In soil, manganese may be replaced by iron in the EDTA complex. For best results, use when iron levels in soil and irrigation water are low; if not, opt for foliar application. To apply, dissolve in water and administer near the plant's base or trunk. After application, water the area well to enhance nutrient uptake. It's crucial to apply the solution so it reaches the roots effectively. Lidoquest Manganese EDTA 13% dissolves completely in water, making it perfect for fertigation systems.