FLOWER VISITING INSECTS DURING THE BLOOM PERIOD OF JAPANESE PEAR ORCHARDS IN BRAZIL
This study aimed to evaluate the amount of visits of the main insect pollinators during flowering period in orchards of three Japanese pear cultivars and at two different locations and years with different climates in southern Brazil: Caçador (CD) and São Joaquim (SJ). During the flowering period, at 9 am and 3 pm, three trees of each cultivar were randomly chosen and the number of potentially pollinating insects per tree was quantified for a period of 3 min. In Caçador, the number of bees was also quantified on the ruderal plants inside the orchard. The highest numbers of flower visits were observed in the afternoon (3 pm), although the amount of pollinating insects in pear, both in the warmer climate region (CD) as in the colder climate region (SJ), is considered low according to the literature. Ruderal plants (white clover and dandelion, among others) with high sugar content in nectar and which grow between the tree rows attract more honey bees than pear tree flowers. In São Joaquim, in the first evaluation year, we did not detect significant nectar secretion and pollinating insects were only attracted to flowers by its pollen. It is necessary to install a larger number of honey bee hives per area to improve adequate pollination in pear orchards.
Faoro, I.D. and Orth, A.I. (2015). FLOWER VISITING INSECTS DURING THE BLOOM PERIOD OF JAPANESE PEAR ORCHARDS IN BRAZIL . Acta Hortic. 1094, 275-279
Pyrus, pollinization, insects