Evaluation of Two Agriculture Detergents as Control Alternatives for Green Peach Aphid and Twospotted Spidermite, Two Pests Affecting Peach Orchards in Chile

Evaluation of Insecticide Activity of Two Agricultural Detergents against the Long-Tailed Mealybug, Pseudococcus longispinus (Hemiptera: Pseudococcidae), in the Laboratory

“…The results of this study indicated that, for a given detergent, the use of greater volumes of solution and/or concentrations produces higher mortality, which coincides with several studies on the effect of detergents on diverse pests (Ripa et al, 2006;Curkovic et al, 2006). When using low volumes and/or concentrations, some individuals survived, but had signs of wax removed, giving them a brownish appearance.…”

“…At high concentrations, mealybugs were immobilized after the spraying, adhering to the leaf surface by the waxes removed from their bodies by the detergent, which had accumulated under them. Both detergents affected juveniles of pseudococcids at concentrations smaller than for adults, as has been observed with other hemipterans (Prado et al, 2003;Curkovic et al, 2006). This is probably related to the smaller size of nymphs and their having less amount surface waxes, which makes them more susceptible than adults to dehydration.…”

“…Previous research (Curkovic and Araya, 2004) presented significant differences between Quix (a product similar to SU 120) and Nobla, other household detergents. Recently, Curkovic et al (2006) compared the insecticide/ acaricide activity of both detergents (SU 120 and Tecsa Fruta) against Myzus persicae (Sulzer) (Hemiptera: Aphididae) and Tetranychus urticae Koch (Acarina: Tetranychidae), and concluded that SU 120 also had a higher pesticide action on both species. As well, the greater content of active ingredients in the formulation of Tecsa Fruta (31%), compared with a maximum 17.8% in SU 120, suggests that the activity of different detergents depends both on the active ingredients and their corresponding concentrations.…”

Detergents and Soaps as Tools for IPM in Agriculture

“…In pests known as susceptible to D + S, however, some specific instars are less (or not) vulnerable (e.g., spider mite eggs are less susceptible than mobile forms). In fact, in one report only slight activity against overwintering eggs of the European red mite P. ulmi (Koch) was found [67], while significantly greater summer eggs LC 50 (1.5-2.3×) than adult females of the two-spotted spider mite, Tetranychus urticae Koch (both Acari: Tetranychidae), were observed in another study [68]. In the case of whiteflies, eggs and pupae are less susceptible, whereas nymphs or adults are severely affected by detergent sprays [27].…”

“…trees in Chile, with a lesser effect onto the predatory mite Neoseiulus californicus (McGregor) (Phytoseiidae) (N. californicus had a good population recovery after the spray) in comparison with the standard treatment having residual effect (Pyridaben) [66]. In another study, the detergents SU 120 and Tecsa fruta were evaluated on mortality of T. urticae eggs and adult females, set on double-sided tapes placed on a slide immersed in detergent solutions in the laboratory [68]. The former product was significantly more active killing mites (smaller LC 50 ) for both instars.…”