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The decline of apple and pear trees from their landscape can be expensive to replace and could have a negative effect on tourism. In the long-run, fire blight is a very important factor of economy and society. [citation needed] A relatively small number of apple cultivars are responsible for an enormous proportion of yearly apple production.
Apple scab is a common disease of plants in the rose family that is caused by the ascomycete fungus Venturia inaequalis. [1] While this disease affects several plant genera, including Sorbus, Cotoneaster, and Pyrus, it is most commonly associated with the infection of Malus trees, including species of flowering crabapple, as well as cultivated apple.
The fruit or "apple" is usually produced early in summer and ripens later in summer. Many species of plants have mycorrhizae to assist with nutrient uptake in infertile conditions. Mayapple plants are considered obligately dependent upon such mycorrhizae, although it may also be facultatively dependent upon rhizome age and soil nutrient levels ...
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The name manchineel (sometimes spelled manchioneel or manchineal), as well as the specific epithet mancinella, are from Spanish manzanilla ('little apple'), from the superficial resemblance of its fruit and leaves to those of an apple tree. It is also called beach apple. [5] A present-day Spanish name is manzanilla de la muerte, 'little apple ...
Although it has been said that the apple story is a myth and that he did not arrive at his theory of gravity at any single moment, [227] acquaintances of Newton (such as William Stukeley, whose manuscript account of 1752 has been made available by the Royal Society) do in fact confirm the incident, though not the apocryphal version that the ...
The upper surface is light to dark green. Leaves of the A. glabra are said to have a distinct smell, similar to green apples, that can distinguish it from mangroves. [4] The fruit is oblong through spherical and apple-sized or larger, 7–15 cm long and up to 9 cm diameter, and falls when it is green or ripening yellowish. It disperses by ...