Response of Wheat Crop to The Application of Different Micronutrients and Their Influence on Growth and Development

Abstract

Micronutrients are required in small quantities but play essential roles in wheat growth, physiological processes, yield formation, and grain nutritional quality. Deficiencies of zinc (Zn), iron (Fe), manganese (Mn), copper (Cu), and boron (B) can restrict plant development and reduce productivity, particularly in soils with limited nutrient availability. This study summarizes the roles of major micronutrients in wheat growth and development, with emphasis on their effects on germination, root development, tillering, biomass production, photosynthesis, nutrient uptake, enzyme activity, yield components, and grain quality. The study also evaluates major approaches for micronutrient management, including soil application, seed treatment, foliar application, and integrated fertilization. Particular attention is given to the influence of soil properties, environmental conditions, wheat genotype, fertilizer dose, application timing, and application method on micronutrient availability and utilization efficiency. Recent evidence indicates that balanced micronutrient management can improve wheat physiological performance, yield components, grain yield, and nutritional value, while agronomic biofortification offers an important strategy for increasing grain Zn and Fe concentrations. However, the effectiveness of micronutrient application varies considerably with soil conditions, climatic stresses, genotype, and management practices. Therefore, site-specific nutrient management, soil testing, genotype selection, and stage-specific application are essential for improving micronutrient-use efficiency. Integrating micronutrient management with wheat breeding and precision agriculture can contribute to sustainable productivity and improved grain nutritional quality. Future research should focus on genotype-specific micronutrient requirements, nutrient interactions, precision application technologies, and climate-resilient strategies for efficient wheat production and enhanced food and nutritional security.