2014
Defining potassium nutritional requirements for soybeans with indeterminate growth habit
Contributor/Checkoff:
Category:
Sustainable Production
Keywords:
Industry outreachResearch Coordination
Lead Principal Investigator:
Nathan Slaton, University of Arkansas
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
Institution Funded:
Brief Project Summary:

Previous research has shown trifoliate leaf K concentration at the R1-R2 growth stage to be highly correlated with yield and soil test K for soybean varieties with a determinate growth habit (Maturity Group 5, MG5), but not for indeterminate varieties (MG4). Tissue K concentrations of MG4 varieties at the R2 stage is often lower than the 1.5-1.8% threshold defining low and deficient leaf K concentrations. Our mission is to determine a specific growth stage, critical leaf K concentration, and sampling protocol for indeterminate varieties that are highly correlated with soybean yield potential. We believe the problem with the current critical leaf K concentration that indeterminate varieties...

Unique Keywords:
#research coordination
Information And Results
Project Deliverables

Final Project Results

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