Simplified modelling enhances biocontrol decision making in tomato greenhouses for three important pest species

Moerkens, Rob; Janssen, Dirk; Brenard, Nathalie; Reybroeck, Eva; Tellez, María del Mar; Rodrı́guez, Estefanı́a; Bosmans, Lien; Leirs, Herwig; Sluydts, Vincent

doi:10.1007/s10340-020-01256-0

Cited by 10 publications

(15 citation statements)

References 44 publications

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“…However, their phytophagy can cause significant damage to tomatoes grown in heated greenhouses when pest populations are low [ 25 , 44 ]. Consequently, N. tenuis is considered a pest of heated greenhouse tomatoes in Northern Europe [ 45 ]. Nesidiocoris tenuis can also cause damage in open-field sesame and tobacco crops and is considered a pest [ 46 , 47 ].…”

Section: Discussionmentioning

confidence: 99%

Sesame as an Alternative Host Plant to Establish and Retain Predatory Mirids in Open-Field Tomatoes

Castillo

Roda

Qureshi

et al. 2022

Plants

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The silverleaf whitefly (Bemisia tabaci) and the South America tomato pinworm (Tuta absoluta) are two of the most destructive pests of tomato. Open-field tomato production frequently relies on chemical treatments, which has been shown to lead to pesticide resistance. The integration of biological control using predatory mirid bugs is an effective alternative method for managing these pests. However, methods to establish and maintain populations of zoophytophagous mirids are not adequately described. We explored the potential use of two mirids naturally occurring in Florida, Nesidiocoris tenuis and Macrolophus praeclarus. We conducted 6 field experiments over 4 consecutive years to develop a strategy to maintain the mirids. Pre-plant inoculation of tomato plants did not lead to their establishment, likely due to the low prevalence of prey. We explored the use of sesame (Sesamum indicum) to retain the mirids. Intercropping sesame maintained the populations of N. tenuis throughout the duration of the crop. Macrolophus praeclarus never established in any of the open-field experiments. Nesidiocoris tenuis damage was minimal (<1 necrotic ring/plant) and mirid damage was reduced in the presence of sesame. Our results show that intercropping sesame may provide a means to utilize mirids to manage B. tabaci, an established pest, and provide options to tomato growers should T. absoluta invade USA.

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Section: Discussionmentioning

confidence: 99%

Sesame as an Alternative Host Plant to Establish and Retain Predatory Mirids in Open-Field Tomatoes

Castillo

Roda

Qureshi

et al. 2022

Plants

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“…From the traps, the grower monitors both the pest and a predatory bug M. pygmaeus and can conclude from their relative counts whether biocontrol by the predator is going well or not (Böckmann and Meyhöfer, 2017;Moerkens et al, 2020). Based on trap catches of the parasitoid Encarsia formosa, she can also conclude whether parasitism is going on well: six or more individuals per trap indicates the parasitoid is keeping the pest in control (Böckmann et al, 2014).…”

Section: Sampling Monitoring and Identifying Of Whitefliesmentioning

confidence: 99%

“…Giessen et al (1995) explored the effects of antibiotic resistance of tomato plants on whitefly population development with a deterministic model. Moerkens et al (2020) used simple statistical modelling based on whitefly and Macrolophus counts in YSTs to predict the success level of biocontrol. With the development of wireless sensors or moving robotic AI-platforms that measure microclimate on the go and accumulate data on pest densities at the same time, the predictive use of forecasting models is being integrated into whitefly management in decision support systems.…”

Section: Simulation Of Whitefly Population Dynamicsmentioning

confidence: 99%

Advances in insect pest and disease monitoring and forecasting in horticulture

Vänninen¹

2022

Burleigh Dodds Series in Agricultural Science

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Pest monitoring in horticulture is developing technologically to reduce time and labor needed for sampling and to produce more accurate pest predictions. New ways of detecting pests based on selective e-traps, e-noses, cameras and acoustic signatures are already in use or emerging. Remote sensing of pests requires the development of new economic injury levels and economic thresholds (ET). The relative importance of mechanistic and statistical models is changing due to AI-technologies and Big Data. The use of Big Data will force researchers to collect, use and value data differently than before. The incorporation of natural enemies in ETs will take place gradually and require researchers to acquire modeling skills. Research for advancing monitoring and forecasting also must include the socioeconomic factors that determine whether new technologies will be implemented by farmers. Developing trustworthy sampling plans and forecasting models,, and validating and implementing them in collaboration with stakeholders, remains important.

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“…There are two factors, the economic threshold level (ETL) and the ratio of natural enemies to prey, that determine the threshold. The prey/predator ratio has been employed successfully to decide the releasing frequency and quantity of predators with various pests, particularly in microcosm ecosystems [ 23 , 24 , 25 , 26 , 27 ], but it has been used less in open fields [ 28 ] due to the complex interactions between prey and predator under the influence of multiple factors in nature. It is necessary to compromise between pesticide use patterns and the biocontrol service of natural enemies when the pest density is near to the ETL, and we need to build some useful parameters such as the ratio of prey/predator to solve this issue.…”

Section: Introductionmentioning

confidence: 99%

When Does the Prey/Predator Ratio Work for the Effective Biocontrol of Cotton Aphid on Cotton Seedlings?

Zhang

Yao

Wendi

et al. 2022

Insects

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The decision to delay or cancel spraying insecticides against pest aphids is dependent on the ratio of prey/predator, which reflects how well the predator can suppress the aphid population increase in the field. It is challenging to estimate the ratio of prey/predator due to the multiple factors involved in the interaction between prey and predator. Cotton aphid (Aphis gossypii Glover.) is a serious pest, widely distributed in cotton-growing areas around the world. We combined different ratios of aphids with aphid oligophagous ladybird beetles (Coccinella septempunctata Linnaeus) under laboratory and garden conditions to investigate the critical threshold for prey/predator which effectively reduced the cotton aphid population increase. Two kinds of modeling were developed to understand the relationships between the ratio of prey/predator and the PGR (population growth rate), and with the effectiveness of biocontrol (EBC). We found the critical values of PGR should be less than −0.0806 (predators artificially released after 5 days) and then less than −0.075 (predators released after 10 days) if EBC is less than 50%. We recommend that the ratio of prey/predator should be less than 450 for the effective biocontrol of cotton aphids at the cotton seedling stage. These values can be reference indices for the management of aphids in mid-summer.

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Simplified modelling enhances biocontrol decision making in tomato greenhouses for three important pest species

Cited by 10 publications

References 44 publications

Sesame as an Alternative Host Plant to Establish and Retain Predatory Mirids in Open-Field Tomatoes

Sesame as an Alternative Host Plant to Establish and Retain Predatory Mirids in Open-Field Tomatoes

Advances in insect pest and disease monitoring and forecasting in horticulture

When Does the Prey/Predator Ratio Work for the Effective Biocontrol of Cotton Aphid on Cotton Seedlings?

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