Iron is an important micronutrient needed in small quantities by all plants. Many vital processes such as the production of chlorophyll and nitrogen fixation depends on iron. Iron deficiency is among the most widespread nutritional deficiencies.
Iron is largely sufficient in most soil; however, its availability varies with soil conditions throughout the year and on the plants themselves. Moreover, iron becomes unabsorbable when the soil is not acidic enough.
Because iron chlorosis appears mainly in crops grown on calcareous soil, it is often called lime-induced chlorosis.
Iron is considered as an immobile micro-element, meaning that signs of iron deficiency first manifest during the stage of new growth. The main symptom will be Inter-venial chlorosis of new leaves, which means that the tissue between the veins turns yellow in color, while the veins remain green.
un fertilizante de hierro efectivo para corregir la clorosis del hierro es el FeEDDHA, conocido como Sequestrene 138 y funciona mejor cuando se aplica a las raíces a través de un sistema de riego. El hierro secuestrado está disponible para las plantas sin ajustar el pH del suelo, lo cual no es el caso del sulfato de hierro, otro compuesto que se usa para tratar la deficiencia de hierro.