VALUE AND USE
SPECIES: Quercus marilandica | Blackjack Oak



WOOD PRODUCTS VALUE : 
Blackjack oak is not a preferred timber species [48].  The wood is hard,
heavy, and strong with a wide, light sapwood.  It is used mainly for
fence posts, railroad ties, and fuel [50].


IMPORTANCE TO LIVESTOCK AND WILDLIFE : 
Blackjack oak provides cover and habitat, and acorns are an important
food source for mammals and birds [50].


PALATABILITY : 
Among 12 southeastern oak species, blackjack oak acorns ranked fourth in
preference to the fox squirrel [38].

Blackjack oak browse is unpalatable [5].


NUTRITIONAL VALUE : 
Blackjack oak acorns are generally high in fat and low in protein.
Percent nutrient values compiled by Reid and Goodrum [45] from the
literature are given below:

location      protein     fat        crude fiber   calcium    phosphorus

Texas         8.07        26.41      11.55
Louisiana     5.1          5.6       22.8
Mississippi   6.29        10.66      20.94          0.37      0.09
Missouri      5.75        17.73      21.79          0.36      0.09         


COVER VALUE : 
NO-ENTRY


VALUE FOR REHABILITATION OF DISTURBED SITES : 
NO-ENTRY


OTHER USES AND VALUES : 
NO-ENTRY


MANAGEMENT CONSIDERATIONS : 
Blackjack oak is probably susceptible to most insects and diseases that
attack eastern oak species.  Twolined chestnut borer (Agrilus
bilineatus) and the canker fungus, Hypoxylon atropunctatum, have been
associated with dead blackjack oaks [21].

Hardwood competition in pine plantations and hardwood expansion into
grasslands are often controlled with herbicides.  Tebuthiuron and
triclopyr are effective in killing blackjack oak in grasslands of the
Cross Timbers area of Oklahoma [52].  Velpar L, Garlon 3A, and Krenite
were tested on blackjack oak that ranged between 4 and 9 inches
(10.1-22.9 cm) in d.b.h.  Velpar L was effective at killing blackjack
oak at all injection spacings (3, 5, and 7 inches [7.6, 12.7, and 17.8
cm]) in both May and December.  Garlon 3A was effective only in May at
all spacings, and Krenite was effective only at the 3-inch (7.6 cm)
spacing in May [10].

Blackjack oak expands into prairies where heavy cattle grazing has
reduced the grass fuel load.  Fires, which usually prevent blackjack oak
expansion, are cooler because of the reduced fuel load and not as
effective at killing woody species [23].

Related categories for Species: Quercus marilandica | Blackjack Oak