Agriculture, Vol. 13 No. 1, 2007.
Original scientific paper
INFLUENCE OF WEATHER CONDITIONS ON HONEY BEE VISITS (Apis mellifera carnica) DURING SUNFLOWER (Helianthus annuus L.) BLOOMING PERIOD
Z. Puškadija
Edita Štefanić
A. Mijić
Z. Zdunić
Nada Parađiković
T. Florijančić
A. Opačak
Abstract
The objective of the investigation was to determine influence of weather conditions on activity of honey bees during blooming time of six sunflower hybrids. The investigation was carried out in 2002 growing season at Kneževi Vinogradi located in Baranja county, north-eastern edge of Croatia. Honey bees communities were moved to the field trial site inside Langstroth-Rooth's bee-hives. Honey bees visiting sunflower head inflorescence was measured at 100, 200, and 300 meters by counting honey bees four times a day (9.00 am, 11.00 am, 1.00 pm, and 5.00 pm). The influence of weather conditions was analysed by Spearman correlation coefficient. Results of the investigation show significant differences regarding honey-bee visit to the head inflorescences in six hybrids, as well as significant influence of air temperature, humidity, precipitation, minimum and maximum air temperature, as well as wind strength.
Keywords
honey bee; sunflower; visit; weather conditions
Hrčak ID:
16147
URI
Publication date:
29.6.2007.
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