GNP Combo is a multi-micronutrient formulation, which is a rocket boon for all Crops. It is an excellent composition of the essential micronutrients i.e. Iron (Fe), Zinc (Zn), Manganese (Mn), Ferrous (Fe), Boron (B), and Magnesium (Mg). These micronutrients play a vital role in the physiological growth and biochemical metabolism of plants and improve the quality and yield of all crops.