculty of Agriculture, Institute of Plant Protection, Department of Agricultural Entomology.

katoka
Télécharger la présentation

József, TAKÁCS – Miklós, NÁDASY – Péter, BALOGH

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Control of larvae of the western corn rootworm /WCR/(Diabrotica virgifera virgifera LeConte, 1868) József, TAKÁCS –Miklós, NÁDASY – Péter, BALOGH UniversityofVeszprém,GeorgikonFaculty of Agriculture, Institute of Plant Protection, Department of Agricultural Entomology

  2. Female adult Portorož, 2005 feb. 28. - march. 05.

  3. Damages on leaves and tassels Portorož, 2005 feb. 28. - march. 05.

  4. Damages on silk and ears Portorož, 2005 feb. 28. - march. 05.

  5. Larvae of WCR Portorož, 2005 feb. 28. - march. 05.

  6. Root damage and plant lodging Portorož, 2005 feb. 28. - march. 05.

  7. Life cycle of WCR Portorož, 2005 feb. 28. - march. 05.

  8. Biology of the pest Diabrotica • Overwinter in egg state (about 8 to 10 months in soil) • Prolonged hatching of eggs (longer than a month) • Three larval instars (Root damages under a two month period) • Oviposition from July to October Portorož, 2005 feb. 28. - march. 05.

  9. Problems of WCR • Continuous hatching of eggs • Problems of soil insecticides: High doses, risk of soil pollution Expensive Period of effectiveness • Problems of seed coating: Period of effectiveness (less than a month) • Need longer effectiveness period • No need soil pollution Portorož, 2005 feb. 28. - march. 05.

  10. MAVICELL pearl • Microporous build • Able to bind over triple dose of insecticide agents • Prolonged transmittance of the agents even under two months • 100 % cellulose • Disorganize under three months in soil Portorož, 2005 feb. 28. - march. 05.

  11. Porous body of MAVICELL pearl Large absorptive surface to bind chemical and biological agents Portorož, 2005 feb. 28. - march. 05.

  12. Greenhouse screening Test object: Tanymecus dilaticollis GILLENHAL Mortality: Over 95 % even after the 60th day. Portorož, 2005 feb. 28. - march. 05.

  13. Plough land applications Seeding machines: - Kuhn Planter Junior - Monosem NG Pus - JohnDeere Maxemerge Portorož, 2005 feb. 28. - march. 05.

  14. Problems of sowers • Monosem: Its micro-granule adaptor not able to sow the large pearls (necessary to change the adaptor for sowing micro-granules) • JohnDeere: Its not able to sow the complete dose of the pearl (only half dose) Portorož, 2005 feb. 28. - march. 05.

  15. Observations and dataprocessing • Inspection of regularity of sowing • Estimation of the number of early stage pests (Corn Weevils – Tanymecus dilaticollisGILLENHAL) • Measuring of larval damages with IOWA or Oleson-Tollefson scales • Estimation of lodging after growth of ears • Statistical analysis Portorož, 2005 feb. 28. - march. 05.

  16. Results of MAVICELL and differences between treatments Average damages in: Control: IOWA value 5 Soil treatment (Furadan): IOWA value 4 MAVICELL treatments: Under economical threshold (IOWA value 3,5) Portorož, 2005 feb. 28. - march. 05.

  17. Statistical analysis of damaging on roots after washing Portorož, 2005 feb. 28. - march. 05.

  18. Results • After three years of investigation we can say: MAVICELL is able to protect maize against WCR! • Are there any losses of quality of pearl or agents? Checking with greenhouse screening! • Costs of a hectare are much cheaper than the same with soil insecticides! • We need to find a reliable method or seeding-machine to sow the pearls under the rows of corn!!! Portorož, 2005 feb. 28. - march. 05.

  19. Thank you for your attention! Portorož, 2005 feb. 28. - march. 05.

More Related