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Biology of flowering and nectar production in pear (Pyrus communis)


Biology of flowering and nectar production in pear (Pyrus communis)



Nauchni Trudove Vissh Selskostopanski Institut ' Vasil Kolarov' 19(5): 73-87



Flowering and nectar production of 8 varieties were studied for 4 years in an orchard planted on alluvial soil 153 m above sea level. Flowering began when the accumulated temperature reached 140.1-197.5 deg C. Nectar was secreted day and night for 4.8-9.1 days. Nectar yield and sugar content varied considerably between the species, and values were also affected by weather conditions. Bees collected pollen from the flowers.P.

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