Here at ISU, we have two management recommendation for SCN-infested fields. The recommendation given is based on the SCN egg population density (egg count) of the sample submitted.
Recommendation #1 - for fields with egg densities up to 5,000 eggs per 100 cc soil
We recommend that growers follow a six-year crop rotation scheme as illustrated below:
- 1st year - Nonhost crop (such as corn)
- 2nd year - 'PI88788' Resistant soybean
- 3rd year - Nonhost crop
- 4th year - 'Peking' Resistant soybean
- 5th year - Nonhost crop
- 6th year - Susceptible soybean
Recommendation #2 - for fields with egg densities greater than 5,000 eggs per 100 cc soil
- We advise that farmers grow several years of a nonhost crop, such as corn, and to sample after harvest in the fall. When the SCN egg population densities drop below 5,000 per 100 cc soil, we then feel comfortable recommending that the grower follow the six year rotation listed above.
