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Environmentally benign Fe chelates in plant nutrition


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Ylivainio, Kari (2009) Environmentally benign Fe chelates in plant nutrition. PhD thesis, MTT Agrifood Research Finland . MTT Science, no. 5. MTT Agrifood Research Finland.

PDF - English

Online at: http://www.mtt.fi/mtttiede/pdf/mtttiede5.pdf


The low solubility of iron (Fe) depresses plant growth in calcareous soils. In order to improve Fe availability, calcareous soils are treated with synthetic ligands, such as ethylenediaminetetraacetic acid (EDTA) and ethylenediimonobis(2-hydroxyphenyl)acetic acid (EDDHA). However, high expenses may hinder their use (EDDHA), and the recalcitrance of EDTA against biodegradation may increase the potential of cadmium (Cd) and lead (Pb) leaching. This study evaluated the ability of biodegradable ligands, i.e. different stereoisomers of ethylenediaminedisuccinic acid (EDDS), to provide Fe for lettuce (Lactuca sativa L.) and ryegrass (Lolium perenne cv. Prego), their effects on uptake of other elements and solubility in soils and their subsequent effects on the activity of oxygen-scavenging enzymes in lettuce.

EPrint Type:Thesis
Keywords:biodegradation, calcareous soil, EDDHA, EDDS, EDTA, Fe deficiency, heavy metals, nutrient uptake, oxygen-scavenging enzymes
Subjects: Soil > Nutrient turnover
Research affiliation: Finland > Luke Natural Resources Institute
Related Links:http://www.mtt.fi/english
Deposited By: Koistinen, Riitta
ID Code:16610
Deposited On:30 Dec 2009 07:14
Last Modified:12 Apr 2010 07:42
Document Language:English

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