Effect of different adjuvants on the rainfastness of bendiocarb applied to Brussels sprout plants

Abstract

The tenacity of bendiocarb 50 w.p. applied with and without one of six adjuvants at a volume of 125 1/ha to the foliage of brassica plants ('Brassica oleracea germinifera') was evaluated before and after simulated rain by biological assay with 'Plutella xylostella' larvae. Of the adjuvants tested, only Bond Super Sticker and Codacide Oil caused a significant level of improvement in the rainfastness of bendiocarb. Bond Super Sticker and Codacide Oil, individually mixed with bendiocarb were also applied at high volume (600 l/ha) and a suspension of bendiocarb in undiluted Codacide Oil was applied at ultra low volume (5 l/ha). The ultra-low-volume treatment was most effective, providing complete plant protection even after 200 minutes of continuous high-intensity rainfall (36 mm/hour). Codacide Oil may be a suitable adjuvant for bendiocarb at all volumes of application.