Abstract:
The aim of the study was to describe bee activity levels on various confection varieties in two different growing areas in Israel, and to learn about the different varieties' dependence on bee pollination. There was no significant effect of site location on the bees' activity, but there was a significant effect of cultivar - the average number of bees per blooming head ranged between 0.5 and 1.1. The differences in bee activity were probably due to differences in nectar production and/or accessibility of the nectar to bees. Bagged blooming heads exhibited 0-1% setting, except for one exception, which set 16%. Exposed heads set 49-86% of the seeds. Those results indicate the dependency of the tested confection varieties on bee activity for commercial production. Hand cross-pollination of the exposed blooming heads did not result in increased yield, which indicates that the bees' activity in the field was adequate, and that the empty seeds in the exposed heads probably resulted from physiological characteristics of the cultivars rather than limitations in their pollination.
תפריט נגישות
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מונוכרום
הדגשת קישורים
חסימת אנימציה
פונט קריא
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