The "Fertilizer Transparency Act of 2026" mandates reporting on fertilizer and fertilizer product prices and quantities by manufacturers and wholesalers. The program aims to provide farmers and market participants with accurate market information, promote competition, and aid informed marketing decisions. The act exempts cooperatives and non-manufacturer retailers from mandatory reporting and ensures confidential reporting mechanisms. The Secretary of Agriculture will make the reported information available to the public, conduct competitive analysis, and maintain retail fertilizer price surveys. Additionally, the act includes measures for confidentiality protection and regular review of reported information. It emphasizes that it does not modify antitrust laws.