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Hort 311 – Vegetative Production of Pear Daniel LovejoyHORT 31102/10/14Assignment #4Vegetative Propagation of Pear The common pear is susceptible to several viruses, and yields best in particular soils. Rootstocks have been used to improve its immunity. Rootstocks have also been used to make pears more tolerant of poor draining, heavy soils. Fireblight, is a common virus.