Contrasting effects of past and present mass-flowering crop cultivation on bee pollinators shaping yield components in oilseed rape

Beyer, Nicole; Gabriel, Doreen; Westphal, Catrin

doi:10.1016/j.agee.2021.107537

Cited by 13 publications

(4 citation statements)

References 66 publications

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“…Further, it is assumed that higher trophic levels of specialists such as predators and parasitoids are more sensitive to changes compared to those of lower trophic levels and that populations can be affected at different spatial scales. 25 Recent studies have demonstrated effects of changes in OSR cultivation on herbivore, parasitoid and pollinator communities in OSR, 17,[26][27][28][29][30][31][32] however, these focus mainly on spring pests. Oilseed rape is by far the most important host plant for P. chrysocephala 9 and also important for D. radicum in areas without cabbage production.…”

Section: Introductionmentioning

confidence: 99%

Effects of regional crop rotations on autumn insect pests in winter oilseed rape

Hausmann

Heimbach

Gabriel

et al. 2023

Pest Management Science

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BackgroundChemical control of insect pests in oilseed rape (OSR) is becoming increasingly difficult due to the development of resistance and restrictive insecticide approvals in Europe. At the same time, there is a lack of preventive and alternative control measures. Crop rotation mostly fails to control insects due to their mobility; however, changing regional cropping densities can dilute or concentrate pest pressure. In this study, we investigated whether the local occurrence of Psylliodes chrysocephala and Delia radicum, serious insect pests in winter OSR, is influenced by distance from the previous year's OSR fields and how changes in OSR rape cropping density at a regional scale (up to 10 km radius) affect pest pressure.ResultsAbundance of P. chrysocephala in yellow water traps decreased with increasing distance to previous year's OSR. Estimated catches in the first three weeks of migration were about 68–76% lower at 10 km distance compared to 1 km in autumn 2019 and 2020. However, in both seasons P. chrysocephala was able to disperse over distances of 10 km. Probability of root damage by D. radicum was affected by changes of OSR cropping area at a spatial scale of 2.5 km radius; it increased if acreage of OSR decreased. Furthermore, aphid infestation was lower when OSR was distant in the previous year.ConclusionThis study could enable field‐specific risk assessment and prediction of pest pressure. To decide about the effectiveness of cropping breaks at a regional level as a preventive crop protection measure, more knowledge on other pest species and antagonists is needed.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

Effects of regional crop rotations on autumn insect pests in winter oilseed rape

Hausmann

Heimbach

Gabriel

et al. 2023

Pest Management Science

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“…These environmental variations in floral resource quality can have positive or negative consequences on pollinator fitness and crop pollination [ 47 , 50 , 51 ] indicating that management strategies which support favourable floral nutritional profiles for crop pollinators may be possible, for example, by using fungal inoculants or altering fertilizer regimes. Field and landscape level crop and non-crop floral diversity and abundance shape the nutritional landscape for pollinators and these resources fluctuate over seasonal and annual cycles [ 52 ], highlighting the need for long-term monitoring in crop pollinator studies.…”

Section: Crops As Floral Food Resourcesmentioning

confidence: 99%

Pollinator nutrition and its role in merging the dual objectives of pollinator health and optimal crop production

Jones

Rader

2022

Phil. Trans. R. Soc. B

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Bee and non-bee insect pollinators play an integral role in the quantity and quality of production for many food crops, yet there is growing evidence that nutritional challenges to pollinators in agricultural landscapes are an important factor in the reduction of pollinator populations worldwide. Schemes to enhance crop pollinator health have historically focused on floral resource plantings aimed at increasing pollinator abundance and diversity by providing more foraging opportunities for bees. These efforts have demonstrated that improvements in bee diversity and abundance are achievable; however, goals of increasing crop pollination outcomes via these interventions are not consistently met. To support pollinator health and crop pollination outcomes in tandem, habitat enhancements must be tailored to meet the life-history needs of specific crop pollinators, including non-bees. This will require greater understanding of the nutritional demands of these taxa together with the supply of floral and non-floral food resources and how these interact in cropping environments. Understanding the mechanisms underlying crop pollination and pollinator health in unison across a range of taxa is clearly a win–win for industry and conservation, yet achievement of these goals will require new knowledge and novel, targeted methods. This article is part of the theme issue ‘Natural processes influencing pollinator health: from chemistry to landscapes’.

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“…However, according to McCullough et al [33], in the short term, maintaining existing semi-natural habitats in the landscape may be more beneficial for plant production than creating flower strips adjacent to crops. According to Beyer et al [34], the feeding area for pollinators shapes both the surrounding landscape and crops, and they are subject to seasonal fluctuations and annual cycles.…”

Section: Introductionmentioning

confidence: 99%

Flower Strips as an Ecological Tool to Strengthen the Environmental Balance of Fields: Case Study of a National Park Zone in Western Poland

Antkowiak,

Kowalska,

Trzciński

2024

Sustainability

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Maintaining biodiversity in agrocenoses is becoming an important element of sustainable development strategies. Flower strips can perform various functions, and their use in the agricultural landscape is a form of a natural mechanism for regulating the agricultural habitat and improving the effectiveness of biological methods of combating crop pests. This manuscript is a case study in Wielkopolska National Park, a valuable wildlife area situated in a temperate zone characteristic of the climate conditions of western Poland. The purpose of this study was to analyze the species composition of plants in a flower strip two years after sowing a mixture of seeds of perennial plants, and to determine the diversity of the collected arthropods depending on the flowering intensity of plants in the strip. The most intense flowering period in the flower strip occurred in June, when the number of flowering plants was the highest and belonged to one species, Trifolium repens (81.52% of all flowering plants). In the same month, the largest share of beneficial arthropods were specimens from Hymenoptera/Parasitica (29.15%), which may indicate their preference for T. repens. The share of beneficial arthropods in relation to all caught arthropods was higher in June (58.74%) than in July (35.16%), with Hymenoptera predominating, represented mainly by Parasitica, which may indicate their preference for species from the genus Trifolium.

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Contrasting effects of past and present mass-flowering crop cultivation on bee pollinators shaping yield components in oilseed rape

Cited by 13 publications

References 66 publications

Effects of regional crop rotations on autumn insect pests in winter oilseed rape

Effects of regional crop rotations on autumn insect pests in winter oilseed rape

Pollinator nutrition and its role in merging the dual objectives of pollinator health and optimal crop production

Flower Strips as an Ecological Tool to Strengthen the Environmental Balance of Fields: Case Study of a National Park Zone in Western Poland

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