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Environmentally benign Fe chelates in plant nutrition

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

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

Summary

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 > MTT Agrifood Research
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
Status:Published

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