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In a message dated 7/20/99 8:51:56 AM Eastern Daylight Time, GARDENGUY0 
writes:

> Relative Attractiveness Studies. The relative attractiveness of 11 
> flowering plants to aphidophagous hoverflies (Diptera: Syrphidae) and 
> parasitic wasps (Hymenoptera: Ichneumonidae and Brachonidae) was evaluated 
at 
> the Oregon State University Vegetable Research Farm. Flowers included seven 
> annuals: annual alyssum (Lobularia maritima), calendula (Calendula 
> officinalis), cilantro (Coriandrum sativa), mustard (Brassica juncea), 
> Phacelia (Phacelia tanacetifolia), buckwheat (Fagopyrum esceulentum), and 
> marigold (Tagetes patula ) and four perennials: yarrow (Achillea 
millefolium),
>  Korean licorice mint (Agastache rugosa) fennel (Foeniculum vulgare) and 
> perennial alyssum (Aurinia saxitalis). Flowering plants were grown in 1 m2 
> plots in a complete randomized-block design with four replications. Six of 
> these plants were also evaluated for attractiveness to aphidophagous 
> hoverflies at two organic farms (Denison Farm, Corvallis, and Persephone 
Farm,
>  Lebanon) including, three annuals: annual alyssum, phacelia, and cilantro, 
> and three perennials: yarrow, Korean licorice mint, and fennel. At the two 
on-
> farm sites, flowers were grown in 1 m2 plots in a complete randomized-block 
> design with three replications.
>  Relative attractiveness of flowering plants to hoverflies was assessed by 
> conducting timed observations of feeding-visit frequencies. Numerical 
> abundance of parasitic hymenoptera (Brachonidae and Ichneumonidae) wasps 
was 
> estimated by timed vacuum sampling. Blooming times of plant species varied, 
> and evaluations were only made during blooming periods.
>  A sweep net was used to collect hoverflies associated with each insectary 
> flower species; representatives of these hoverflies were sent to Germany 
and 
> identified by a hoverfly systematist. This reference collection was then 
used 
> to identify all hoverfly species collected in the experiments.
>  




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  • To: G*@aol.com
  • Subject: (no subject)
  • From: G*@aol.com
  • Date: Tue, 20 Jul 1999 08:51:56 EDT
  • Full-name: GARDENGUY0
Relative Attractiveness Studies. The relative attractiveness of 11 flowering 
plants to aphidophagous hoverflies (Diptera: Syrphidae) and parasitic wasps 
(Hymenoptera: Ichneumonidae and Brachonidae) was evaluated at the Oregon 
State University Vegetable Research Farm. Flowers included seven annuals: 
annual alyssum (Lobularia maritima), calendula (Calendula officinalis), 
cilantro (Coriandrum sativa), mustard (Brassica juncea), Phacelia (Phacelia 
tanacetifolia), buckwheat (Fagopyrum esceulentum), and marigold (Tagetes 
patula ) and four perennials: yarrow (Achillea millefolium), Korean licorice 
mint (Agastache rugosa) fennel (Foeniculum vulgare) and perennial alyssum 
(Aurinia saxitalis). Flowering plants were grown in 1 m2 plots in a complete 
randomized-block design with four replications. Six of these plants were also 
evaluated for attractiveness to aphidophagous hoverflies at two organic farms 
(Denison Farm, Corvallis, and Persephone Farm, Lebanon) including, three 
annuals: annual alyssum, phacelia, and cilantro, and three perennials: 
yarrow, Korean licorice mint, and fennel. At the two on-farm sites, flowers 
were grown in 1 m2 plots in a complete randomized-block design with three 
replications.
Relative attractiveness of flowering plants to hoverflies was assessed by 
conducting timed observations of feeding-visit frequencies. Numerical 
abundance of parasitic hymenoptera (Brachonidae and Ichneumonidae) wasps was 
estimated by timed vacuum sampling. Blooming times of plant species varied, 
and evaluations were only made during blooming periods.
A sweep net was used to collect hoverflies associated with each insectary 
flower species; representatives of these hoverflies were sent to Germany and 
identified by a hoverfly systematist. This reference collection was then used 
to identify all hoverfly species collected in the experiments.

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