Document Type

Article

Journal/Book Title/Conference

Journal of Apicultural Research

Volume

19

Issue

1

Publication Date

1-1-1980

First Page

79

Last Page

82

Abstract

Syrphids (order Diptera, family Syrphidae) were numerically the dominant visitors on umbels of flowering parsley. Honeybees were the next most numerous, and their numbers increased through-out the bloom period, while the syrphids showed a large population decline prior to mid-bloom. Seed yields were nearly 3 times as great with open pollination as when pollinators were excluded from the flowers. Seed set, an expression of pollinating activity, was maximum during weeks 2,3,4 of a 5-week bloom period.

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