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1. Evaluation of Soil Test Phosphorus Extractants and Tissue Analysis for Corn in KansasPhosphorus (P) is a critical nutrient for corn (Zea mays L.) productivity. Determining an appropriate concentration of soil test phosphorus (STP) and P tissue concentrations is a fundamental step needed to make accurate phosphorus management decisions. The main objective of this study was to evaluate the relationship of four different STP methods (Mehlich 3, Bray 1, Bray 2, and H3A) for corn production and determine critical P tissue concentration at different growing stages. The study... G. Roa, D. Ruiz diaz |
2. Exploring Long-Term Phosphorus Management Strategies for Optimizing Crops Yields in KansasPhosphorus (P) is a crucial nutrient for sustaining crop productivity, yet its scarcity often challenges agricultural endeavors. Recognizing the essential role of P fertilization in maintaining agricultural productivity, this study takes a multi-year approach to P management. It specifically delves into the intricate dynamics of long-term P placement, evaluating its impact on crop yield under varying rates and combinations. The primary objective is to discern the most effective phosphorus fertilization... D. Ruiz diaz, G. Roa |
3. Seeding Rate and Planting Configuration Affect the Interspecific Function of a Wheat-pea Cover CropCover crop species mixtures have potential to maximize overall biomass as well as net N contribution if temporary immobilization of available N by non-legume species can promote greater N fixation by legumes. The growth and ultimate function of legumes in cover crop species mixtures is often limited, however, by excessive competition with other species, particularly grasses, in the mix. The objective of this work is to identify optimum cool-season legume-grass cover... N. Nielsen, T. Hussain, R. Matschek, R. Noland, M. Mcculloch |