Mesquite

Many; see text.

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Mesquite (Genus Prosopis) is a leguminous plant found in the United States from the Texas - Mexico border up to southwestern Kansas and from southeastern California and southwestern Utah to the southern limits of the Sonoran desert. They are also found in the Chihuahuan Desert in Mexico and in the steppes of Syria and northern Iraq (mediterranean mesquite). The species, Prosopis pallida, was introduceed to Hawai‘i in 1828, and is now a very common tree in the drier coastal parts of the islands.

Related Topics:
Prosopis - United States - Texas - Mexico - Kansas - California - Utah - Sonoran desert - Chihuahuan Desert

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These deciduous trees generally reach a height of 6 to 9 meters (20 to 30 ft), although in most of their range they are shrub size. They have narrow, bipinnately compound leaves 50 to 75 mm (2 to 3 inches) long that are sharply pointed. Some common species of Mesquite are Honey Mesquite (Prosopis glandulosa), Velvet Mesquite (Prosopis velutina), Creeping Mesquite (Prosopis strombulifera) and Screwbean Mesquite (Prosopis pubescens).

Related Topics:
Deciduous - Shrub - Leaves

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Mesquite is an extremely hardy, drought-tolerant plant because it can draw water from the water table through its long taproot (recorded at up to 190 ft in depth). However, it can also use water in the upper part of the ground, depending upon availabliliy. The tree can easily and rapidly move from one water source to the other. Many people, especially ranchers, consider the tree a nuisance because it competes with rangeland grasses for moisture. In many parts of Texas, particularly West and Central Texas, the proliferation of mesquite is directly responsible for lowering groundwater tables, exceeding even man's increased useage.

Related Topics:
Drought - Water - Water table - Taproot - Ranchers - Grass - Groundwater

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Eradicating mesquite is difficult because of the bud regeneration zone located up to 6 inches (150 mm) below ground. The tree can regenerate from a piece of root left in the soil. Some herbicides are not effective against mesquite, and others do not get a complete kill. Using grubbing techniques for removal, while effective against short-term regrowth, are expensive, costing upwards of $70/acre ($17,000/km²).

Related Topics:
Root - Soil - Herbicides

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New growth of mesquite has needle-sharp thorns up to 75 mm (3 in) long. The spines are tough enough to penetrate the soft soles of sneakers or similar footwear, and can easily puncture tires.

Related Topics:
Thorns - Sneakers - Tire

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On the good side, mesquite trees grow fast and furnish shade and wildlife habitat where other trees will not grow. Also, being a legume, it fixes nitrogen in the soil where it grows, although this is a rather newly discovered and still poorly understood part of its life cycle. The wood is hard, allowing it to be used for furniture, implements, and firewood, as it burns slowly. When used to barbecue, the smoke from the wood adds a distinct flavor to the meat. The leaves were once used medicinally; water infused with mesquite leaves can be used as eye drops. The bean pods of the mesquite can be dried and ground into flour, adding a sweet, nutty taste to breads, or used to make jelly or wine.

Related Topics:
Legume - Fixes nitrogen - Wood - Barbecue - Meat - Flour - Bread - Jelly - Wine

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