Testing a Bovine Blood-Derived Compound as Iron Supply on Cucumis sativus L

• Published in: Agronomy (Basel) Vol. 10; no. 10; p. 1480
• Main Authors: Di Foggia, Michele, Yunta-Mezquita, Felipe, Tugnoli, Vitaliano, Rombolà, Adamo Domenico, Lucena, Juan José
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.10.2020
• Subjects: Acetic acid; Aggregation behavior; Amino acids; Backup software; biochemical responses; Blood; blood-derived fertilizers; By products; Chelates; Chelating agents; Chlorophyll; Cucumbers; Cucumis sativus; Edetic acid; EDTA; Ethylenediamine; Ethylenediamines; Ethylenediaminetetraacetic acids; Exudates; Exudation; Fe-chelate reductase; Fertilizers; Heme; Hemoglobin; Iron; iron deficiency; Nutrient deficiency; Nutrition; pH effects; Reduction; root exudates; Roots; Philippines
• ISSN: 2073-4395; 2073-4395
• DOI: 10.3390/agronomy10101480

A new powder formulation obtained from bovine blood (Fe-heme) was tested on cucumber (Cucumis sativus L.) to investigate its effectiveness as iron supply in comparison with two synthetic iron-chelates fertilizers: ethylenediaminetetraacetic acid (EDTA/Fe3+) and ethylenediamine-N’N’-bis(2-hydroxyphenyl acetic acid) (o,oEDDHA/Fe3+). Green stressed cucumber plants were evaluated in their recovery (SPAD index and weight variations) and to test the iron reduction capacity of the roots at pH 7.5 and 6.0 using each iron treatment as iron supply. The blood-derived product showed similar effects on decreasing iron-deficiency symptoms: SPAD increments and the weights of plants were similar. Noteworthy, the average of Fe3+ reduction capacity in roots was higher for EDTA/Fe3+, while it was similar for o,oEDDHA/Fe3+, and Fe-heme at pH 7.5. Fe-heme showed a complex behavior due to aggregation and low solubility at pH 6 and showed an unexpectedly high contribution of root exudates to iron reduction.