Flower strips, crop management and landscape composition effects on two aphid species and their natural enemies in faba bean

Serée, Lola; Chiron, François; Valantin‐Morison, Muriel; Barbottin, Aude; Gardarin, Antoine

doi:10.1016/j.agee.2022.107902

Cited by 14 publications

(9 citation statements)

References 77 publications

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“…This study investigated the effects of food resources (nectar and legumes supporting alternative hosts and prey, H1 and H2), plant functional dispersion (H3) and plant species richness (H4) within plant communities, which were manipulated experimentally, on the ability of the flower strips to support biological control of aphids infesting six different crops, over a crop rotation. Such effects were not systematically observed in previous studies (Balzan et al, 2016;Serée et al, 2022). Here, the percentage of plant cover providing resources to natural enemies (nectar and alternative hosts and prey) generally increased predator-prey ratios and aphid parasitism.…”

Section: Effect Of Distance Nectar Resources Legume Cover Plant Speci...contrasting

confidence: 67%

“…A greater percentage cover of plants providing available and accessible nectar to predators (Syrphidae) increased predator–prey ratios in oilseed rape (and a trend in the pea–barley intercrop), and it reduced aphid population growth rates in oilseed rape and barley. Nectar is known to increase syrphids longevity, reproduction and dispersal (van Rijn & Wäckers, 2016; Wäckers et al, 2005) as well as their abundance in field crops (Serée et al, 2022). In maize, there was no effect of nectar resources estimated for the main predators (Coccinellidae and Chrysopidae).…”

Section: Discussionmentioning

confidence: 99%

“…Nectar is known to increase syrphids longevity, reproduction and dispersal (van Rijn & Wäckers, 2016;Wäckers et al, 2005) as well as their abundance in field crops (Serée et al, 2022). In maize, there was no effect of nectar resources estimated for the main predators (Coccinellidae and Chrysopidae).…”

Section: Food Resources In Wildflower Strips Promote Aphid Natural En...mentioning

confidence: 92%

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Aphid biological control in arable crops via flower strips: The predominant role of food resources over diversity effects

Gardarin

2023

Journal of Applied Ecology

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Plant taxonomic and functional diversity promotes interactions at higher trophic levels, but the contribution of functional diversity effects to multitrophic interactions and ecosystem functioning remains unclear. In agroecosystems, flower strips can be sown to promote biodiversity and associated services, but their plant composition is poorly considered from a functional diversity perspective so as to promote multitrophic interactions. In a field experiment, aphid biological control was compared across contrasting flower strip mixtures, over a 4‐year arable crop rotation. The effects of plants providing food resources, that is nectar and legumes supporting alternative hosts and prey, and the effects of plant species richness and functional dispersion were investigated on the biological control of aphid populations. In general, increases in the percentage of plant cover providing nectar and alternative prey (Fabaceae) to natural enemies increased predator–prey ratios and aphid parasitism and decreased aphid population growth rates. These effects however depended on the crop species. Species richness and the functional dispersion of traits involved in plant–arthropod interactions were of lesser importance, and the directions of their effects were crop‐specific. Synthesis and applications. These findings provide useful insight for designing perennial plant mixtures for creating or restoring habitats supporting aphid regulation. It is not adequate to sow any mixture containing simply flowering plants. Plant mixtures should comprise a large proportion of plant species supporting alternative prey, like legumes, and species producing nectar being easily accessible to natural enemies (corollas with nondeep nectar). To be efficient over a crop rotation, with aphids being present at different seasons, these nectar resources should be provided throughout the year thanks to a diversity of plant flowering periods.

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Section: Effect Of Distance Nectar Resources Legume Cover Plant Speci...contrasting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Section: Food Resources In Wildflower Strips Promote Aphid Natural En...mentioning

confidence: 92%

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Aphid biological control in arable crops via flower strips: The predominant role of food resources over diversity effects

Gardarin

2023

Journal of Applied Ecology

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“…The presence of structurally complex plants, rich in species, with long blooming periods creates advantageous conditions for beneficial fauna and, consequently, enables the improvement of natural pest control both in annual and perennial crops [18]. Flower strips may constitute a preventive measure to control pests; e.g., in corn, potatoes, cabbage, cereals crops, field beans and even in orchards, as they can be applied together with other preventive or direct plant protection measures [11,12,[23][24][25].…”

Section: Natural Enemies Of Insect Pestsmentioning

confidence: 99%

Flower Strips and Their Ecological Multifunctionality in Agricultural Fields

2022

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Flower strips can be an important component of integrated pest management and contribute to reducing pressure on agroecosystems, which is why they are increasingly implemented as part of agri-environmental programs. They can be used as a multifunctional agronomic tool because they can prevent the decline of species diversity in the agroecosystem and increase functional biodiversity, which is a prerequisite for the provision of ecosystem services, such as pollination and natural pest control. Research highlights the great potential and multifunctionality of flower strips. This paper provides a synthesis of the most important information and research findings regarding flower strips and may be a useful tool in relation to the European Green Deal, which aims to move the EU towards a green transformation. Where intensive chemical treatments in agriculture have contributed to the degradation of the agricultural landscape, flower strips can support its ecological intensification.

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“…Simulations and empirical studies have shown that pest pressure decreases with increasing area of noncrop habitat, and more research is needed to nd the threshold of noncrop habitat acreage (Bianchi and van der Werf 2005). In a simple landscape where the noncrop habitat was less than 20%, the biodiversity and associated ecological processes were signi cantly strengthened by the introduction of local habitat, such as set-aside land (Tscharntke et al 2011), and the abundance of predatory enemies (Syrphidae) and aphid mummies increased with an increasing proportion of owering species (Seree et al 2022). Although some researchers argued that the set-aside habitat would promote pests and other harmful species (Firbank et al 2003;Shield and Bacon 1998), set-aside land was bene cial for biodiversity, especially spiders and birds, while attracting few or no pest species (Van Buskirk and Willi 2004).…”

Section: Discussionmentioning

confidence: 99%

Increasing the proportion of flower strips promotes natural enemies to enhance aphid biocontrol and wheat yields

Liang,

Ouyang,

Zhang

et al. 2023

Preprint

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Sowing flower strips adjacent to cropsis an effective practice for promoting natural enemies, enhancing biological pest control servicesand conserving biodiversity. However, few studies have considered the relationships of the proportion of flower strips with pest control servicesand crop yield. We conducted a three-year field experiment (including a control: 0% and three treatments: 5%, 10% and 15%) to determine the biocontrol service potential of sowing strips of Cnidium monnieri (L.) Cuss flowers adjacent to wheat and to reveal the relationships of the proportion of flower strips with pests, natural enemies, biological pest control services and wheat yield. Compared with the control (0%), flower strips promoted suppression of wheat aphid abundance by ladybugs and parasitoids. With an increasing proportion of flower strips, the predatory ladybug abundance and parasitism rates increased, while aphid abundance decreased. The relative biocontrol services index (RBSI) in the control (0%) was significantly lower than those in the treatments (5%, 10% and 15%). The wheat yield in the control (0%) was significantly lower than those in the treatments (5%, 10% and 15%). With an increasing proportion of flower strips, the RBSI and yield increased. In conclusion, sowing strips of C. monnieri flowers adjacent to wheat is a promising measure for providing considerable biocontrol services and increasing wheat yields. Specifically, natural enemies, biocontrol service potential and wheat yield were enhanced with an increasing proportion of flower strips. A 10% or 15% installment of flower strips is suggested to provide substantial biocontrol services and sustain wheat yields.

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Flower strips, crop management and landscape composition effects on two aphid species and their natural enemies in faba bean

Cited by 14 publications

References 77 publications

Aphid biological control in arable crops via flower strips: The predominant role of food resources over diversity effects

Aphid biological control in arable crops via flower strips: The predominant role of food resources over diversity effects

Flower Strips and Their Ecological Multifunctionality in Agricultural Fields

Increasing the proportion of flower strips promotes natural enemies to enhance aphid biocontrol and wheat yields

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