Role of foliar application of micronutrients (B, Zn and Fe) in vegetables

Proper plant nutrition is essential for successful production of vegetable crops in open and also under protected conditions. Integrated supply of micronutrients with macronutrients in adequate amount and suitable proportions is one of the most important factors that control the plant growth in vegetable crops. Micronutrients are involved in all metabolic and cellular functions. Plants differ in their need for micronutrients. Major functions in vegetable production of mineral micronutrients zinc (Zn), boron (B) and iron (Fe) that are generally accepted as essential for all higher plants are reviewed in the paper.