Effects of kaolin particle film on Myzus persicae (Hemiptera: Aphididae) behaviour and performance

Abstract

The emergence of resistance mechanisms to, and revocation of, many insecticides used in the control of the polyphagus aphid pest, Myzus persicae (Sulzer), has increased the pressure to develop novel approaches for the control of the pest in many crops. Kaolin-based particle films provide a physical barrier against insect pests and show considerable potential for controlling M. persicae. We conducted a series of laboratory experiments to investigate the mode of action of kaolin against aphids. The material appeared to have no direct effect on M. persicae; spraying adult aphids with aqueous kaolin suspension had no significant impact on their subsequent survival or reproduction on untreated plants. Similarly, when aphids were placed on kaolin-treated host-plants (Brassica oleracea), their performance (survival, growth rate and reproduction) was not significantly different from aphids on untreated plants. However, when M. persicae were given a choice between kaolin-treated and untreated (or water solvent-treated) leaf areas, both adults and nymphs exhibited a significant preference for non-kaolin-treated host-plant material. Rejection of kaolin-treated plant material occurred very rapidly (within 20 min) and this behavioural effect may be related to the efficacy of kaolin in controlling aphids under field conditions.

Repellency of a kaolin particle film to potato psyllid, Bactericera cockerelli (Hemiptera: Psyllidae), on tomato under laboratory and field conditions

“…Repellency of kaolin particle film to various insects has been reported in the literature. Barker et al 32 found that, when Myzus persicae (Sulzer) were given a choice between kaolin‐particle‐film‐treated and untreated (or water‐solvent‐treated) leaf areas, both adults and nymphs exhibited a significant preference for non‐kaolin‐particle‐film‐treated host plants. Rejection of kaolin‐particle‐film‐treated plant material occurred very rapidly (<20 min).…”

Natuurvriendelijke bestrijding van bladluizen : voorkómen van hoge populatiedichtheden en curatief bestrijden

“…Kaolien mineraal kan worden toegepast als poeder dat op het blad een dunne witte laag achterlaat en dat bladluizen door de sterk reflecterende werking kan afweren (Barker et al 2007)…”

Thermo-Kinetics Studies of Dye Removal with Kaolin from Tectona grandis and Indigo Dye Effluents

“…Kaolin has been reported by Ma and Wang (2006) to be used in treatment of oil polluted water with about 99 % removal of chemical oxygen demand, biological oxygen demand, total dissolve solids and hardness. Other areas where it is utilized are pharmaceutical industry, for production of drug used in treatment of various gastrointestinal problems; cosmetics for production of talc; production of glossy paper for magazine and newspaper; paints production for gloss level control, and insecticides to control arthropods (Barker et al, 2007;Belloto et al, 1995). The active chemical component responsible for wastewater treatment in kaolin is aluminium silicate hydroxide (Al 2 Si 2 O 5 (OH) 4 ) popularly called kaolinite.…”