Project Details:

Title:
Correction of potassium deficiency in no-till and strip-till soybean production

Parent Project: This is the first year of this project.
Checkoff Organization:Kansas Soybean Commission
Categories:Soil and tillage management
Organization Project Code:
Project Year:2009
Lead Principal Investigator:David B Mengel (Kansas State University)
Co-Principal Investigators:
Keith Janssen (Kansas State University)
Keywords:

Contributing Organizations

Funding Institutions

Information and Results

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Project Summary

The researchers will determine if the observed K deficiencies seen in soybeans under no-till and strip-till in the region are impacting soybean yields, if the deficiencies seen are reducing yields, and if they can be corrected through the additions of starter fertilizer where the soil test level is above the critical level. Experiments will be conducted to determine if broadcast applications of K or combinations of band and broadcast applications will correct the observed deficiencies when soil test levels are below the current critical level. Since the problem cannot be corrected with current practices, we will determine if deep banding under the row and/or building soil test levels are higher than the current critical soil test level of 125-135 ppm exchangeable K will correct the problem.

Project Objectives

1. Determine if the observed K deficiencies seen in soybeans under no-till and strip-till in the region are impacting soybean yields.
2. Determine if deficiencies seen are reducing yields, determine if they can be corrected through the additions of starter fertilizer where the soil test level is above the critical level.
3. Determine if broadcast applications of K or combinations of band and broadcast applications will correct the observed deficiencies when soil test levels are below the current critical level.
4. Determine if deep banding under the row and/or building soil test levels are higher than the current critical soil test level of 125-135 ppm exchangeable K will correct the problem.

Project Deliverables

Progress of Work

Final Project Results

Benefit to Soybean Farmers

Performance Metrics

Project Years