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• Agrian
• Agrotain International
• AgXplore International
• Crop Data Management Systems
• DLF International
• Helena Chemical
• Kirby Agri
• Martin Limestone
• Pennsylvania Department of Agriculture
• Penn State Extension
• Potash Corp of Saskatchewan
• Timac AGRO USA
• Winfield Solutions
• Yara International
• Yara Liva
• Channel
• Eddie Mercer Agri-Services, Inc.