Effect of Nano Fe-Chelate, Fe-Eddha and FeSO4 on Vegetative Growth, Physiological Parameters and Some Nutrient Elements Concentrations of Four Varieties of Lettuce (Lactuca sativa L.) In NFT System

• Published in: Journal of plant nutrition Vol. 38; no. 14; pp. 2176 - 2184
• Main Authors: Roosta, Hamid R, Jalali, Musa, Ali Vakili Shahrbabaki, Seyyed Mohammad
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 06.12.2015; Taylor & Francis Ltd
• Subjects: acetic acid; alkalinity; carotenoids; chlorophyll; hydroponics; Iron; Lactuca sativa; leaves; Lettuce; manganese; nano-fertilizer; nutrient deficiencies; nutritional status; Physiology; plant pigments; sugars; sulfates; vegetative growth; water; zinc
• ISSN: 1532-4087; 0190-4167; 1532-4087
• DOI: 10.1080/01904167.2015.1043378

In order to investigate the effects of different iron (Fe) sources (nano iron (Fe)-chelate, Fe- ethylenediamine-di(o-hydroxy phenyl acetic acid (EDDHA) and iron (II) sulfate (FeSO ₄)) on lettuce (Lactuca sativa) growth in alkaline solutions, an experiment was arranged in hydroponic system. This study showed that leaf Fe content and overall plant growth was significantly increased by Fe-chelate application, and the highest values of leaf Fe, plant pigments and vegetative growth were recorded in plants treated with nano Fe-chelate. The lowest Fe, chlorophyll, carotenoids and soluble sugars in leaves were observed in FeSO ₄ treatment. There were no difference in soluble sugars contents of plants between nano Fe-chelate and Fe-EDDHA treatments. Fertilization of lettuce plants with different Fe-chelate sources had a beneficial effect on the manganese (Mn) and zinc (Zn) uptake in plants. It is concluded that application of chelated form of Fe (especially nano Fe-chelate) must be performed in hydroponic system with alkaline water, to overcome Fe deficiencies and to make better nutritional status.