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Pyrus calleryana, also known as the Callery pear or Bradford pear, is a species of pear tree native to China and Vietnam, [2] in the family Rosaceae. It is most commonly known for its cultivar 'Bradford' and its offensive odor, widely planted throughout the United States and increasingly regarded as an invasive species .
While the Bradford pear tree is a sterile cultivar that can’t pollinate itself, it can cross-pollinate with other types of pear trees to create a wild hybrid tree. These vigorous hybrids produce ...
Over 3000 cultivars of the pear are known. [1] The following is a list of the more common and important cultivars, with the year and place of origin (where documented) and an indication of whether the pears are for cooking, eating, canning, drying or making perry.
Trees that are cross-pollinated or pollinated via an insect pollinator produce more fruit than trees with flowers that just self-pollinate. [1] In fruit trees, bees are an essential part of the pollination process for the formation of fruit. [2] Pollination of fruit trees around the world has been highly studied for hundreds of years. [1] Much ...
The Callery pear, or Bradford pear, is one of those vampires. Over the years, Callery pear (Pyrus calleryana) has become one of the most widely planted ornamental trees in the US. But over that ...
Rust, Kern's pear Gymnosporangium kernianum. Rust, Pacific Coast pear Gymnosporangium libocedri. Rust, pear trellis (European pear rust) Gymnosporangium fuscum. Rust, Rocky Mountain pear Gymnosporangium nelsonii. Side rot Phialophora malorum. Silver leaf Chondrostereum purpureum. Sooty blotch Gloeodes pomigena. Thread blight (Hypochnus leaf blight)
With the decline of both wild and domestic pollinator populations, pollination management is becoming an increasingly important part of horticulture.Factors that cause the loss of pollinators include pesticide misuse, unprofitability of beekeeping for honey, rapid transfer of pests and diseases to new areas of the globe, urban/suburban development, changing crop patterns, clearcut logging ...
bush beans, [6] cabbage, [6] lettuce, [6] kohlrabi, onions, brassicas, [6] [20] passion fruit [22] Bush beans, [6] onions, kohlrabi, catnip, [23] garlic, mint: Runner or pole beans: Good for adding minerals to the soil through composting leaves which have up to 25% magnesium. Runner or pole beans and beets stunt each other's growth. Brassicas ...