Two new navy lines look promising. These experimental cultivars offer significantly better yield potential in the 90-100 day maturity range than current standards. They are in advanced yield trials. Seed is being increased this winter with a possible release in two or three years. Several advanced pinto bean lines show promise too. Ken Grafton, NDSU dry bean breeder
NDSU 2000-2001 Navy Bean Performance Testing Locations: Hatton and Forest River, ND
Dry bean production topics and research updates were again an important part of the Northarvest Bean Growers Association annual Bean Day program. Heres a rundown on this years production-oriented presentations:
Luis del Rio Mendoza
Calcium applied alone or with fungicide hasnt significantly improved dry bean yields or reduced the incidence of white mold in several years of North Dakota State University trials. Researchers repeatedly compared calcium alone, and with half rates of fungicide under varying levels of disease pressure. A full application of fungicide remains the best treatment. Plant pathologists plan to move on and investigate other potential methods of control. Luis del Rio Mendoza, NDSU dry bean plant pathologist.
Anthracnose remains a serious threat to spread in 2002. If you dont want to risk major losses, make sure the seed you buy or condition this year is anthracnose-free. Lab tests are available from the North Dakota State Seed Department. The best defense is to plant certified seed and seek documentation that seed produced in areas known to have Anthracnose (southern Michigan, Ontario, Manitoba and northern North Dakota) has been tested and certified Anthracnose-free. Bin-run seed poses the highest risk because Anthracnose may have been present in fields but not identified. Anthracnose will develop if the seed is infected and the weather is cool and wet. Once on leaves, the disease moves from plant to plant by water splashes. Dont cultivate, scout or spray dry bean fields when leaves are wet. Duane Berglund, NDSU extension agronomist.
Improved harvesting, drying and storage methods may help maintain dry bean color. Harvesting dry beans at higher moisture and drying them with natural air is emerging as a way to produce a brighter-colored bean. Research over the past several years shows that beans darken more quickly if storage temperatures are above 40 degrees F or if beans are exposed to light. Ken Hellevang, NDSU extension agricultural engineer.
The EPA may approve a Section 18 label for Reflex use in Minnesota and North Dakota in 2002. Because Reflex has a PPO inhibitor mode of action, it can be used effectively to control ALS-resistant weeds. Reflex will control ragweed, waterhemp, nightshade, kochia, pigweed, cocklebur, mustard and smartweed well. It is weaker on lambsquarters, buckwheat
and biennial wormwood. At the .75 pint per acre rate, the cost will be approximately $7.50 per acre.
Spartan looks like a good possibility for dry beans. NDSU research indicates that this soil-applied PPO disrupter will control a broad spectrum of annual broadleaves. Spartan also provides 6-8 weeks residual control under certain conditions. Research and documentation for label application continue.
Since EPA has not yet approved Roundup for use as a desiccant, research is beginning on several other possible products. They include Liberty, Cobra, Aim, Spartan, Valor and several experimentals. Rich Zollinger, NDSU extension weed specialist.