Vapor Toxicity and Concentration-Dependent Persistence of Buprofezin Applied to Cotton Foliage for Controlling the Sweetpotato Whitefly (Homoptera: Aleyrodidae)

New developments in insecticide resistance in the glasshouse whitefly (Trialeurodes vaporariorum) and the two‐spotted spider mite (Tetranychus urticae) in the UK

“…Buprofezin exhibits similar volatility to some of the organophosphates (eg monocrotophos, 0.3 mPa; pirimiphos‐methyl, 13 mPa) and a much higher vapour pressure than the stable pyrethroids (eg permethrin, 0.0013 mPa) or other IGRs (eg teflubenzuron, 0.8 nPa). The effect of buprofezin's volatility on untreated whitefly nymphs has been noted previously,22 but, in that instance, the compound was applied at high rates (up to 450 mg AI litre −1 ) and effects were noted over very small distances (2–6 cm). Our work suggests that untreated nymphs can be affected by buprofezin vapour over much greater distances than previously reported.…”

Chitin synthesis inhibitors: old molecules and new developments

“…Buprofezin (( Z )‐2‐ tert ‐butylimino‐3‐isopropyl‐5‐phe‐nyl‐1,3,5‐thiadiazinan‐4‐one) belongs to the group of thiadiazine insect growth regulators. It is particularly effective in controlling hemipteran pests, including whiteflies (Yasui et al , 1985; De Cock et al , 1990) and scale insects (Yarom et al , 1988). Buprofezin was developed in Japan by Nihon Nohyaku Co, Tokyo, and shown to inhibit cuticle deposition and chitin biosynthesis in the brown planthopper, Nilaparvata lugens (Uchida et al , 1985).…”

“…in insects (Uchida et al, 1985). Yasui et al, 1985;De Cock et al, 1990 Chromo-/ fluorophors (Herth, 1980;Vermeulen & Wessels, 1986); affects cells walls morphogenesis in fungi (Roncero & Duran, 1985) and…”

Ultrastructural changes in the cuticle of the greenhouse whitefly Trialeurodes vaporariorum, induced by the insect growth inhibitor, buprofezin

“…Buprofezin (Applaud| 2-tert-butylimino-3-isopropyl-5-phenyl-3,4,5,6-tetrahydro-2H-1,3,5thiadiazin-4-one, an insect growth regulator (Kanno etal., 1981;Uchida etaL, 1985) acts specifically on sucking insects such as the whiteflies Trialeurodes vaporariorum (Yasui et al, 1985(Yasui et al, , 1987 and Bemisia tabaci (Ishaaya etal., 1988;De Cock et aL, 1990), the brown rice planthopper Nilaparvata lugens (Izawa et al, 1985;Nagata, 1986), and the scale insects Unarpsis yananessis, Aonidiella aurantii and Saissetia oleae (Yarom et aL, 1988;Kanno etal., 1981). This is in contrast to benzoylphenyl ureas, another group of insect growth regulators which are mainly active against non-sucking insects.…”