Metaflumizone, a new BASF insecticide for Lygus management in cotton
BASF Corporation, Research Triangle Park, North Carolina, USA
Correspondence: john.harden@basf.com
In field studies with Lygus hesperus, foliar treatments of metaflumizone at 280 g ai/ha (EC and SC formulations), acephate (1.12 kg ai/ha), or flonicamid (98 g ai/ha) in cotton significantly increased seed cotton yields compared to yields in untreated plots. In order to maintain levels of L. hesperus below economic thresholds, four applications of metaflumizone (SC) were required; whereas, only two were needed of metaflumizone (EC), acephate, and flonicamid. Rotational treatment programs of metaflumizone (EC)/acephate, metaflumizone (EC) /flonicamid, and metaflumizone (EC) /flonicamid /acephate resulted in similar outcomes at harvest. Field studies comparing formulations of metaflumizone on Lygus lineolaris indicates that foliar treatments of metaflumizone as an EC formulation are superior to that of an SC formulation. Metaflumizone EC at 280 g ai/ha was comparable to acephate at 560 – 1120 g ai/ha as the standard for Lygus control. Mortality was slower to occur than with acephate, but cotton yields were equal. This led to the conclusion that L. lineolaris damage to the crop had ceased following the application of metaflumizone. Metaflumizone is being developed as part of a Lygus Integrated Pest Management (IPM) program. Treatments which include metaflumizone at 280 g ai/ha are: metaflumizone fb acephate fb dicrotophos, metaflumizone + cyfluthrin fb acephate fb dicrotophos, thiamethoxam fb metaflumizone, acephate fb metaflumizone + cyfluthrin. The standard for comparison is thiamethoxam fb dicrotophos fb acephate. Yields taken from the treatments containing metaflumizone are comparable to that of the standard.
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