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Only the best trees are left to seed the regeneration. In many cases the mineral soil is intentionally exposed by equipment allowing small-seeded species that require exposed soil to grow. [ 2 ] [ 6 ] Sometimes, the cut is followed by the use of herbicides or prescribed fire to suppress any undesired vegetation. [ 2 ]
Pinus virginiana, the Virginia pine, scrub pine, Jersey pine, possum pine, is a medium-sized tree, often found on poorer soils from Long Island in southern New York south through the Appalachian Mountains to western Tennessee and Alabama. The usual size range for this pine is 9–18 m, (18–59 feet) but can grow larger under optimum conditions ...
In some cases, they will drop their seeds, but in most Pinus serotina, they will persist and hold their seeds. The color of the seed cones and seed scales is red-brown in color. The foliar sheaths measure 0.4 to 0.8 with long bases. The seeds are ovule in shape, being 0.2 and 0.24 in length, and have an angled tip colored a pale brown. [10]
Pinus pinaster, the maritime pine [2] [3] or cluster pine, [2] is a pine native to the south Atlantic Europe region and parts of the western Mediterranean. It is a hard, fast growing pine bearing small seeds with large wings.
The male cones are slender conic, 5–11 cm (2.0–4.3 in) long and 1–2 cm (0.39–0.79 in) broad and reddish-brown in colour and are lower on the tree than the seed cones. [3] Seedlings appear to be slow-growing [3] and mature trees are extremely long-lived; some of the older individuals today are estimated to be between 500 and 1,000 years old.
On drier sites following fires, black spruce can take over stands of faster growing jack pine (Pinus banksiana) by virtue of its ability to grow in partially shaded conditions which inhibit pine seedlings. [13] But black spruce seedlings are intolerant to the low light and low moisture conditions under mature spruce stands.
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