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Abstracts ofPresentations at the2016 Soybean CystNematode Conference Krishna AcharyaAddison PlaisanceGuiping Yan2016 год

Abstracts of Presentations at the 2016 Soybean Cyst Nematode Conference
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Аннотация: Host resistance and crop rotations are common practices for managing soybean cyst nematode (SCN), Heterodera glycines, in North Dakota, but the role of cover crops in SCN management is not fully understood.To evaluate this, twenty-one cover crop species and cultivars plus two susceptible soybean cultivars were planted in two naturally infested soils (initial population densities: 5,000 and 10,000 eggs/100 cm 3 ) from Richland and Cass counties, ND, in a growth chamber at 27°C for 35 days.Host range was evaluated based upon numbers of SCN white females on roots and the effect on population reduction was determined by comparing initial and final SCN egg population densities.Out of the tested crops, SCN white females were not found on roots of annual ryegrass, camelina, carinata, ethiopian cabbage, faba bean, foxtail millet, radish, rape dwarf essex, red clover, sweet clover, triticale, and winter rye.Cowpea, crimson clover and turnips showed very few white females ranging from 1 to 13, but Austrian winter pea, field pea, forage pea and hairy vetch showed some levels of reproduction (white females: 13 to 173).SCN reproduced less in all tested cultivars compared to the susceptible checks (827 to 1,251).All the tested cover crops reduced the SCN population except field pea (Aragon) and forage pea which increased the population from 10,000 to 18,240 eggs/100 cm 3 soil for Aragon and to 25,560 eggs/100 cm 3 for forage pea.Cover crops which were non-host or poor host will be evaluated in the microplot study for reducing SCN populations.
Год издания: 2016
Авторы: Krishna Acharya, Addison Plaisance, Guiping Yan, Ed Anderson, Thomas J. Baum
Издательство: American Phytopathological Society
Источник: Phytopathology
Ключевые слова: Nematode management and characterization studies, Soybean genetics and cultivation, Legume Nitrogen Fixing Symbiosis
Другие ссылки: Phytopathology (PDF)
Phytopathology (HTML)
PubMed (HTML)