Pecan cultivars
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'Waco' (Nut Photo) 'Waco' originated from a controlled cross ('Cheyenne' X 'Sioux') made in Brownwood, Texas, in 1975. It was tested as 75-5-6 and released cooperatively by USDA-ARS and the Texas Agricultural Experiment Station in 2005. The nut is elliptic with an obtuse apex, an acuminate (pointed) base and is laterally compressed in cross section. There are 53 nuts/lb. (up to 38 nuts/lb), with 56% kernel. Kernels are cream to golden in color, with wide, non-trapping dorsal grooves and rounded dorsal ridge. Nuts shell out easily into full halves and are very attractive. Bud growth commences shortly before 'Desirable' in the spring. Leaves are characterized by large leaflets, a feature common to other members of this cross family ('Nacono' and 74-5-60). Trees are protandrous, with early to mid-season pollen shed and mid-season pistil receptivity (similar to 'Caddo' and 'Cheyenne'). 'Waco' should be a good pollenizer for, and be well pollenized by 'Wichita', 'Choctaw', 'Hopi', and 'Kanza'. 'Waco' is more susceptible to pecan scab (Fusicladosporium effusum) than 'Desirable' and is moderately susceptible to the yellow aphid complex. 'Waco' has medium precocity, similar to 'Pawnee'. Trees are comparable in vigor to 'Desirable', and are less vigorous than 'Nacono'. Tree form is improved over the willowy, weak growth of 'Cheyenne'. Nuts per cluster are comparable to 'Desirable', and less than 'Nacono' or 'Pawnee'. Time of nut maturity is mid-season at College Station, Texas (October 11-21), or about eight days before 'Desirable'. 'Waco' should perform well in the western pecan region.

LJ Grauke , Research Horticulturist &Curator
USDA-ARS Pecan Genetics
10200 FM 50
Somerville, TX 77879
fax: 979-272-1401

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