Słowa kluczowe: drzewa, krzewy, kwitnienie, nektarowanie. oblot, pożytek pszczeli.
Keywords: trees, bushes, blooming, nectar secretion, foraging by bees, nectar flow.
http://miesiecznik-pszczelarstwo.pl/pzn/sites/default/files/...
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Honey flow is a term used by beekeepers indicating that one or more major nectar sources are in bloom and the weather is favorable for bees to fly and collect the nectar in abundance.

The higher northern and southern latitudes with their longer summer day time hours can be of considerable benefit for honey production. Flowers bloom for longer hours and the time per day that bees can fly is extended, so the number of trips per day is higher. In addition, the higher latitudes do not have hot and dry periods in the summer where virtually all of the excess nectar flow dries up.

Where there are a succession of nectar sources throughout the summer season, a honeyflow may last for many weeks. In other areas significant honeyflows may only last two or three weeks per year from one or a limited number of nectar sources. The rest of the year is spent in just maintenance – a situation where the incoming nectar and pollen nearly match the needed food for the hive, or where sufficient reserve stores must be present for the hive to survive a winter season.

https://en.wikipedia.org/wiki/Honey_flow


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Note added at 15 mins (2018-02-27 02:29:51 GMT)
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IIn our future research efforts, we plan to merge the forage regions by state with available measurements of the Honey Bee Nectar Flow and associated local forage information. Historical measurements of the Nectar Flow, tracked by weighing hives during the blooming season, are available for a number of sites in the Mid-Atlantic region. Scale hive observations have shown that the Nectar Flow is advancing in the Mid-Atlantic region similar to changes in green up detected in satellite imagery.
https://honeybeenet.gsfc.nasa.gov/Honeybees/Forage_info.htm
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Using a wireless sensor network, this study aims to monitor the nectar flow in the region that the migratory beekeepers plan to visit. The wireless sensor network developed was tested in a region with a known nectar flow period from June to July.

http://journals.sagepub.com/doi/full/10.1177/155014771667800...

tako rzecze wikipedia