PINUS OOCARPA PDF

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Pinus oocarpa is a closed-cone pine native to Mexico and Cen- tral America ( Perry ). It has a geographic range of km from Sinaloa, Mexico (28°20'N . PDF | Pinus oocarpa var. oocarpa Schiede (Pinophyta, Pinales, Pinaceae subgenus Pinus) is an economically-important conifer of Mexico and. PDF | Understanding of the effects of altitude on tree growth is central to Stands of Pinus oocarpa at the altitude of m, m and m.


Pinus Oocarpa Pdf

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Description of Pinus oocarpa (pino de colorado). kaz-news.info downloads/capitulos_especies_y_anexos/kaz-news.info P. oocarpa belongs to Pinus section Diploxylon, characterized by hard . http:// kaz-news.info Pinus oocarpa is a species of pine tree native to Mexico and Central America. It is the national . Create a book · Download as PDF · Printable version.

Inst Biol. Los Pinos Mexicanos.

Segunda Edicion. Mexico City, Mexico pp. Google Scholar McCarter, P.

Pinus patula subspecies tecunumanii; The application of numerical techniques to some problems of its taxonomy. Google Scholar Statistical Analysis System. Google Scholar Schwerdtfeger, F. Los Pinos de Guatemala. Google Scholar Styles, B. The identity of Schwerdtfeger's Central American Pine. Forest Genetic Resources Information, No.

Food and Agriculture Organization, Rome. Studies in variation in Central American pines I.

The taxonomic status of closely related closed cone pines in Mexico and Central America

The identity of Pinus oocarpa var. Silvae Gen. Google Scholar and P. Caribaea var.

Hondurensis were found that yielded larger volumes of wood[ ]. The disadvantages of this species as a plantation crop include its slow initial growth on some sites, poor wind firmness, susceptibility to nutrient deficiencies and needle diseases, and a relatively light crown that permits a continuous weedy understory to develop, increasing the fire danger[ ].

However, recent problems of stem breakage in P. Tecunumanii have once again stimulated interest in planting more of this plant[ ].

Growers like its good wood quality, its ability to sprout from cut stumps, and the ease with which it vegetatively propagates[ ].

An extremely variable species in its native environment because it has evolved under diverse climatic and edaphic patterns over its km geographic distribution[ ].

In South-East Asia, plantation-grown trees often do not produce viable seed, due to unsynchronized production of male and female cones[ ].

This species is a principal host for the dwarf mistletoe Arceuthobium aureum subsp. Our new book to be released soon is Edible Shrubs. Shop Now Propagation Seeds do not usually require pre-treatment but soaking them for 24 hours in warm water prior to sowing can improve the rate and percentage of germination[ , ]. Seeds from the northernmost part of the plants range may require a period of cold stratification[ ].

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The seeds begin to germinate in 7 - 10 days when sown in moist sand[ ]. The seedlings usually reach a field planting height of 20 - 25 cm in 5 - 7 months[ ].

Higher temperatures are not recommended. Because the seeds have thin coats that can be easily split or cracked, great care is needed if dewinging the seed by hand[ ]. Successful natural regeneration is only possible where a relatively large amount of sunlight reaches the ground[ ].

Experiments in Indonesia showed that scions of P. Oocarpa grafted onto P.

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Merkusii grow faster in height than controls of the stock species[ ]. Description Top of page General The tree is a medium to large pine, from 15 to about 37 m high. The stem normally reaches cm and occasionally 90 cm in diameter. The lower branches are more horizontal while the top ones are more ascending, forming a thick, rounded crown.

The bark is cm thick and is a dark greyish brown colour when the tree is older and mature. The bark also has shallow vertical and horizontal fissures, which gives the bark rough, longitudinal, geometric shaped plates.

Young trees also have a rough, but thin and reddish brown bark. Branchlets are stiff, upright, rough and scaly. The bark of branchlets is reddish brown and the bases of the leaf bracts are decurrent. Foliage The leaves of the tree are in fascicles of 5 and occasionally 3 or 4.

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Needles are usually 20 to 25 cm long, thick and stiff and are occasionally slender and flexible. The margins are finely serrated and the stomata are present on the dorsal and ventral surfaces. There are resin canals, which are mostly septal.

The exterior wall of the endoderm is not thickened.The Tree: Tree size varies considerably over its range; heights up to ft; diameters 16 to 32 in. Applied externally, it is a very beneficial treatment for a variety of skin complaints, wounds, sores, burns, boils etc and is used in the form of liniment plasters, poultices, herbal steam baths and inhalers[4 ]. Additional Reading: 1.

Tree Growth Response of Pinus oocarpa Along Different Altitude in Dedza Mountain Forest Plantation

Major references Chudnoff, M. The cones remain on the tree for long times. Mexico City, Mexico pp.

The wings are 10 to 12 mm long, articulated and thickened at the base where it joins the seed. About , seeds weigh a kilogramme. Description Evergreen, monoecious, medium-sized tree up to 30 —40 m tall; bole branchless for up to 15 m, up to 80 — cm in diameter, usually straight and cylindrical; bark 2—4 cm thick, bark surface grey to red brown, rough and scaly; crown wide, open; branches long, flexible, curved upwards.

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Over the first 25 years an annual height growth of 1 m is possible, with an annual growth in bole diameter of 1.