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ARS Home » Midwest Area » Urbana, Illinois » Soybean/maize Germplasm, Pathology, and Genetics Research » Research » Publications at this Location » Publication #113767
Title: EFFECTS OF TILLAGE, ROW SPACING, AND ROTATION ON SOYBEAN YIELD AND SOYBEAN CYST NEMATODE REPRODUCTION

Author
item DONALD, PATRICIA - U OF MISSOURI, COLUMBIA
item Noel, Gregory
item MELAKEBERHAN, HADDISH - MICH ST U, E LANSING
item RIGGS, ROBERT - U OF ARK, FAYETTEVILLE
item ATIBALENTJA, NDEME - U OF ILL, URBANA
item FAGHIHI, JAMAL - PURDUE U, W LAFAYETTE, IN
item TYLKA, GREGORY - IOWA ST U, AMES
item HERSHMAN, DONALD - U OF KENTUCKY, LEXINGTON
item CHEN, SENYU - U OF MINN, MINNEAPOLIS
item NIBLACK, TERRY - U OF MISSOURI, COLUMBIA

Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: 6/25/2000
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Cultural practices such as tillage, row spacing, crop rotation, and rotation of nematode resistant soybean germplasm have not been examined to determine their effects and interactions on soybean cyst nematode (SCN), Heterodera glycines, population dynamics and soybean yield in SCN environments. These practices were studied at nine locations in the midwest and one Canadian Province. The SCN resistant soybean cultivars study out-yielded susceptible cultivars in most environments and in most years. The SCN reproduction rate was higher in susceptible than in resistant cultivars. In general, soybean yields were greater in no-till compared to conventional tillage, but the results varied by year and location. Reproduction of the nematode was also higher in no-till than in conventional tillage. Yields were higher in narrower rows compared to wider rows, but yield also varied by location and year. Macronutrient levels in plant tissue or soil showed no consistent change with tillage, row spacing, or soybean genotype treatment; however at some locations there was a differential uptake of calcium and magnesium between resistant and susceptible cultivars. Reproduction of SCN increased at one location after the same source of SCN resistance was planted for three consecutively years. The 3-year experimental period has not been long enough to establish the effect of rotating resistant germplasm sources on SCN numbers.