2020
Improving Agronomic Management of Oklahoma Soybeans
Home
Contributor/Checkoff:
Oklahoma Soybean Board
Category:
Sustainable Production
Keywords:
AgricultureCrop protectionHerbicide
Parent Project:
Improving agronomic management of Oklahoma soybeans: Weed management and improved productivity
Lead Principal Investigator:
Josh Lofton, Oklahoma State University
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
Oklahoma Soybean Board
$19,800
Institution Funded:
Oklahoma State University
$19,800
Brief Project Summary:

In Oklahoma, soybean productivity is different across the state, and understanding management practices within each region will benefit the soybean industry statewide and improve productivity at the local level. Various pests also influence soybean production, affecting yields and seed quality. To overcome this issue, quality IPM must be paired with agronomic management to successfully control this issue in Oklahoma soybeans. Project objectives include determining the impact of pesticide and agronomic input management on soybean seed, yields and quality; valuation of cover crops to help manage weed populations; and determining the suitability of varying soybean maturity groups and planting dates across Oklahoma soybean production regions.

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

Information And Results
Project Deliverables

Four major studies will be implemented to evaluate the above objectives. To evaluate the effect of pesticide applications on soybean yield and quality, three studies will be developed in the three major crop production areas of the state (i.e. Northeast, North Central, and Southeast). Five insecticide application periods, two desiccation treatments and three harvest management techniques will be evaluated. Insecticide applications will be made based on scouting through a critical growth stage (R1-4, R1-R5, R1-R6, R1-R7, and R1-R8). Chemical applications will vary depending on insects observed. At maturity, plots will be either applied with or without desiccation, using paraquat. Each insecticide and desiccation will include three plots per replication. Initial plots will be harvested as soon as moisture allows. Following initial harvest, remaining plots will be harvested 10 and 20 days following. Within these delayed periods either a rainfall event or irrigation event will occur to simulate delayed harvest due to environmental conditions. Grain yield, oil and protein, and quality will be evaluated for each plot.

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.