The needles contain a substance called terpene, this is released when rain washes over the needles and it has a negative effect on the germination of some plants, including wheat. A very wind resistant tree, it can be grown as part of a shelterbelt planting. Trees have proved to be very resistant to maritime exposure on our Cornwall trial grounds[K]. Resin and turpentine are obtained from the wood, they are used in ointments and plasters. Oleo-resins are present in the tissues of all species of pines, but these are often not present in sufficient quantity to make their extraction economically worthwhile. The resins are obtained by tapping the trunk, or by destructive distillation of the wood. In general, trees from warmer areas of distribution give the higher yields. Turpentine consists of an average of 20% of the oleo-resin and is separated by distillation. Turpentine has a wide range of uses including as a solvent for waxes etc, for making varnish, medicinal etc. Rosin is the substance left after turpentine is removed. This is used by violinists on their bows and also in making sealing wax, varnish etc. Pitch can also be obtained from the resin and is used for waterproofing, as a wood preservative etc.Wood - non durable. Used for rough carpentry and furniture.
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A very hardy tree, it is extensively planted for timber and shelter, tolerating maritime exposure. Fast growing when young, it outgrows the Corsican pine (P. nigra maritima) for the first 5 or 6 years but is then rapidly overtaken by that species. Plants are strongly outbreeding, self-fertilized seed usually grows poorly. They hybridize freely with other members of this genus. Leaf secretions inhibit the germination of seeds, thereby reducing the amount of plants that can grow beneath the tree. Trees tend to be short-lived in cultivation.Plants in this genus are notably susceptible to honey fungus.
Problems, pests & diseases
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