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Selection cutting in California, May 1972 The results of selective cutting of Ponderosa Pine. Selection cutting, also known as selection system, is the silvicultural practice of harvesting trees in a way that moves a forest stand towards an uneven-aged or all-aged condition, or 'structure'.
In an alternative method, the cut vegetation is formed into bales using a baler, making balage (North America) or silage bales (UK, Australia, New Zealand). The grass or other forage is cut and partly dried until it contains 30–40% moisture (much drier than bulk silage, but too damp to be stored as dry hay).
Uneven-aged management techniques where only certain trees are harvested, such as shelterwood systems, incur the same hourly costs while harvesting fewer trees per hour. This reality explains why in Canada, for example, 90% of forests harvested are done so by clear cut through an even-aged management system. [5]
Pollarding tends to make trees live longer by maintaining them in a partially juvenile state and by reducing the weight and windage of the top part of the tree. [6] Older pollards often become hollow, so it can be difficult to determine age accurately. Pollards tend to grow slowly, with denser growth-rings in the years immediately after cutting.
The intent is to allow the pasture plants and soil time to recover. [2] Healing native rangeland may require a combination of burning and rotational grazing. [3] [4] [5] Rotational grazing can be used with ruminants such as cattle, sheep or goats; non-ruminants such as pigs can also be used. The herds graze one portion of pasture, or a paddock ...
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The most popular time for this type of hunt is during the winter months — January to March. The ground is more visible with leaves off trees ... Wild hogs have plagued Texas land going back to ...
A forage harvester – also known as a silage harvester, forager or chopper – is a farm implement that harvests forage plants to make silage. [1] Silage is grass , corn or hay , which has been chopped into small pieces, and compacted together in a storage silo , silage bunker, or in silage bags. [ 2 ]