WUXAL Tapa Negra is a highly concentrated NPK foliar fertilizer containing micronutrients—with a focus on boron and zinc—designed to improve crop yield and quality. It is a balanced nutrient suspension formulated to support plant growth under conditions of physiological stress. By optimizing plant nutrition, WUXAL Tapa Negra also has a stabilizing effect on plant health. It contains all WUXAL additives as stickers and wetting agents to maximize efficiency and regulates the pH of the spray mixture.