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Pecan Cultivar Recommendations for Homes and Low
Input Plantings
Monte Nesbitt, Bill Goff and Cathy Browne
Dept. of Horticulture, Auburn University
General Recommendations
Disease and insect pests
of pecan trees are difficult to control without the aid of costly chemical
pesticides and an “airblast” pecan tree sprayer. Pecan trees can be productive
and enjoyable to homeowners or low input farms if the correct cultivar (variety)
is chosen. Resistance to pecan scab disease is the primary concern when
selecting cultivars for low input or non-spray plantings. Pecan scab is a
fungus that is prevalent throughout the southeastern U.S., and can devastate the
leaves and nuts of unsprayed, susceptible cultivars. Consideration should also
be given to a cultivar’s susceptibility to downy spot disease, fungal leaf
scorch (FLS), and black pecan aphids. Each of these pests severely defoliate
susceptible trees in some years.
Growers who do not plan to provide supplemental irrigation to pecan
trees should generally avoid cultivars which bear very large sized nuts. Small
nut size is an advantage in dry years, because the tree requires less water and
energy to completely fill its kernels.
Pecans have a dichogamous flowering habit and are classified into
two types: protandrous (I); pollen shed first, and protogynous (II); pistillate
flowers formed first. Effective pollination for good nut set is therefore
dependent on having both types present in the planting. Generally, the more
different cultivars in the planting, the greater the chance for
cross-pollination. Therefore if a planting is planned to have four trees, it
is recommended to plant four different cultivars. If the home or farm is
located near a large pecan orchard, cross-pollination is less of a concern since
pecan pollen is carried some distance by wind.
Table 1. New
pecan cultivars for homes & low input plantings. *
|
Cultivar |
Poll. Type |
Origin |
Nuts/lb. |
% Kernel |
Harvest Date (50% shuck
split) |
Scab Resistance |
|
Jenkins |
I |
Seedling
from North MS |
55
|
53 |
Oct 15 |
Excellent |
|
Syrup Mill |
I |
Seedling
from Mobile County, AL |
65 |
47 |
|
Excellent |
|
Carter |
II |
Seedling
from south MS |
45
|
50 |
Oct18 |
Good |
|
Gafford |
I |
Seedling
from Central AL |
56
|
50 |
|
Excellent |
|
McMillan |
II |
Seedling
from Baldwin County, AL |
56
|
51 |
Oct 20 |
Good |
*Much about
these cultivars is unknown, including their pollination type, cropping
regularity, and resistance to aphids. They are still under evaluation and have
not been released by any university or breeding program. We do recommend them
at this time, because their scab resistance is generally very good. Other
problems may emerge upon further evaluation.
Table 2. Old pecan cultivars recommended for homes or low-input plantings
|
Cultivar |
Poll. Type |
Nuts per pound |
Kernel percent |
Scab Resist. |
Downy Spot Resist. |
Fungal Leaf
Scorch Resist. |
Black Aphid Resist. |
|
Candy |
II |
72 |
47 |
Good |
? |
? |
Good |
|
Curtis |
II |
85 |
54 |
Very Good |
Good |
Good |
Good |
|
Elliott |
II |
72 |
54 |
Excellent |
Good |
Good |
Mod. |
|
Farley |
II |
60 |
53 |
Good |
Good |
Good |
Mod. |
|
Gloria Grande |
II |
48 |
48 |
Excellent |
Good |
Good |
Poor |
|
Owens |
I |
50 |
48 |
Fair |
? |
? |
Good |
Obtaining
These Cultivars
Of the cultivars presented here, Elliott and Farley, are usually
found at nurseries that grow or sell pecan trees. Curtis, Candy, Owens, and
Gloria Grande are less popular, and may have to be ordered from out-of-state
nurseries. Most of the cultivars in Table 1 are propagated currently by only a
few nurseries at this time. Contact nurseries one year in advance of planting
to place orders. Seedling trees can be budded or grafted 2 to 4 years after
planting. Graftwood for budding or grafting your own trees is available from
many sources, including the following:
Pecan
Graftwood Suppliers
Womacks Nursery, De Leon, Texas;
(254) 893-6497
Mize Pecan Co., San Antonio, Texas; (210)-679-7165
Mr. Wes Rice, Ponca City, Oklahoma; (580)-767-1195
Mr. Fred Stockbauer, Austin, Texas (512) 573-9992
Pecan
Nurseries which may have trees listed in Table 1.
Underwood Pecan Nursery, Foley, AL;
(334) 943-8056
Dellwood Pecan Tree Nursery, Foley, AL; (334) 943-8693
Clint Mayo, Grand Bay, AL (334) 865-4126
Standard Cultivar
Descriptions and Notes
Candy (MS Seedling) -
This cultivar is very prolific,
bearing large clusters of small nuts. The nut has a hard shell, but flavor is
excellent. Shuck split occurs very early (Sept. 25), and bird depredation can
be a major problem. Budbreak is very early and may freeze in north AL regions.
Curtis (FL Seedling)
- An old disease resistant cultivar
that produces good crops as a mature tree. The nut is small and ripens late,
but has good cracking and storing qualities. Tree form is open and upright,
good for home landscapes.
Elliott (FL
Seedling) - Despite small nut size,
market acceptance for this cultivar continues to grow, because kernel color and
taste is outstanding. It is slow to begin bearing. Scab resistance is
excellent, but yellow aphids and scorch mites can be severe. Budbreak is very
early and may freeze in north AL regions. Nuts ripen in early October.
Farley (FL Seedling)
- Good quality, medium to small,
blocky-shaped nut. Shells easily and has excellent, hickory nut flavor. Ripens
very late and is susceptible to birds and rodent predators. Production is low
to moderate, but consistent. Scab could be a problem in very wet years.
Gloria
Grande (SC Seedling) - This
cultivar is has excellent scab resistance; however, black aphids can be severe.
The nut is large and resembles Stuart, but ripens very late and is mediocre in
kernel quality. Kernel quality has been very poor in Baldwin County, and this
cultivar should be avoided by Gulf Coast growers.
Owens (MS Seedling) -
Owens is the only protandrous
cultivar in Table 2. Its early pollen shed makes it a good pollinizer for many
cultivars. It bears medium to large nuts, with thick shells. Kernel quality is
generally good, but it tends to produce excessive crops in some years with low
quality. Scab could be a problem in very wet years.
New Cultivar Descriptions
Jenkins (MS
Seedling) - This cultivar has a large
nut and appears to be an excellent tree with regard to pest resistance. Nut
quality is outstanding. Nuts resemble Desirable, except a little smaller.
Susceptible to Zonate leafspot. Estimated harvest date of October 15. Jenkins
Paper
Syrup Mill
(AL Seedling) - This cultivar has
produced good yields, is extremely vigorous, and retains foliage well. Kernels
are bright.
McMillan
(AL Seedling) - This cultivar has
been highly productive and consistent, and scab damage on nuts has been very
light. Estimated harvest date of October 20.
Carter
(MS Seedling) - This cultivar has an
estimated harvest date of October 18, and produces a large nut. Veins have been
visible on kernels in some years.
Gafford
(AL Seedling) - This cultivar
produced a good quality nut, and has excellent resistance, but little is known
on long-term yield potential.
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Figure 1. Calendar Sequence of Pollen Shed and Pistil Receptivity |
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Some data obtained from Dr.
Ray Worley, Coastal Plain Experiment Station; Tifton, GA. |
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Elliott (II) |
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Farley (II) |
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Gloria Grande (II) |
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