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Stocking measures account for three things: the cover type and species mixture in the stand, the basal area per acre, and the number of trees per acre. [3] Stocking allows for comparing stands that may have diverse ecology. [4] Stocking is a major part of forest management, both in commercial applications and for restoration or preservation.
Basal area is the cross-sectional area of trees at breast height (1.3m or 4.5 ft above ground). It is a common way to describe stand density. In forest management, basal area usually refers to merchantable timber and is given on a per hectare or per acre basis. If one cut down all the merchantable trees on an acre at 4.5 feet (1.4 m) off the ...
The apple tree in question, a member of the Flower of Kent variety, is a direct descendant of the one that stood in Newton's family's garden in 1666. Despite being blown down by a storm in 1820, the tree regrew from its original roots. Its descendants and clones can be found in various locations worldwide.
Ambrosia is a "club" variety of apple, in which a cultivar is patented by an organization that sets quality standards and provides marketing, while production is limited to club members. [7] The name was never trademarked, and the patent has expired in Canada and the United States. [8][9] Centralized control allowed limitation of color ...
Honeycrisp (Malus pumila) is an apple cultivar (cultivated variety) developed at the Minnesota Agricultural Experiment Station's Horticultural Research Center at the University of Minnesota, Twin Cities. Designated in 1974 with the MN 1711 test designation, patented in 1988, and released in 1991, the Honeycrisp, once slated to be discarded, has ...
Periodic annual increment. In forestry, periodic annual increment (PAI) is the change in the size of a tree between the beginning and ending of a growth period, divided by the number of years that was designated as the growing period. [1] For sigmoid growth, the graph of PAI increases rapidly and then quickly declines, approaching zero.
Dovyalis caffra. Dovyalis afra, [a] commonly known as the Kei apple, [3] is a small to medium-sized tree, native to southern Africa. Its distribution extends from the Kei River in the south, from which the common name derives, northwards along the eastern side of the continent to Tanzania. The ripe fruits are tasty, reminiscent of a small apple.
Description. Custard apple at fruit vendor, Sangareddi, India. Flower bud of Annona reticulata. Pollen grains of Annona reticulata. It is a small deciduous or semi- evergreen tree reaching 8–10 metres (26–33 ft) tall with an open, irregular crown. [8][9] The slender leaves are hairless, straight and pointed at the apex (in some varieties ...