Field evaluation of inorganic and chelated iron fertilizers as foliar sprays and soil application

Reed, David; Lyons, Calvin G.; McEachern, George Ray

doi:10.1080/01904168809363894

Cited by 35 publications

(20 citation statements)

References 13 publications

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“…Although only field-tested materials from reliable companies with adequate labeling instructions should be used for any fertilizer material, injuries from foliar sprays are relatively common and caution is particularly important with this management approach. (Álvarez-Fernández et al, 2002;Lindsay, 1974;Reed et al, 1988;Sahu et al, 1988). In addition to the impact of leaching, decomposition, and inactivation, the effectiveness of synthetic chelates is influenced by factors such as amount and type of clay and salt in the soil (Siebner-Freibach et al, 2004;Vempati and Loeppert, 1988).…”

Section: Chelated and Complexed Fe Fertilizersmentioning

confidence: 90%

“…Liquid solutions containing low rates of chelated or non-chelated Fe are often used to temporarily correct Fe deficiencies (Anderson, 1982;Godsey et al, 2003;Goos and Johnson, 2000;Mengel, 1995;Pestana et al, 2001;Randall, 1981;Reed et al, 1988;Zaiter et al, 1992). If these materials are applied in a fashion that results in adherence to leaf surfaces, the Fe is absorbed for use by the plant (Mengel, 1995).…”

Section: Foliar Spraysmentioning

confidence: 98%

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Iron Nutrition in Field Crops

Hansen

Hopkins

Ellsworth

et al. 2006

Iron Nutrition in Plants and Rhizospheric Microorganisms

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Abstract:Iron (Fe) deficiency is a yield-limiting factor for a variety of field crops across the world and generally results from the interaction of limited soil Fe bioavailability and susceptible genotype cultivation. Iron deficiency broadly occurs across the world in soybean, peanut, dry bean, sorghum, and rice but sporadically under unique or specialized conditions with corn, wheat, and oat. In this chapter, soil properties associated with the expression of Fe deficiency in field crops are defined, and biochemical interactions that promote field observed Fe-deficiency problems are explored. Strategies examined for use with field crops where Fe deficiency is a concern include cultivar selection and screening for tolerance, fertilizer and cultural practices, lowering soil pH, foliar sprays, chelated and complexed Fe fertilizers, concentrated fertilizers, mixed cultivar and companion crop interactions, and management of irrigation and drainage, fertility and seeding practices. Finally, we identify areas where future research is needed.

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Section: Chelated and Complexed Fe Fertilizersmentioning

confidence: 90%

Section: Foliar Spraysmentioning

confidence: 98%

Iron Nutrition in Field Crops

Hansen

Hopkins

Ellsworth

et al. 2006

Iron Nutrition in Plants and Rhizospheric Microorganisms

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“…FeEDDHA (iron ethylene diamine-N,N¢-bis(hydroxy phenylacetic acid)) is among the most effective iron fertilizers on neutral and alkaline soils (Lucena et al 1992b;Papastylianou 1990;Reed et al 1988). Its agronomical performance has been intensively studied since the 1950s (Hill-Cottingham and Lloyd-Jones 1958;Kroll 1957;Wallace et al 1955).…”

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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“…Reed et al (1988) reported that soil application of F e E D D H M A was almost as effective as F e E D D H A for peach (Prunis persica L.) trees, resulting in slightly lower Fe concentrations and chlorophyll contents, but FeSO 4 and Fe citrate were ineffective in correcting Fe chlorosis (Table 4). While the price of F e E D D H M A is about half that of FeEDDHA, both Fe sources may not be economical for correction of Fe chlorosis of some crops.…”

Section: Soil Applicationsmentioning

confidence: 99%

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

Mortvedt

1991

Plant Soil

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Correction of Fe chlorosis is done mainly by foliar sprays because soil applications generally are ineffective, especially for annual crops. Inorganic Fe sources applied to soils react rapidly to forms which are not as available to plants; ferrous Fe is oxidized to the ferric form in well-aerated soils, especially as soil pH increases. Several synthetic chelates and organic complexes have been used with varying success, depending upon Fe source and rate, application method, plant species, and weather and soil conditions. Use of Fe-efficient cultivars is one method of counteracting Fe deficiencies in some species. Future prospects for improving control of Fe chlorosis lie more with development of Fe-efficient cultivars of Fe-sensitive species than with development of improved Fe fertilizers and methods of application. The techniques of molecular biology should be applicable to help solve this important plant nutrition problem, but priority has not been given to conduct this research at this time.

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Field evaluation of inorganic and chelated iron fertilizers as foliar sprays and soil application

Cited by 35 publications

References 13 publications

Iron Nutrition in Field Crops

Iron Nutrition in Field Crops

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

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

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