Growers are looking for additional ways to verify that fertilizer applications are meeting soybean nutritional needs and maximizing yield. Plant tissue analysis is becoming routine. However, the interpretation of these laboratory concentrations needs to be reassessed, since most were derived in the 1960s. Objectives of this project include: updating soil test and leaf phosphorus concentration interpretations; evaluating variability of soybean leaf nutrient concentrations with on-farm strip trials; document and understand leaf nutrient concentration changes through the growth stages of 10 soybean varieties; and creating outreach materials to provide the updated nutrient sufficiency ranges and interpretations, and a how-to video for taking a soybean leaf sample for nutrient analysis.Key Benefactors: farmers, agronomists, plant pathologists, scientists, extension specialists
The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.