Pear Tree Propagation and Pollination
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Pear Tree Propagation
Like most fruit trees, contemporary cultivation methods suggest that pear trees are propagated by grafting. If we start pear trees from seeds of a known variety, those trees will produce fruits in 7-10 years, while the harvested fruits will be significantly different than the initial fruit. Consequently, professional pear farmers choose grafted rootstocks in order to achieve product uniformity and quality. In a few words, professional pear growers plant a pear tree that is a combination of two different plant tissues, the rootstock and the scion. The rootstock is the lower part of the tree and produces the root system. Rootstock also determines the tree’s final height and can protect the whole tree from soil borne diseases. The scion produces the upper part of the tree and of course determines fruit’s characteristics. Both the rootstock and the scion must be carefully selected and each one of them may result in poor production.
Pear Tree Pollination
Most pear tree varieties are not self-fertile. This means that most trees need pollination partner trees of a different variety in order to set fruit. Even the self-fertile pear varieties are reported to produce higher yields when a pollination partner tree is planted at a close distance. Pear growers often plant pollinating cultivars that are compatible and flower at closely the same time as the commercial cultivars. It is also important to place the pollinating cultivars at different spots of the orchard, so as to ensure adequate cross pollination.
Pear trees need bees at a great percentage in order to pollinate and produce fruits. In commercial farms, placing 3 beehives every 2,5 acres (or 1 hectare) of orchard has been found to be beneficial, if not necessary.
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7.) Pear Tree Propagation and Pollination
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