Iron Nutrition of Plants in Calcareous Soils

doi:10.1016/S0065-2113(08)60326-0

Advances in Agronomy

Volume 35, 1982, Pages 217-240

https://doi.org/10.1016/S0065-2113(08)60326-0 Get rights and content

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This chapter reviews iron nutrition of plants in calcareous soils. Many agricultural crops worldwide, especially in semiarid climates, suffer from iron deficiencies. Deficiencies are usually recognized by chlorotic, or yellowed, intervein areas in new leaves and are typically found among sensitive crops grown in calcareous soils. Iron deficiency in extreme cases may lead to complete crop failure. Two principal methods of treating iron deficiencies are accepted. Spraying foliage with inorganic salts has been shown to be of benefit, but often gives spotty results because of, limited penetration of iron into leaves. Also, repeated treatments are required during the course of canopy development. Soil treatment with synthetic chelates, principally FeEDDHA (ethylenediaminedi–o–hydroxyphenylacetic acid), has been found to be an unqualified success, but for the drawback of their high costs. Iron deficiency in plants causes chlorosis of leaf tissue because of inadequate chlorophyll synthesis. In a healthy plant, 60% of all leaf iron is concentrated in chloroplasts. The exact role of iron in chlorophyll synthesis is not certain but there is evidence of the involvement of ferrous iron in the condensation of succinic acid and glycine to form γ-aminolevulinic acid. Magnesium is incorporated into the molecule to form chlorophyll, possibly with the catalytic action of iron.

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Iron Nutrition of Plants in Calcareous Soils

Publisher Summary

Geoderma

Plant Soil

Physiol. Plant.

Plant Soil

Soil Sci. Plant Nutr (Tokyo)

Z. Pflanzenernaehr. Bodenkd.

J. Environ. Qual.

Soil Sci. Soc. Am. J.

Nature (London)

J. Agric. Res.

Hortic. Sci.

Agron. Trop. Paris

Commun. Soil Sci. Plant Anal.

Soil Sci. Soc. Am. Proc.

Soil Sci.

Cornell Univ. Agric. Exp. Stn. Mem.

Soil Sci. Soc. Am. Proc.

Soil Sci.

Physiol. Plant.

Congr. Soil Sci., 7th Madison, Wisc.

Can. J. Plant Sci.

Plant Soil

Can. J. Soil Sci.

“Organic Sequestering Agents.”

Plant Physiol.

Soil Sci.

J. Plant Nutr.

Sci. Hortic.

J. Agric. Sci.

J. Soil Sci.

Soil Sci.

Tech. Bull. Min. Agric, Fish. Food

Physiol. Plant.

Plant Soil

Ann. Agron.

Plant Physiol.

Agron. Abstr.

Agron. J.

Z. Pflanzenernaehr. Bodenkd.

Soil Sci. Soc. Am. Proc.

Mysore J. Agric. Sci.

Proc. Am. Soc. Hortic. Sci.

Agrochimica

Hortic. Sci.

M. Sc. thesis

Neth. J. Agric. Sci.

Plant Physiol.