Predatory mites double the economic injury level of Frankliniella occidentalis in strawberry

Sampson, Clare; Kirk, William D. J.

doi:10.1007/s10526-016-9747-y

Cited by 18 publications

(16 citation statements)

References 21 publications

(38 reference statements)

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“…The use of biological control in greenhouses is quite successful in practice but still has some challenges, particularly in the cultivation of strawberries requiring a relatively low-temperature regime compared to other greenhouse crops. This, together with the low amount of natural light in winter, hampers the establishment of the population and the development of most natural enemies (Sampson and Kirk, 2016 ; Clymans et al, 2017 ; Vervoort et al, 2017 ; Sampson, 2018 ). On the other hand, relatively high temperatures in summer allow for the rapid development of pest populations in the outdoor tabletops so that natural enemies cannot always keep up.…”

Section: Introductionmentioning

confidence: 99%

Elicitor Application in Strawberry Results in Long-Term Increase of Plant Resilience Without Yield Loss

et al. 2021

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For a first step integrating elicitor applications into the current IPM strategy increasing plant resilience against pests, we investigated repeated elicitor treatments in a strawberry everbearer nursery and cropping cycle under glass. During nursery methyl-jasmonate (MeJA), testing induction of defenses with plant bioassays was applied every 3 weeks. Thrips damage and reproduction by spider mites, whitefly and aphids were strongly reduced upon elicitor treatment. Subsequently, we applied MeJA every 3 weeks or based on scouting pests during a whole cropping cycle. Thrips leaf bioassays and LC-MS leaf metabolomics were applied to investigate the induction of defenses. Leaf damage by thrips was lower for both MeJA application schemes compared to the control except for the last weeks. While elicitor treatments after scouting also reduced damage, its effect did not last. Thrips damage decreased from vegetative to mature plants during the cropping cycle. At the end of the nursery phase, plants in the elicitor treatment were smaller. Surprisingly, growth during production was not affected by MeJA application, as were fruit yield and quality. LC-MS leaf metabolomics showed strong induction of vegetative plants decreasing during the maturation of plants toward the end of cultivation. Concurrently, no increase in the JA-inducible marker PPO was observed when measured toward the end of cultivation. Mostly flavonoid and phenolic glycosides known as plant defense compounds were induced upon MeJA application. While induced defense decreased with the maturation of plants, constitutive defense increased as measured in the leaf metabolome of control plants. Our data propose that young, relatively small plant stages lack constitutive defense necessitating an active JA defense response. As plants, mature constitutive defense metabolites seem to accumulate, providing a higher level of basal resistance. Our results have important implications for but are not limited to strawberry cultivation. We demonstrated that repeated elicitor application could be deployed as part of an integrated approach for sustainable crop protection by vertical integration with other management tactics and horizontal integration to control multiple pests concurrently. This approach forms a promising potential for long-term crop protection in greenhouses.

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Section: Introductionmentioning

confidence: 99%

Elicitor Application in Strawberry Results in Long-Term Increase of Plant Resilience Without Yield Loss

et al. 2021

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“…There is a strong correlation between numbers of thrips per flower and fruit damage [ 16 , 17 ]. Economic injury levels (EILs) vary, and can depend on thrips developmental stage, (larval or adult), the cultivar and whether predators are present in the crop [ 17 , 18 ]. EILs may be higher in polythene tunnels due to higher temperatures, where thrips have a higher survival rate [ 15 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Species Composition of Thrips (Thysanoptera: Thripidae) in Strawberry High Tunnels in Denmark

Nielsen

Sigsgaard

Kobro

et al. 2021

Insects

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Thrips are a major pest in protected strawberry production. Knowledge of thrips species composition could be instrumental for improved thrips management, but very little is known about which species are present in strawberries grown in high-tunnels in Denmark. Thrips (adults and larvae) were sampled in two strawberry tunnels of the cultivars Murano and Furore from May to August 2018, in the middle and in the edges of the tunnels. The most abundant thrips species found in the tunnels were Frankliniella intonsa and Thrips tabaci adults. Frankliniella intonsa were also the most frequently found species of the immatures sampled, followed by T. tabaci larvae, and other species. The number of thrips differed between the two cultivars, sampling times and location in the tunnel. Frankliniella intonsa was more abundant in the middle of the tunnels, while T. tabaci was more abundant in the edge of the tunnels adjacent to the field margins. The number of thrips peaked by the end of July. Both chemical and biological control should consider species composition and occurrence; hence, a fundamental first step for thrips management is to identify the species present on the target crop.

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“…For instance, to maintain a population under greenhouse conditions, phytoseiid mites must be released on crops several times (Garthwaite et al, 2016). Optimally timing the release is also important to ensure efficacious biological control (Sampson and Kirk, 2016). Moreover, higher release rates do not always provide better levels of biological control (Crowder, 2007).…”

Section: Introductionmentioning

confidence: 99%

Food and habitat supplementation promotes predatory mites and enhances pest control

et al. 2021

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Predatory mites double the economic injury level of Frankliniella occidentalis in strawberry

Cited by 18 publications

References 21 publications

Elicitor Application in Strawberry Results in Long-Term Increase of Plant Resilience Without Yield Loss

Elicitor Application in Strawberry Results in Long-Term Increase of Plant Resilience Without Yield Loss

Species Composition of Thrips (Thysanoptera: Thripidae) in Strawberry High Tunnels in Denmark

Food and habitat supplementation promotes predatory mites and enhances pest control

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