Attractiveness of common insectary and harvestable floral resources to beneficial insects

Hogg, Brian; Bugg, Robert L.; Daane, Kent M.

doi:10.1016/j.biocontrol.2010.09.007

Cited by 136 publications

(100 citation statements)

References 37 publications

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“…More advantage may be achieved by developing the design of the intercropping system or the species choice. In the present study none of the intercrop species were especially attractive to insects through their production of pollen or nectar in their flowers, but potentially introduction of such species could have a significant effect on insect population dynamics in the crops (Hogg et al, 2011).…”

Section: Product Quality and Biological Pest Regulationmentioning

confidence: 53%

Crop yield, root growth, and nutrient dynamics in a conventional and three organic cropping systems with different levels of external inputs and N re-cycling through fertility building crops

Thorup‐Kristensen

Dresbøll

Kristensen

2012

European Journal of Agronomy

141

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. b s t r a c tOne of the core ideas behind organic production is that cropping systems should be less dependent on import of resources, and minimize negative effects on the surrounding environment compared to conventional production. However, even when clearly complying with regulations for organic production, it is not always obvious that these goals are reached. As an example, strong dependence on import of manure is often seen in current organic production, especially in systems producing high value crops such as vegetable crops.The aim of the present study was to test novel approaches to organic rotations, designed to reduce the reliance on import of external resources significantly. We compared a conventional system (C) and an organic system relying on manure import for soil fertility (O1) to two novel systems (O2 and O3) all based on the same crop rotation. The O2 and O3 systems represented new versions of the organic rotation, both relying on green manures and catch crops grown during the autumn after the main crop as their main source of soil fertility, and the O3 system further leaving rows of the green manures to grow as intercrops between vegetable rows to improve the conditions for biodiversity and natural pest regulation in the crops. Reliance on resource import to the systems differed, with average annual import of nitrogen fertilizers of 149, 85, 25 and 25 kg N ha −1 in the C, O1, O2 and O3 systems, respectively. As expected, the crop yields were lower in the organic system. It differed strongly among crop species, but on average the organic crops yielded c. 82% of conventional yields in all three organic systems, when calculated based on the area actually grown with the main crops. In the O3 system some of the area of the vegetable fields was allocated to intercrops, so vegetable yields calculated based on total land area was only 63% of conventional yields.Differences in quality parameters of the harvested crops, i.e. nutrient content, dry matter content or damages by pests or diseases were few and not systematic, whereas clear effects on nutrient balances and nitrogen leaching indicators were found. Root growth of all crops was studied in the C and O2 system, but only few effects of cropping system on root growth was observed. However, the addition of green manures to the systems almost doubled the average soil exploration by active root systems during the rotation from only 21% in C to 38% in O2 when measured to 2.4 m depth. This relates well to the observed differences in subsoil inorganic N content (N inorg , 1-2 m depth) across the whole rotation (74 and 61 kg N ha −1 in C and O1 vs. only 22 and...

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Section: Product Quality and Biological Pest Regulationmentioning

confidence: 53%

Crop yield, root growth, and nutrient dynamics in a conventional and three organic cropping systems with different levels of external inputs and N re-cycling through fertility building crops

Thorup‐Kristensen

Dresbøll

Kristensen

2012

European Journal of Agronomy

141

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“…important agents in biological pest control (Tenhumberg & Poehling 1995;Sadeghi & Gilbert 2000;Basky 2005;Pascual-Villalobos et al 2006; Thomson & Hoffmann 2009;Penvern et al 2010;Pilkington et al 2010). Larvae consume even one or two thousands aphids during the 7-10 day developing period (Visnyovszky 1989;Dib et al 2010;Hogg et al 2011). However, despite of their important role in the natural and agricultural ecosystems, from Hungary no data are published in international journals about the hoverfly communities.…”

Section: Introductionmentioning

confidence: 99%

Hoverfly (Diptera: Syrphidae) community of a cultivated arable field and the adjacent hedgerow near Debrecen, Hungary

Földesi

Kovács‐Hostyánszki

2014

Biologia

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A hoverfly (Syrphidae) community was investigated in a cultivated wheat field and the adjacent hedgerow near Debrecen (Hungary). We monitored the change of species richness and abundance of hoverflies along three transects in the hedgerow and in the wheat field in different distances (10 m, 20 m) from the hedgerow. The effect of sampling methods on the number of hoverfly species and individuals was analyzed. Two sampling methods were used to catch hoverflies: netting and pan traps. The whole sampling period was divided into three subperiods, which are early (22 nd April -2 nd June), middle (11 th June -1 st August) and late (6 th August -11 th September). Altogether 1,214 individuals of 22 species were sampled. Fourteen species with 78% of individuals belonged to the aphidophagous group, feeding on aphids as larvae. Altogether 861 individuals of 22 hoverfly species were sampled by netting and 353 individuals of 10 species by pan traps. The total number of hoverfly species was significant lower in the late period than in the early. The total abundance was higher in the middle period compared to the early. The species richness and abundance of aphidophagous species followed a similar pattern as the total species values. The species richness and abundance of hoverflies were significant higher in 10 m and 20 m distance in the wheat field than along the hedgerow. The results suggest that the pan traps were less efficient in the hedgerow than the netting, but in the wheat field they sampled more hoverflies because of visually alluring effect on hoverflies in the absence of flowers.

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“…This makes these resource plants costly to successfully maintain , whereas native perennial flowering plants are sown once, adapted to the local environment, less likely to become invasive, and may increase native beneficial insect diversity in agricultural landscapes (Stephens et al, 2006, Fiedler & Landis, 2007a, 2007b. A well-designed flowering border adjacent to a crop field will provide necessary resources and alternative food source for natural enemies during periods when crop pest and crop flower numbers are low, thus maintaining high populations of natural enemies supported by the provision of nutrients throughout the season (Landis et al, 2000;Isaacs et al, 2009;Hogg et al, 2011).…”

Section: Flowering Plantsmentioning

confidence: 99%

“…Natural enemies from a broad range of orders including Hymenoptera, Diptera, Coleoptera, Heteroptera, Neuroptera, Araneae, and Acari have been observed to require and/or benefit from access to flowering resources . Access to pollen and nectar sources can significantly increase the activity, longevity, and fecundity of these predators and parasitoids (Wäckers et al, 2008;Hogg et al, 2011), and thus, the availability of flowering resources can be essential to natural enemy efficacy in biological control of pest insects (van Rijn & Sabelis, 2005). These non-prey requirements can be fulfilled with a diverse assemblage of flowering plants, which will provide necessary resources that support populations of predators and parasitoids throughout the season.…”

Section: Nutritional Requirements: Pollen and Nectar Resourcesmentioning

confidence: 99%

Manipulation of Natural Enemies in Agroecosystems: Habitat and Semiochemicals for Sustainable Insect Pest Control

Rodriguez‐Saona¹,

Blaauw²,

Isaacs³

2012

Integrated Pest Management and Pest Control - Current and Future Tactics

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Attractiveness of common insectary and harvestable floral resources to beneficial insects

Cited by 136 publications

References 37 publications

Crop yield, root growth, and nutrient dynamics in a conventional and three organic cropping systems with different levels of external inputs and N re-cycling through fertility building crops

Crop yield, root growth, and nutrient dynamics in a conventional and three organic cropping systems with different levels of external inputs and N re-cycling through fertility building crops

Hoverfly (Diptera: Syrphidae) community of a cultivated arable field and the adjacent hedgerow near Debrecen, Hungary

Manipulation of Natural Enemies in Agroecosystems: Habitat and Semiochemicals for Sustainable Insect Pest Control

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