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ARS Home » Midwest Area » Urbana, Illinois » Soybean/maize Germplasm, Pathology, and Genetics Research » Research » Publications at this Location » Publication #164213
Title: RESPONSE OF SELECTED HETERODERA GLYCINES POPULATIONS TO N-VIRO SOIL TREATMENT

Author
item MELAKEBERHAN, HADDISH - MICHIGAN STATE UNIV
item NOEL, GREGORY

Submitted to: Nematology
Publication Type: Abstract Only
Publication Acceptance Date: 4/19/2004
Publication Date: 8/7/2004
Citation: Melakeberhan, H., Noel, G.R. 2004. Response of selected Heterodera glycines populations to N-Viro soil treatment. Journal of Nematology. 36:333-334.

Interpretive Summary:

Technical Abstract: The worldwide geographic distribution of Heterodera glycines demonstrates broad adaptation to a range of environmental conditions. In addition to environmental adaptation, H. glycines's high degree of parasitic variability presents multiple challenges to its management. However, it is unknown if H. glycines populations' parasitic variability is related to soil conditions. The purpose of this project was to test how H. glycines races 1, 2 and 3 respond to 0, 5 and 20 g of N-Viro Soil® (NVS) per 500 cm3 of sandy loam soil in two concurrently conducted greenhouse experiments (25 ± 2 oC) in 2002. NVS is a recycled municipal biosolid product used as a soil amendment in a range of conditions. Each pot, containing a 2-week-old H. glycines-susceptible Round-up Ready® soybean seedling (DSR-221, Dairy Land Seed Co.), was infested with either water (control) or 10,000 eggs consisting of 60 to 66% late pretzel (differentiated) stage of embryogenesis. Each experiment consisted of 48 units (4 nem 3 NVS 4 reps) and lasted 2 months. There was no clear effect on cyst development or eggs per cyst due to NVS treatment. However, the 20 g NVS/500 cm3 soil decreased the total numbers of H. glycines cysts and other life stages of all three populations in roots more than the other treatments in both experiments. Race 3 was least affected and race 1 the most affected by NVS treatment in both experiments. The results suggest that H. glycines populations differ in their adaptation to soil environments.