Vermicomposts of Different Origins Protect Tomato Plants Against the Sweetpotato Whitefly

Sedaghatbaf, Roshanak; Samih, Mohammad Amin; Zohdi, Hadi; Zarabi, Mehdi

doi:10.1093/jee/tox238

Cited by 10 publications

(4 citation statements)

References 26 publications

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“…26,52 Indeed, carefully targeted insecticide sprays that minimize harm to natural enemies are a particularly effective way to avoid whitefly outbreaks. 25,26 Plant defenses against whiteflies are also important, 28,30 as shown, for example, when different fertilizers render plants more or less susceptible to whitefly attack (e.g., 53 ). It is possible that heat stress would likewise render plants more susceptible to whitefly feeding at hotter sites (e.g., 27 ).…”

Section: Discussionmentioning

confidence: 99%

Warmer temperatures trigger insecticide‐associated pest outbreaks

Crossley,

Smith,

Barman

et al. 2023

Pest Management Science

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BACKGROUNDRising global temperatures are associated with emerging insect pests, reflecting earlier and longer insect activity, faster development, more generations per year and changing species' ranges. Insecticides are often the first tools available to manage these new threats. In the southeastern US, sweet potato whitefly (Bemisia tabaci) has recently become the major threat to vegetable production. We used data from a multi‐year, regional whitefly monitoring network to search for climate, land use, and management correlates of whitefly activity.RESULTSStrikingly, whiteflies were detected earlier and grew more abundant in landscapes with greater insecticide use, but only when temperatures were also relatively warm. Whitefly outbreaks in hotter conditions were not associated with specific active ingredients used to suppress whiteflies, which would be consistent with a regional disruption of biocontrol following sprays for other pests. In addition, peak whitefly detections occurred earlier in areas with more vegetable production, but later with more cotton production, consistent with whiteflies moving among crops.CONCLUSIONAltogether, our findings suggest possible links between warmer temperatures, more abundant pests, and frequent insecticide applications disrupting biological control, though this remains to be explicitly demonstrated. Climate‐initiated pesticide treadmills of this type may become an increasingly common driver of emerging pest outbreaks as global change accelerates. © 2023 Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 99%

Warmer temperatures trigger insecticide‐associated pest outbreaks

Crossley,

Smith,

Barman

et al. 2023

Pest Management Science

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“…Vermicompost containing humic acids have been used extensively in small-scale agriculture. Soil amendment with vermicompost makes plants not only more vigorous, but also resistant to insect pests (Cardoza, 2011;Cardoza and Buhler, 2012;Sedaghatbaf et al, 2018). Despite the early evidence of vermicompost in enhancing plant resistance, just recently the role of HA has been investigated.…”

Section: Humic Substances and Humic Acidsmentioning

confidence: 99%

The Effects of Biostimulants on Induced Plant Defense

et al. 2021

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The search for innovative and alternative methods for chemical control to manage pests is an increasingly growing reality. The use of biostimulants such as plant growth promoting rhizobacteria (PGPR) and humic acids (HA) has been shown to improve many agronomic characteristics of plants while increasing yield. These biostimulants also alter the production of secondary metabolites with consequences for insect herbivores. Here we review the role of biostimulants such as PGPR and HA in promoting and eliciting plant defenses. The cascading effects of using these biostimulants on insect herbivores and their natural enemies are discussed in this context. Synergism between biostimulants are also discussed. The potential role of these products in augmenting agricultural productivity is highlighted as is further need for additional research. This review highlights the potential of this tool to enhance integrated pest management in agricultural production systems, reduce the use of pesticides, and increase the efficiency of fertilization while supporting healthier more pest-resistant plants.

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“…For example, potting media amended with vermicompost suppressed population of the two-spotted spider mite Tetranychus urticae , mealy bug Pseudococcus sp ., and green peach aphid Myzus persicae [ 5 ]. The development and fecundity of melon aphid Aphis gossypii [ 6 ] and the whitefly Bemisia tabaci [ 7 ] were impaired by vermicompost treatments.…”

Section: Introductionmentioning

confidence: 99%

Vermicompost Amendments Disrupt Feeding Behavior of Diaphorina citri Kuwayama and Boost Activities of Salicylic Acid and Jasmonic Acid Pathway-Related Enzymes in Citrus

Tao

Wang

Mao

et al. 2023

Insects

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Plants grown with vermicompost amendments are known to be harmful to sap-sucking insects, but the underlying mechanism remains to be determined. Here we investigated the feeding behavior of Diaphorina citri Kuwayama on Citrus limon (L.) Burm. F using the electrical penetration graph technique. Plants were grown in soil with different vermicompost rates (0%, 20%, 40%, and 60% w/w). Additionally, plants were tested for the activity of salicylic acid (SA) and jasmonic acid (JA) pathway-related enzymes. When compared to the control, vermicompost treatments (40% and 60%) decreased duration of phloem sap feeding and increased duration of the pathway phase of D. citri, and the 60% vermicompost made it more difficult for D. citri to reach and gain access to phloem sap. Enzymatic assays indicated that the 40% amendment rate increased phenylalanine ammonia lyase (involved in the SA pathway) and polyphenol oxidase (involved in the JA pathway), while the 60% amendment rate increased -1,3-glucanases (involved in the SA pathway) and lipoxygenase (involved in the JA pathway). The 20% amendment rate had no effect on feeding or enzyme activities. This study revealed that vermicompost amendments can reduce the efficiency of D. citri feeding, which may result from increased plant resistance via the SA and JA pathway.

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Vermicomposts of Different Origins Protect Tomato Plants Against the Sweetpotato Whitefly

Cited by 10 publications

References 26 publications

Warmer temperatures trigger insecticide‐associated pest outbreaks

Warmer temperatures trigger insecticide‐associated pest outbreaks

The Effects of Biostimulants on Induced Plant Defense

Vermicompost Amendments Disrupt Feeding Behavior of Diaphorina citri Kuwayama and Boost Activities of Salicylic Acid and Jasmonic Acid Pathway-Related Enzymes in Citrus

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