2018
Improving yields for double-crop soybean in Oklahoma production systems
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Contributor/Checkoff:
Oklahoma Soybean Board
Category:
Sustainable Production
Keywords:
Field management Nutrient managementSoil healthTillageYield trials
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Josh Lofton, Oklahoma State University
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
Oklahoma Soybean Board
$20,397
Institution Funded:
Oklahoma State University
$20,397
Brief Project Summary:

In Oklahoma, a large fraction of the total soybean acres are dedicated to double-crop production systems, where soybean is grown following wheat harvest. This system can be profitable due to two crops being harvested annually, and in many regions, the double-crop system can produce similar yields as a full-season system. But challenges arise that may limit productivity including a shortened season. Documentation has shown that harvesting wheat earlier and planting soybeans sooner can increase yields by up to 9%. The goal of this project is to identify the yield gap associated with double-crop production systems and management practices that can be utilized to optimize productivity and profitability of the double-crop system.

Key Benefactors:
farmers, agronomists, ag retailers, extension specialists

Information And Results
Project Deliverables

A supplemental set of field demonstration will be planted to complement the small-plot trial. These field demonstrations will compare the grower’s standard practice with an elevated management system. Most demonstrations will be just two treatments with a farmer practice and kitchen sink treatment; however, if the grower is interested in more treatments the PIs will accommodate. Trials will be harvested with the producers’ equipment and weighed using a weigh wagon. Subsamples will be collected from each location and measured for nutrients, oil concentration, and protein. The PIs will work with the producers to develop a budget for the farmer’s standard and the high application treatments for each location.

Final Project Results

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.