A novel method for protecting slow-release sachets of predatory mites against environmental stresses and increasing predator release to crops

Shimoda, Takeshi; Kagawa, Yoshitake; Mori, Kotaro; Hinomoto, Norihide; Hiraoka, Tadashi; Nakajima, Tetsuo

doi:10.1007/s10526-017-9800-5

Cited by 19 publications

(7 citation statements)

References 25 publications

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“…Pesticide-free refuges can also be created by bagging the branches of insecticide-treated trees during spraying. Similar refuges have been established using slow-release sachets of phytoseiids protected by plant-attached shelters [57]. Reduction in routes of exposure can promote the compatibility between pesticides and phytoseiids.…”

Section: Ecological Selectivity and Management Practices That Enhance Compatibilitymentioning

confidence: 92%

Improving the compatibility of pesticides and predatory mites: recent findings on physiological and ecological selectivity

Duso

Leeuwen

Pozzebon

2020

Current Opinion in Insect Science

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Highlights New approaches have been proposed in the evaluation of pesticide selectivity towards natural enemies, in particular predatory mites. Predatory mites (i.e. phytoseiids) can become resistant to pesticides by mainly detoxification but also target-site mutations. Some recently developed acaricides show natural differential affinity for the target-site between spider mites and phytoseiids. Pesticide-free refuges and pesticide-treated nets increase the compatibility of pesticides with phytoseiids. Providing alternative foods can reduce the impact of pesticides on phytoseiids.

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Section: Ecological Selectivity and Management Practices That Enhance Compatibilitymentioning

confidence: 92%

Improving the compatibility of pesticides and predatory mites: recent findings on physiological and ecological selectivity

Duso

Leeuwen

Pozzebon

2020

Current Opinion in Insect Science

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“…The occasional decline in the performance of Amblyseius cucumeris could be due to suboptimal temperature and humidity in the greenhouse on which the success of predation depends, and also due to the mode of its release in the crop. The environmental stresses can adversely affect the performance of slowrelease sachets of predatory mites (Shimoda et al, 2017). The emergence patterns of Amblyseius cucumeris from the sachets in the greenhouse could be highly variable even under ideal climatic conditions (Buitenhuis and Brommit, 2014).…”

Section: Resultsmentioning

confidence: 99%

Biocontrol in practice in Canadian floricultural greenhouses

Singh

Nykolyshyn

2021

Ornam. Hortic.

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The environment inside Canadian prairie greenhouses differs from greenhouses built in other northern latitude locations in terms of lighting, temperature, humidity, and photoperiod. Since the performance of biocontrol agents depends upon several interactive environmental variables, their effectiveness to control pests in a particular crop growing under certain climatic conditions does not directly translate to another crop or location. So, we analyzed research trials assessing the efficacy and compatibility of various biocontrol agents (Amblyseius cucumeris, Amblyseius cucumeris, Phytoseiulus persimilis, Encarsia formosa, Aphidius colemani, Aphidius ervi, and Steinernema feltiae) on key pests (Western flower thrips, two-spotted spider mites, greenhouse whiteflies, and aphids) of spring bedding plants grown in a commercial floricultural greenhouse. Were analyzed several compatible combinations of biocontrol agents and observed a significant reduction in pest densities and plant damage symptoms as compared to untreated control plants. The results demonstrate that P. persimilis controlled two-spotted spider mites successfully in calibrachoa crop. The combination of Amblyseius cucumeris and S. feltiae resulted in significantly better control of Western flower thrips than the use of Amblyseius cucumeris alone in sweet potato vine plants. The application of E. formosa and Amblyseius cucumeris individually reduced greenhouse whiteflies on calibrachoa plants as compared to control, but their combination performed better resulting in a significantly lower number of whiteflies on plants. Another combination of Aphidius colemani and Aphidius ervi controlled green peach aphids and foxglove aphids effectively on the pansy crop. The biocontrol agents were effective for managing a variety of pests in a commercial greenhouse setting.

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“…However, more detailed study of microclimate may be necessary because of the lack of untreated controls in this trial. Future studies should evaluate microclimate parameters at predator release sites as these are known to affect predator survival (Buitenhuis et al, 2014;Shimoda et al, 2017) and dispersal ability of pests in and out of the shade houses.…”

Section: Discussionmentioning

confidence: 99%

“…Sachets applied to containerized plants in outdoor production may come into contact with pesticides or water through overhead irrigation systems or rain events. Shimoda et al (2017) found that the number of predators in unsheltered sachets was drastically decreased after spraying with a nonselective pesticide or water, simulating rain, or overhead irrigation. To address these concerns, they developed a waterproof shelter for the sachets to decrease their exposure.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to the aforementioned concerns, there are also questions about the variability of production methods for certain plants, particularly those that might be grown in shade and sun. As microclimate could potentially alter the efficacy of both the sachets (Shimoda et al, 2017) and predators (Hewitt et al, 2015;Lee and Gillespie, 2011), it is important to know if this particularly release method will provide similar results under both conditions.…”

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confidence: 99%

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Swirski Mite Controlled-release Sachets as a Pest Management Tool in Container Tree Production

Addesso

Witcher

Fare

2018

hortte

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Adoption of biological control tools in woody ornamental nursery production has lagged behind other agriculture fields. One of the major obstacles to adoption is lack of information on the efficacy of various biological control agents in nursery production systems. The predatory mite Amblyseius swirskii, sold commercially as “swirski mite,” is a generalist predatory mite that has recently been adopted as a generalist control for a wide range of mite and insect pests, including thrips (Thripidae), whiteflies (Aleyrodidae), eriophyid mites (Eriophyidae), broad mite (Polyphagotarsonemus latus), and spider mites (Tetranychidae). A controlled-release sachet formulation of swirski mite was evaluated in three experiments to determine whether size of the tree, timing of first application, or sun intensity would affect treatment efficacy. Pest numbers on plants was evaluated biweekly for 12 weeks. The swirski mite sachets controlled broad mite and spider mite outbreaks on red maple trees (Acer rubrum) grown in nos. 3 and 15 nursery containers, respectively. Application at the time of red maple rooted cutting transplant was not necessary to achieve summer-long control of pests. No outbreaks of target pests on flowering dogwood (Cornus florida) in no. 5 containers grown under both full sun and shade, but with low levels of broad mite persisting in the shade treatment and thrips persisting in sun. These results suggest that swirski mite is a promising candidate for biological control in woody ornamental nursery production.

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A novel method for protecting slow-release sachets of predatory mites against environmental stresses and increasing predator release to crops

Cited by 19 publications

References 25 publications

Improving the compatibility of pesticides and predatory mites: recent findings on physiological and ecological selectivity

Improving the compatibility of pesticides and predatory mites: recent findings on physiological and ecological selectivity

Biocontrol in practice in Canadian floricultural greenhouses

Swirski Mite Controlled-release Sachets as a Pest Management Tool in Container Tree Production

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