VALUE AND USE
SPECIES: Juglans major | Arizona Walnut 



WOOD PRODUCTS VALUE : 
Arizona walnut is not an important timber tree due to its limited
distribution and small bole size [17].  Its durable wood is suitable for
furniture, gunstocks, veneer, and fenceposts [4,29,41,56].


IMPORTANCE TO LIVESTOCK AND WILDLIFE : 
Arizona walnut provides habitat or food to wildlife [9].  Squirrels,
birds, and other wildlife consume its fruits [17,56].  Squirrels eat the
fruits immediately and do not cache them [48].  Arizona walnut
communities have high species richness of breeding birds [51].


PALATABILITY : 
Arizona walnut is the least desirable species for cattle browsing in
southeastern Arizona riparian areas [45].


NUTRITIONAL VALUE : 
NO-ENTRY


COVER VALUE : 
The branches and trunks of Arizona walnut provide cavities to acorn
woodpeckers in riparian bottoms and drainages of southeastern Arizona [38].



VALUE FOR REHABILITATION OF DISTURBED SITES : 
NO-ENTRY


OTHER USES AND VALUES : 
Arizona walnut is valued as a shade tree [17,29].  Throughout its range,
the fruits are gathered and eaten by people [4,29,41].


MANAGEMENT CONSIDERATIONS : 
Arizona walnut may compete with marketable timber species following the
harvest of mixed conifer stands in Arizona.  In an Arizona reforestation
project, herbicide treatment of Arizona walnut gave limited (16 percent)
control [14].

Even though Arizona walnut is sometimes a community dominant, it usually
is present in low densities or frequencies [48].  Arizona walnut
densities in south-central Arizona riparian areas may be as low as one
tree per 1,345.5 square feet (125 sq m), with maximum basal areas of
27.8 square inches per 1,345.5 square feet (179.4 sq cm/125 sq m) [54].

Vegetative propagation of Arizona walnut by stem cuttings and tissue
culture has not been successful [40].

Arizona walnut fruits were evaluated for use as a multipurpose energy
producing crop in arid areas.  Yields of oils and other organic
compounds from the fruits were reasonable and warrant further study [12].

Arizona walnut is highly susceptible to walnut anthracnose (Gnomonia
leptostyla) which defoliates trees [6].  This fungus transmits
easily to commercial walnut cultivars.  Arizona walnut seedlings are
susceptible to root and crown rots [32].

Related categories for Species: Juglans major | Arizona Walnut