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Monitoring of floral visitors and their importance on comon buckwheat
NOLČ, Radek
Common buckwheat is a crop that attracts many pollinators. The most important of these is honeybee. The aim of this bachelor's thesis was to find out what share of honeybee is on the pollination of common buckwheat and what its significance for the yield of archenes at different sowing times. A small-plot field experiment was established in the Pilsen Region, in the place of Zábělá, on three sowing times (1st May, 1st June and 1st July 2019).The buckwheat stand was evaluated from the point of: flowering time, total vegetation time of the stand, number of inflorescences and flowers on a plant, number of archenes on a plant, the weight of thousand of archenes and the yield of archenes. Monitoring of pollinators was performed at the time of buckwheat flowering at 9, 11 and 14 hours, during 10 minutes, using photos. The share of honeybees on the pollination of buckwheat was 29% of effective pollinators. A total of 24 insect species were recorded on buckwheat flowers. The highest number of buckwheat pollinators was recorded in July (21 species). The most common effective pollinator of buckwheat were hoverflies (57%). The most visits of honeybees were recorded at the second sowing time (on 1 June 2019), which also had the highest expected yield.
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