1. Defining Critical Tissue-Potassium Concentrations for Furrow Irrigated Corn Production

Potassium (K) is a critical nutrient for adequate corn (Zea mays L.) production, and tissue testing is an essential tool to ensure adequate K nutrition. Despite the important role of K in plant physiological functions, there are no calibrated critical tissue-K concentrations (TKc) for furrow-irrigated corn in Arkansas. This study aimed to define critical TKc values to maximize corn grain yield across different growth stages. From 2022 to 2024, twelve single-site-year and four long-term... J. Silva, G. Drescher, T. Roberts, J. Kelley, A. Smartt, Q. Sarfaraz, W. Rongey, G. Andrade leite mengez, M. Ramos do prado