Project Details:

Investigating the effect of soil pH on soybean cyst nematode

Parent Project: Investigating the effect of soil pH on soybean cyst nematode
Checkoff Organization:Iowa Soybean Association
Categories:Nematodes, Insects and pests
Organization Project Code:
Project Year:2012
Lead Principal Investigator:Gregory Tylka (Iowa State University)
Co-Principal Investigators:
Keywords: Soybean Cyst Nematode (SCN)

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Information and Results

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Project Summary

The overall goal of the continuing project is to learn more about the nature of the consistent relationship between soybean cyst nematode (SCN) population densities (numbers) and soil pH.

Project Objectives

1.Determine if soil pH affects SCN reproduction on the soybean plant systemically.
2. Determine if the effect of soil pH on SCN population densities occurs after application of lime to soil.
3. Determine if soil pH affects how well the SCN resistance source PI 88788 suppresses SCN reproduction.
Preliminary greenhouse studies showed that after 30 days, there were 2?-5 times more SCN females and eggs on susceptible and resistant soybean varieties in the high pH soils (7.1) compared to the medium (6.0-7.1) or low (-6.0) pH soils. There were no differences between eggs per female among the three soils or two soybean varieties. These studies are being repeated to confirm the relationship.

Project Deliverables

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Final Project Results

Benefit to Soybean Farmers

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