Investigation of Yield Limiting Nutrients for Wheat Productivity through Nutrient Omission Trials

Abstract

This study examines the effect of nutrient omission trials (NOTs) on wheat productivity in West shawa zone, Oromia region, with a focus on identifying yield-limiting nutrients. The experiments were conducted out over ten experimental sites. The experiment was laid out by randomized block design using farmers plot as replications per villages to determine the primary yield-limiting nutrients in wheat crop production using nutrient omission strategies and different nutrient sources. Different source of nutrients were used for the studies. Soil samples were tested to determine the initial nutrient levels, and agronomic data on growth, yield, and efficiency measures were obtained. The results show significant differences in wheat growth and production among treatments, indicating the significance of nitrogen and phosphorus in biomass and grain yield increase. The full NPKSZnB treatment consistently produced the highest yields, demonstrating the necessity of balanced nutrient management strategies specific to local agro-ecological conditions.