Proceedings of the New Zealand Weed and Pest Control Conference

activity annual application assessment Auckland barley bioassay block Canterbury chemical clopyralid compared concentrations cost crops damage determined disease early effect eggs emergence established experiments field flowering fluazifop-butyl four fruit fungicides gave glyphosate grass growth Hamilton herbicides higher increased infection insecticide kg/ha larvae leaf leaves less loam mean measured method mite months N.Z. Weed North occurred P.O. Box pasture period Pest Control Conf plants plots populations predicted present Private Proc production programme quizalofop range recommended recorded reduced REFERENCES replicates reported Research residues resistance samples scale season seed seedlings shoot showed significant significantly Silwet similar soil species spray spring stage stem strains summer surfactant Table temperature tested thrips tillers treated treatment trees trial untreated Weed and Pest weed control weeks weight yield Zealand