Correcting iron deficiencies in annual and perennial plants: Present technologies and future prospects

Mortvedt, J. J.

doi:10.1007/bf00011883

Cited by 70 publications

(24 citation statements)

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“…It reduces crop quality and depresses crop yields and hence causes economic losses. In particular in alkaline and calcareous soils, the bioavailability of iron can be severely limited (Chaney 1984;Mortvedt 1991). This mainly results from the low solubility of iron (hydr)oxides at high pH (Lindsay 1979), and from the elevated bicarbonate concentration in the soil solution (Boxma 1972;Mengel et al 1984;Shi et al 1993).…”

Section: Introductionmentioning

confidence: 99%

The behaviour of EDDHA isomers in soils as influenced by soil properties

et al. 2006

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FeEDDHA products are applied to correct iron chlorosis in plants and consist of a mixture of EDDHA isomers chelated to iron. In this study such mixtures have been divided into four (groups of) isomers: racemic o,o-EDDHA, meso o,o-EDDHA, o,p-EDDHA and rest-EDDHA. The physical and chemical properties of these isomers differ and hence does their ability to deliver Fe to plants. To come to a soil-specific iron fertilization recommendation, the behaviour of the EDDHA isomers in the soil needs to be understood. This behaviour has been examined in a soil interaction experiment as a function of time, and it has been related to soil properties. The isomer fractions remaining in solution can be ranked racemic

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Section: Introductionmentioning

confidence: 99%

The behaviour of EDDHA isomers in soils as influenced by soil properties

et al. 2006

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“…In calcareous soils, which constitute the major part of cultivated land, the soil solution does not provide more than 10% of the plant requirements for Fe (MORTVEDT, 1991). The total Fe content in these soils is high but the available fraction for the plant is insufficient.…”

Section: Introductionmentioning

confidence: 99%

Potential of the physiological response of pea plants (Pisum sativum L.) to iron deficiency (direct or lime- induced)

Ferhi¹,

Gharsalli²,

Abdelly³

et al. 2017

Biosci. J.

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Pea (Pisum sativum L.) is an important food crop in Tunisia, where calcareous soils represents the major limiting factor for agriculture production. In the present study a greenhouse experiment was conducted to assess the effects of direct and bicarbonate-induced iron deficiency on plant growth, chlorophyll fluorescence, photosynthesis, spad index and iron nutrition in two Tunisian pea genotypes (Pisum sativum L.). Plants were grown hydroponically and iron deficiency was induced for 3 weeks. Iron deficiency decreased all the above physiological parameters. The direct Fe deficiency is more drastic than bicarbonate-induced Fe deficiency. A close relationship between plant growth, photosynthesis and SPAD index was observed. Fe use efficiency for plant growth and Fe use efficiency for photosynthesis discriminates clearly the studied genotypes and seems to be the main reason of the tolerance of Kelvedon, as compared to Lincoln.

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“…However, Helms et al (2010) suggested that the tolerant variety is not necessarily the best selection, and is oft en better to plant a variety with high yield potential outside of zones with severe Fe defi ciency. Mortvedt (1991) found that adding FeSO 4 to the furrow increased yields and reduced chlorosis, however inorganic Fe sources quickly become unavailable, and may not be economical. Foliar Fe application, especially of chelated forms, has been inconsistent, being successful at some locations in reducing signs of chlorosis (Goos and Johnson, 2000) and increasing yield in some cases (Penas et al, 1990).…”

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confidence: 99%