1. EDTA Chelated:
The EDTA chelating agent allows the elements to be entirely assimilated and moves into the plant’s tissues systemically.
2. EDDHA Chelated:
The EDDHA chelate are organic molecules which property is to be able to bind with iron molecules and to protect the oxidation. This permits to bring iron directly to the plants roots. The EDDHA chelate are of various forms (isomeric), the ORTHO/ORTHO forms and the ORTHO/PARA forms. The ORTHO-ORTHO form resists much longer to degradations caused by the high soil pH and by the high contents in active calcium. The ORTHO-PARA forms release the iron more rapidly. The ORTHO/ORTHO forms increase the efficiency remanence of the product.