A new mite IPM strategy: predator avoidance behaviour resulting from the synergetic effects of predator release and acaricide‐treated nets

Kungu, Miriam; Déletré, Emilie; Subramanian, Sevgan; Fiaboe, Komi K.M.; Gitonga, Lucy; Lagat, Zipporah O.; Martin, Thibaud

doi:10.1002/ps.5203

Cited by 9 publications

(4 citation statements)

References 46 publications

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“…The application of chemical insecticide sprays could rapidly suppress insect pest population density. Chemical insecticides and other methods (e.g., microbial control agents, attractants, and classical biological control agents) have additive or synergistic effects on insect pests [24][25][26][27][28][29][30][31] and can be conducive to reducing insecticide use and costs [32,33]. However, no additive or synergistic effects on TRW populations and tree health, and the survival between TTN and insecticides, were found in this study.…”

Section: Discussioncontrasting

confidence: 60%

Efficacy of Trunk Trap Nets and Insecticides Applied Alone and in Combination for Control of Tree-of-heaven Root Weevil Eucryptorrhynchus scrobiculatus in Ailanthus altissima Plantations

Yang¹,

Wen²

2019

Forests

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In Northern China, the tree-of-heaven root weevil (TRW), Eucryptorrhynchus scrobiculatus (Motschulsky) (Coleoptera: Curculionidae), is a serious borer pest of Ailanthus altissima (Mill.) Swingle (Sapindales: Simaroubaceae) (tree-of-heaven) is an important tree species for landscapes and afforestation. This study evaluates the efficacy of trunk trap nets (TTN), thiacloprid spray (TS), and cypermethrin spray (CS) alone, and in combination with TTN and thiacloprid or cypermethrin spray (TTNTS or TTNCS) for controlling TRW in A. altissima plantations in 2016–2018 in three sites (Haojiaqiao, Wutongshu, and Taojiajuan), which are located near Lingwu city in Ningxia, China. TTN, TTNTS, and TTNCS treatments significantly reduce marked TRW captures (more than 93% with respect to the untreated trees) and wild TRW captures in population monitoring trunk trap nets (MTTN) deployed in stands (more than 55% with respect to the untreated trees). Further field trials demonstrate that these TTN, TTNTS, and TTNCS treatments significantly reduce damage to A. altissima in stands; there are no significant differences between TTN and combination treatments. In addition, significantly more TRW are captured in MTTN within Taojiajuan than within Haojiaqiao or Wutongshu in field trials 2018. There were no significant differences between sites in 2016 and 2017. This study indicates that the TS and CS treatments used had very little to no impact on TRW populations and tree health in the timeframe examined. TTN alone are clearly effective for suppressing populations of TRW and stabilizing A. altissima tree health. This physical control technique, using TTN, could be sufficient to manage TRW on tree-of-heaven with no insecticide.

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Section: Discussioncontrasting

confidence: 60%

Efficacy of Trunk Trap Nets and Insecticides Applied Alone and in Combination for Control of Tree-of-heaven Root Weevil Eucryptorrhynchus scrobiculatus in Ailanthus altissima Plantations

Yang¹,

Wen²

2019

Forests

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“…A few agroecological studies provided suggestions of the optimal conditions for successful biocontrol implementation, yet these were not always empirically tested. For example, the augmentative release of predators or parasitoids was found to be more effective when combined with other practices, such as netting (Kungu et al, 2019), manure and mineral fertilizers (Mutisya et al, 2015), and reduced use of synthetic pesticides (Kahuthia-Gathu et al, 2017). Climatic conditions, such as humidity and UV levels, were highlighted as critical for parasitoid establishment (Kabore et al, 2017;Agboyi et al, 2020) suggesting that this intervention may not be possible in some agro-climatic regions.…”

Section: Interdisciplinary Evidencementioning

confidence: 99%

Biological control interventions and botanical pesticides for insect pests of crops in sub-Saharan Africa: A mapping review

Ratto

Bruce

Chipabika

et al. 2022

Front. Sustain. Food Syst.

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Agricultural productivity can be increased sustainably in sub-Saharan Africa (SSA) by reducing crop losses due to insect pest damage. As an alternative to environmentally-damaging chemical pesticides, biological control interventions and botanical pesticides show potential to achieve both high yields and profits. However, synthesized information of their performance and understanding of their adoption among smallholder farmers is limited. Here, 173 studies of biological control interventions and botanical pesticides of insect pests for 35 crops from 20 sub-Saharan countries from 2005 to 2021 were systematically reviewed. Drawing on published datasets, we found that cereals, particularly maize, were the most studied crop (59%). Research on botanical pesticides constituted 32% of the studies, followed by augmentation/introduction biocontrol (29%), and push-pull (21%). Studies evaluating the technical performance of biocontrol interventions dominated (73%), with a regional clustering of push-pull studies in Kenya. Few studies investigated each intervention on each crop type, across different farming contexts and scales, highlighting an urgent need for landscape-scale studies to elucidate land-use impacts on biocontrol effectiveness. Limited evidence also exists on the synergistic effects of biocontrol on multiple ecosystem services and on non-target/beneficial organisms. We found an absence of interdisciplinary studies that addressed the wider indirect benefits of not using chemical pesticides, the social-economic outcomes, and barriers to adoption by farmers, which we argue are necessary to identify pathways to greater adoption and to support policy advocacy of biocontrol interventions in SSA.

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“…In order to optimize pest management methods or tools, it is necessary to study the escape behavior of these insects. Kungu et al . showed that the predator escape behavior of the prey of spider mites results in higher prey trapping and killing rates on the acaricide‐treated nets.…”

Section: Discussionmentioning

confidence: 99%

“…27 In order to optimize pest management methods or tools, it is necessary to study the escape behavior of these insects. Kungu et al 31 showed that the predator escape behavior of the prey of spider mites results in higher prey trapping and killing rates on the acaricide-treated nets. Although E. scrobiculatus and E. brandti are sympatric and affect the same plant species, both of these weevils chose different escape strategies when they encountered the TTN in the process of climbing up.…”

Section: Discussionmentioning

confidence: 99%

A novel adhesive trunk trap net for trapping Eucryptorrhynchus brandti (Coleoptera: Curculionidae)

Yang

Wen

Guo

et al. 2019

Pest Management Science

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BACKGROUND Eucryptorrhynchus brandti (Harold) is a destructive wood‐boring pest of tree of heaven, Ailanthus altissima, in China. At present, the management of E. brandti relies exclusively on frequent applications of synthetic insecticides. Environmentally friendly alternatives to the use of synthetic insecticides would be beneficial. A trunk trap net (TTN), an adhesive trap (AT), and an adhesive trunk trap net (ATTN) were evaluated in their ability to capture E. brandti. RESULTS Significantly greater laboratory weevil recapture rates were found using the ATTN (78%) than using the TTN (8%) and AT (0%). In total, 45% of marked weevils were captured by the ATTN, an eight‐fold increase in catch rates using the TTN in mark‐release‐recapture field trials in 2017. No marked weevils were captured by the AT. Field trials in 2017 and 2018 showed that the ATTN captured six to seven times more wild weevils than using the TTN. CONCLUSION Adhesive Trunk Trap nets (ATTNs) were more effective in capturing E. brandti adults than Trunk Trap nets (TTNs). These results support the use of the ATTN as an eco‐friendly tool for the integrated management of E. brandti. © 2019 Society of Chemical Industry

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A new mite IPM strategy: predator avoidance behaviour resulting from the synergetic effects of predator release and acaricide‐treated nets

Abstract: These techniques are profitable for smallholders as they are not expensive and avoid residues on the crop. © 2018 Society of Chemical Industry.

Cited by 9 publications

References 46 publications

Efficacy of Trunk Trap Nets and Insecticides Applied Alone and in Combination for Control of Tree-of-heaven Root Weevil Eucryptorrhynchus scrobiculatus in Ailanthus altissima Plantations

Efficacy of Trunk Trap Nets and Insecticides Applied Alone and in Combination for Control of Tree-of-heaven Root Weevil Eucryptorrhynchus scrobiculatus in Ailanthus altissima Plantations

Biological control interventions and botanical pesticides for insect pests of crops in sub-Saharan Africa: A mapping review

A novel adhesive trunk trap net for trapping Eucryptorrhynchus brandti (Coleoptera: Curculionidae)

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