Dry Bean Research Yields New Varieties
March 28, 2008
NDSU Dry Bean Breeder, Juan Osorno, provided a review of variety research at NDSU at the recent 2008 Bean Day program.
Two new pinto varieties were released this year Lariat and Stampede. Osorno credits the development of these new varieties to former bean breeder Dr. Ken Grafton.
Osorno says having two new varieties provides growers the option to choose the variety that performs best in their conditions.
Lariat has shown that it has excellent yields especially when grown in good conditions, says Osorno. Stampede, on the other hand, is more stable across environments. While both varieties have an upright architecture, he says Stampede has a tendency for less floppiness.
Conditions of high fertility and water can cause some floppiness, which is normal on almost any variety, but has been especially noted in Lariat, given its upright structure. So my recommendation is dont go crazy with your nitrogen levels, says Osorno. We have also noticed that the previous crop has some influence on floppiness. For example, when you have sugarbeets the previous year, that nitrogen flush can affect the floppiness of the beans.
An important advantage of the upright architecture is white mold avoidance, says Osorno. Thats because air can move more freely through the plants and the rows, decreasing the air moisture which is one of the key environmental factors for development of the disease.
Direct harvesting is a hot topic right now. While both these varieties have this upright architecture which will certainly help for direct combining, it is just one component to consider, says Osorno. He says other factors must be taken into account as well, including machinery type, operator care, and soil type, among others.
Future Research for Lariat and Stampede
Osorno says additional research planned for Lariat and Stampede will include fertilization levels. We want to learn more about optimum fertilization levels so we dont lose that upright architecture, he says. We also plan to do additional research into plant densities and row spacing; direct-cutting versus conventional harvesting; white mold avoidance; and identification of the genes that control plant architecture.
Future Variety Releases
Osorno reported that a new navy variety (ND012103 named Avalanche) has been approved for release. He says the future of the variety will depend on market acceptance and industry participation given the way navy bean production is made (which is mainly based on contracts).
NDSU also has some other very promising pinto advanced lines, as well as black, red and pink experimental lines.
Two new kidney lines are showing some root rot resistance, but are unfortunately too late in maturity. Osorno says they are trying to cross these lines with earlier varieties to see if they can maintain the root rot resistance in an earlier maturing variety.
Work on anthracnose resistance in Eclipse also continues, says Osorno.
Variety development is a long-term process, says Osorno. Lariats first cross was made back in 1996 and Stampedes back in 1986. I am glad that Northarvest is aware that breeding is a long-term commitment.
Correction: The 2007 Dry Bean Performance VarietyTrials link was incorrectly listed in the 2008 Research & Resource Guide. The correct link to the Variety trials online is email@example.com