Evaluation of insecticides for the control of the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae), on sweet corn, Zea mays (L.), in New Zealand

Autor: R. B. Chapman, P. J. Cameron, S. I.. Davis, J. R. Sedcole, Steve D. Wratten, J. H. Rea
Rok vydání: 2003
Předmět:
Zdroj: International Journal of Pest Management. 49:105-108
ISSN: 1366-5863
0967-0874
DOI: 10.1080/0967087021000038090
Popis: The efficacy of insecticides for the control of Nezara viridula (L.) (Hemiptera: Pentatomidae), the green vegetable bug, was tested in laboratory and field trials. Bioassays of 11 insecticides against field-collected adults were used to select two insecticides for a field experiment conducted in a process sweet corn crop, Zea mays (L.) (cv. Punch), near Tolaga Bay on the east coast of the North Island, New Zealand. Lambda-cyhalothrin (as 200 ml Karate®/100 litres water ha m 1 ) and methamidophos (as 1 litre Tamaron TM /100 litres water ha m 1 ) were tested against a water control. Both insecticides demonstrated efficacy, with respective mortality rates of 87 and 83% compared with 2% in the control. Green vegetable bug flew into the experimental crop in large numbers over 48 h before the start of the trial. Damage thresholds were exceeded in two of the three control plots within 7 days of the green vegetable bug first invading the crop, leaving only a very small 'window' for insecticide application. Succes...
Databáze: OpenAIRE