Toxicity effects of an insecticidal soap on the green peach aphid [Homoptera: Aphididae]

Tremblay, Éléonore; Bélanger, André; Brosseau, Marcel; Boivin, Guy

doi:10.7202/038985ar

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…:Aphididae) between 64.9%-84.8%. Similar results have been reported by others; Tremblay et al (2009) and Karagounis et al (2006) reported that insecticidal soap was effective on Myzus persicae (Sulzer) (Hem.:Aphididae). In contrast, reported that M. persicae could not be controlled in peach trees when insecticidal soap was applied only once.…”

Section: Discussionsupporting

confidence: 90%

Gül Üzerinde Metopolophium dirhodum (Walker) (Hemiptera: Aphididae)’un Kontrolunda Bazı Doğal Ürünlerin Etkileri

Helvacioğlu

Akşit²

2020

Adnan Menderes Üniversitesi Ziraat Fakültesi Dergisi

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Four products allowed in organic farming (kaolin, insecticidal soap, neem oil soap, spinosad) as alternatives to chemical insecticides, were evaluated for the control of Metopolophium dirhodum (Walker, 1849) (Hem.: Aphididae). In addition, number of the newborn nymph and host selection for the treated and untreated rose (Rosa hybrida L. cv. First Red) leaves were examined. The toxicities of used natural products were compared with the diazinon and control (water). Rose saplings were used as experimental material. The application was repeated twice in the same greenhouse. Evaluations in populations were done on 1, 3, 5, 7, 10 and 14 days after applications. Insecticidal soap showed toxicity between 50.45 % and 74.0 % until fifth day and its toxicity decreased in the following days. Neem oil soap was non-toxic (15.09%-19.71%) at first application but, in the second application, its toxicity was increased (36.96%-72.27%). Repeated kaolin application ended with a positive result of 66.87% control. Spinosad had no effect on aphid. It was observed that M. dirhodum population was decreased by repeated (twice) applications of kaolin, insecticidal soap and neem oil soap. However, they could not control the aphid populations completely. In choice tests, the numbers of living aphids and newborn nymphs on rose leaflets treated with kaolin, neem oil soap, and insecticide soap were lower than those not treated. These three products were found to be repellent for M. dirhodum.

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Section: Discussionsupporting

confidence: 90%

Gül Üzerinde Metopolophium dirhodum (Walker) (Hemiptera: Aphididae)’un Kontrolunda Bazı Doğal Ürünlerin Etkileri

Helvacioğlu

Akşit²

2020

Adnan Menderes Üniversitesi Ziraat Fakültesi Dergisi

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“…Among the low-toxic synthetics that we tested, potassium salt fatty acids, a type of insecticidal soap, is known for exhibiting dual functionality, serving as an insecticide and herbicide, effectively targeting soft-bodied insects and weeds when directly applied. However, soaps can be phytotoxic to certain crops and detrimental to beneficial insects [71,72]. Hence, it is essential to conduct further comprehensive experiments to confirm its efficacy under commercial environments.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Conventional and Biorational Insecticides against the Invasive Pest Thrips parvispinus (Thysanoptera: Thripidae) under Containment Conditions

Ataide,

Vargas,

Velazquez-Hernandez

et al. 2024

Insects

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In 2020, the invasive Thrips parvispinus (Karny) was first detected in Florida, United States. In response to the implemented regulatory restrictions, we conducted laboratory experiments under containment conditions. Thrips larvae and adults were exposed to 32 products (conventional and biorational insecticides) either directly or indirectly. Direct exposure was performed using a Spray Potter Tower, while indirect exposure was conducted by evaluating residue toxicity against the thrips. Water served as a control. We assessed mortality and leaf-feeding damage 48 h post-treatment. Among the conventional insecticides, chlorfenapyr, sulfoxaflor-spinetoram, and spinosad caused high mortality across all stages in both direct and residue toxicity assays. Pyridalyl, acetamiprid, tolfenpyrad, cyclaniliprole-flonicamid, acephate, novaluron, abamectin, cyantraniliprole, imidacloprid, cyclaniliprole, spirotetramat, and carbaryl displayed moderate toxicity, affecting at least two stages in either exposure route. Additionally, chlorfenapyr, spinosad, sulfoxaflor-spinetoram, pyridalyl, acetamiprid, cyclaniliprole, cyclaniliprole-flonicamid, abamectin, and acephate inhibited larvae and adult’s leaf-feeding damage in both direct and residue toxicity assays. Regarding biorational insecticides, mineral oil (3%) and sesame oil caused the highest mortality and lowest leaf-feeding damage. Greenhouse evaluations of spinosad, chlorfenapyr, sulfoxaflor-spinetoram, and pyridalyl are recommended. Also, a rotation program incorporating these products, while considering different modes of action, is advised for ornamental growers to avoid resistance and to comply with regulations.

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“…This finding confirms inter alia the effectiveness of anti-insect nets in controlling biotic pressure in the present experiment. The potassium salts of fatty acids are readily degraded via photochemical processes without leaving residues on the vegetation [ 42 , 43 ]; in contrast, they are selectively active on target pests by dissolving the waxes present in the insect cuticle causing their death by dehydration [ 44 , 45 ].…”

Section: Discussionmentioning

confidence: 99%

Improved Porosity of Insect Proof Screens Enhances Quality Aspects of Zucchini Squash without Compromising the Yield

Formisano

Pannico

El‐Nakhel

et al. 2020

Plants

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In a global climate change environment, assuring optimal growing conditions is a difficult challenge, compromising the food supply for a rapidly rising population. The climatic conditions in the protected environment lead to high temperatures and fast insect development, impacting productivity and vegetables qualitative attributes. Consumers’ interest in healthy food requires sustainable tools to manage biotic and abiotic factors and, from this perspective, anti-insect nets represent an excellent “green” solution. For this purpose, our goal was to compare two different anti-insect nets on microclimate, production, and qualitative traits of Cucurbita pepo L. fresh fruits. The experiment was conducted in three separate polyethylene high tunnels, with 50 mesh anti-insect nets of different porosities being installed on the openings of two tunnels, while the third tunnel was a control without nets. Microclimate measurements, as well as yield, physiological, and phytochemicals variables, were assessed. The 50 mesh net led to a decrease in marketable yield (22.5%), fruit number (18.0%), CO2 net assimilation rate (6.0%), and transpiration rate (29.5%). Total soluble solids, antioxidant activities and total ascorbic acid concentration had an opposite trend. The 50 mesh AirPlus net improved quality aspects of zucchini fruits by increasing total ascorbic acid, total phenols, and antioxidant compounds, with no negative impact on yield.

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Toxicity effects of an insecticidal soap on the green peach aphid [Homoptera: Aphididae]

Cited by 6 publications

References 12 publications

Gül Üzerinde Metopolophium dirhodum (Walker) (Hemiptera: Aphididae)’un Kontrolunda Bazı Doğal Ürünlerin Etkileri

Gül Üzerinde Metopolophium dirhodum (Walker) (Hemiptera: Aphididae)’un Kontrolunda Bazı Doğal Ürünlerin Etkileri

Efficacy of Conventional and Biorational Insecticides against the Invasive Pest Thrips parvispinus (Thysanoptera: Thripidae) under Containment Conditions

Improved Porosity of Insect Proof Screens Enhances Quality Aspects of Zucchini Squash without Compromising the Yield

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