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Harvest, psyllids & new varieties the hot topics at Texas potato field day

Participants at the 25th annual Texas Potato Breeding and Variety Development Program field day learned that the harvest is underway, that psyllids are threatening unharvested fields and that new varieties are showing lots of promise.
(Courtesy: Texas A&M AgriLife)

Participants at the 25th annual Texas Potato Breeding and Variety Development Program field day learned that the harvest is underway, that psyllids are threatening unharvested fields and that new varieties are showing lots of promise.

These were some of the “headlines” shared with about 60 producers and researchers gathered recently for the 25th annual Texas Potato Breeding and Variety Development Program field day near Springlake in the Bruce Barrett potato fields.

Breeding new potato varieties

The potato breeding program is conducted by Texas A&M AgriLife Research and the Texas A&M University department of horticultural sciences under the direction of potato breeder Dr. Creighton Miller in College Station.

Miller has developed the program over the past 40 years to breed high-quality, high-producing potatoes for the fresh, chipping and storage markets. He conducts breeding trials near Springlake with Barrett Farms and near Dalhart with CSS Farms.

The Springlake trial includes 33,161 seedlings, while the Dalhart trial has 41,659 seedlings, totaling 74,820 seedlings from 463 different crosses, he said. Among those are the Texas Russet Norkotah strains and the newer Reveille Russet released last year.

“Our Norkotah strains tend to be very popular throughout the country,” Miller said, adding there are about 40 licensees throughout the U.S. and, collectively, these strains rank fifth in varieties approved for certification.

Dr. Creighton Miller:

“We are extremely proud of our Reveille Russet, which is growing in popularity.”

“It is a new russet we think will ultimately replace Norkotah because it stores better, has a higher percentage of marketable tubers and doesn’t bruise as easily.”

A potato variety screening trial shows varying levels of damage and indicates some psyllid resistance.
(Courtesy: Texas A&M AgriLife Communications photo by Kay Ledbetter)

Dr. Julien Levy, postdoctoral AgriLife Research associate, and Douglas Scheuring, senior AgriLife Research associate, both in Miller’s program in College Station, are screening a number of varieties from different sources to collect data on their insect resistance.

Dr. Julien Levy, postdoctoral AgriLife Research associate:

“If we can identify varieties with insect resistance and then cross those with varieties that are tolerant to the bacteria that causes zebra chip, we could get stronger resistance to the disease,”

“We have also been able to identify some varieties that are very susceptible to insects and diseases.”
Texas A&M AgriLife Research