Effects of the Frequency of Iron Chelate Supply by Fertigation on Iron Chlorosis in Citrus

Bañuls, Josefina; Quiñones, Ana; Martín, Bernardo Calero; Primo‐Millo, Eduardo; Legaz, Francisco

doi:10.1081/pln-120024258

Cited by 11 publications

(9 citation statements)

References 10 publications

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“…In the Fe-EDDHMA and Fe-EDTA treatments, the SPAD-502 readings increased about 23% and 17%, respectively, for the rootstock Rangpur lime when compared to the control; while the FeSO 4 + citric acid treatment increased the readings in 27% for Swingle citrumelo and 24% for Poncirus trifoliata (Table 3). These results are similar to the ones obtained by Bañuls et al (2003), who showed that the iron application frequency partially affected the SPAD-502 readings during the growth period.…”

Section: Resultssupporting

confidence: 81%

“…After identification samples were dried in a forced air oven at 70ºC, until constant mass for dry matter determination. Samples were then ground in a Wiley type mill and analyzed for total iron concentration, by the dry ash method, according to the analytical procedures described in Bataglia et al (1983).…”

Section: Methodsmentioning

confidence: 99%

“…As a consequence, Fe-deficiency symptoms occur first in young leaves, being characterized by yellow leaves with green central and side nervures (Römheld, 2001). This affects the mineral nutrient content, the production and quality of fruit trees (Bañuls et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Iron sources for citrus rootstock development grown on pine bark/vermiculite mixed substrate

Ferrarezi

Bataglia

Furlani

et al. 2007

Sci. agric. (Piracicaba, Braz.)

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For high technology seedling production systems, nutrition plays an important role, mainly the fertigation with iron chelates to prevent its deficiency. This study had the goal of searching for alternative iron sources with the same nutrient efficiency but lower cost in relation to nutrient solution total cost. An experiment was carried out in 56 cm 3 -conic-containers tilled with a pine bark/ vermiculite mixed substrate using Fe-DTPA, Fe-EDDHA, Fe-EDDHMA, Fe-EDTA, Fe-HEDTA, FeCl 3 , FeSO 4 , FeSO 4 +citric acid plus a control, and the rootstocks Swingle, Rangpur, Trifoliata and Cleopatra, in a randomized complete block design, with four replicates. Seedlings were evaluated for height, relative chlorophyll index, total and soluble iron leaf concentrations. Cleopatra was the only rootstock observed without visual iron chlorosis symptoms. There was a low relative chlorophyll index for Rangpur, Swingle and Trifoliata rootstocks in the control plots, in agreement with the observed symptoms. High total iron concentrations were found in the control and Fe-EDTA plots, whereas soluble iron represented only a low percent of the total iron. The economical analysis showed the following cost values of iron sources in relation to the nutrient solution total costs: Fe-HEDTA (37.25%) > FeCl 3 (4.61%) > Fe-EDDHMA (4.53%) > Fe-EDDHA (3.35%) > Fe-DTPA (2.91%) > Fe-EDTA (1.08%) > FeSO 4 +citric acid (0.78%) > FeSO 4 (0.25%). However, only plants from Fe-EDDHA and Fe-EDDHMA treatments did not present any deficiency visual symptoms. The relative cost of Fe-EDDHA application is low, its efficiency in maintaining iron available in solution resulted in high plant heights, making it recommendable for citric rootstock production in nurseries.

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Section: Resultssupporting

confidence: 81%

Section: Methodsmentioning

confidence: 99%

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Iron sources for citrus rootstock development grown on pine bark/vermiculite mixed substrate

Ferrarezi

Bataglia

Furlani

et al. 2007

Sci. agric. (Piracicaba, Braz.)

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“…SPAD-indices give an indication of the relative chlorophyll content of leaves and are a widely used tool in the research on Fe chlorosis (Alvarez- Fernandez et al 2005;Alvarez Fernandez et al 2004;Banuls et al 2003). SPAD-measurements (Minolta-502 SPAD-meter) were done every 2 weeks including the day before harvest to compare the chlorophyll content of leaves from different treatments.…”

Section: Spad-measurementmentioning

confidence: 99%

The effectiveness of soil-applied FeEDDHA treatments in preventing iron chlorosis in soybean as a function of the o,o-FeEDDHA content

et al. 2008

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“…In fact, severe reductions of citrus yield are reported Bañuls et al 2003 ) . Not only citrus yield is adversely affected by iron de fi ciency but also other tree crops such as olive (Pastor et al 2002 ) , peach (Tagliavini et al 2000 ;Yoshikawa 1988 ) , pear (Elkins et al 2002 ) and plum (Yoshikawa et al 1982 ) .…”

Section: Effects Of Iron Chlorosis On Yield and Fruit Qualitymentioning

confidence: 98%

Lime-Induced Iron Chlorosis in Citrus: Diagnosis Through Physiological and Metabolic Evidences

Jiménez

Torrecillas

Sevilla

et al. 2012

Advances in Citrus Nutrition

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Iron is essential for plants nutrition, being required in small but in critical concentrations for plant growth and crop productivity. Despite total iron content in soils is much higher than that required by plants, soil iron bioavailability is low, particularly in calcareous soils. For this, many agricultural crops worldwide growing in semiarid climates and calcareous soils suffer from iron de fi ciency (iron chlorosis or lime-induced chlorosis). In this sense, chlorotic leaves may contain as much or more total iron than healthy leaves of the same age ( chlorosis paradox ). In this chapter, we discuss the strengths and weaknesses of the leaf visual rating of chlorosis, fl oral mineral analysis and leaf active iron for diagnosing citrus iron nutritional status. The effect of iron chlorosis on yield and physical and chemical characteristics of citrus fruits was also reviewed. We analyse the metabolic response of citrus to iron de fi ciency, paying special attention to the inducible mechanisms developed under low-iron stress and to the metabolic changes able to be used to evaluate the iron de fi ciency. Finally, we reviewed the bioactive compounds in the citrus fruits, paying special attention to the fact that iron de fi ciency enhances phenolics and, as a consequence, health-promoting effects of the fruits for the human body.

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Effects of the Frequency of Iron Chelate Supply by Fertigation on Iron Chlorosis in Citrus

Cited by 11 publications

References 10 publications

Iron sources for citrus rootstock development grown on pine bark/vermiculite mixed substrate

Iron sources for citrus rootstock development grown on pine bark/vermiculite mixed substrate

The effectiveness of soil-applied FeEDDHA treatments in preventing iron chlorosis in soybean as a function of the o,o-FeEDDHA content

Lime-Induced Iron Chlorosis in Citrus: Diagnosis Through Physiological and Metabolic Evidences

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