SAES-422 Multistate Research Activity Accomplishments Report
Sections
Status: Approved
Basic Information
- Project No. and Title: NC_old1197 : Practical Management of Nematodes on Corn, Soybeans and Other Crops of Regional Importance
- Period Covered: 10/01/2012 to 09/01/2013
- Date of Report: 08/21/2013
- Annual Meeting Dates: 07/18/2013 to 07/18/2013
Participants
[Minutes]
Accomplishments
Agronomic traits and resistance were evaluated for more than 2,700 combinations of soybean genotype and SCN population in greenhouse and field trials across the region.
SCN populations were screened for virulence phentoypes in all states, using a common protocol.
Surveys for SCN and other nematodes were conducted in Indiana, Kansas, Minnesota, Ohio, Wisconsin, and Ontario, Canada.
Nematicidal seed treatments commercially available for corn and soybean were evaluated at more than 20 sites in five states and Canada in 2012 for their impact on yield and nematode population densities.
The population dynamics of Root Lesion nematodes on corn was studied in three states.
The relationship between SCN and two fungal pathogens was studied for soybean and between Root Lesion Nematode and one fungal pathogen for corn.
Data on the types and numbers of pest nematodes detected in samples submitted for diagnosis were collected in all states.
A cumulative risk index for all pest nematodes associated with corn was developed for farmers.
Data on SCN reproduction on multiple soybean genotypes was collected throughout the region.
Impacts
- Nematodes are invisible to the naked eye and cause nondescript symptoms so yield losses due to pest nematodes are often credited to other conditions. Surveys and diagnostic activities increased awareness of nematode pests of corn and soybean in the region, as evidenced by an increase in the number of samples submitted for nematode assay.
- Coordinated and standardized screening of SCN populations throughout the region provided valuable information about the frequency of resistance-breaking populations of SCN, increasing awareness among plant breeders and industry about the current and changing needs of soybean producers farming SCN-infested land.
- Information evaluating the performance of commercial soybean varieties in fields infested with SCN was distributed widely throughout the region. This information benefited producers in selecting varieties and practices that best suit their production systems.
- New nematicidal seed treatments recently entered the market and there is a need for unbiased information in the marketplace. Evaluations of commercial products and alternative cultural practices increased producers knowledge and understanding of the merits and limitations of using pesticides to manage pest nematodes.
- Advice about sampling and estimates of risk due to nematode pests have traditionally varied from state to state. Coordinated messaging and development of a standardized risk index increased knowledge about the status of nematode pests in the region among the agricultural professionals.
- Members of NC1197 represent the nematology expertise of the North Central Region. Face-to-face discussions and brainstorming at an annual meeting have a synergistic impact on the amount and quality of information that is passed to stakeholders in member states.