Abstract
Different foliar treatments were applied to evaluate the recovery of iron chlorosis of orange trees (Citrus sinensis (L.) Osb. cv. 'Valencia late') grown on a calcareous soil. The treatments were: Fe (II) sulphate (500 mg Fe L-1), sulphuric acid (0.5 mM H2SO4), Fe (III)-chelate (Hampiron 654 GS, 120 mg Fe L-1) and distilled water as a control. The recovery from iron chlorosis was evaluated with the SPAD-502 apparatus and the values converted to total chlorophyll concentration. The effects of treatments on the mineral composition of leaves and flowers, and the size and quality of fruits were evaluated. The residual effect of treatments was also evaluated one year later. In orange trees, the use of frequent foliar sprays with Fe was able to alleviate Fe chlorosis and prevented yield and quality losses caused by Fe chlorosis. Compared with the control, sprays of Fe (II) sulphate led to higher concentrations of chlorophyll, Fe and Zn in leaves and flowers at the end of the experimental period, and significantly improved fruit size and quality. Leaf Fe concentration increased after the sulphuric acid spray, but this treatment did not affect fruit quality parameters. The mineral composition of flowers and leaves was correlated with some fruit quality parameters obtained one year later. These results suggest that foliar sprays with Fe could help to avoid fruit quality losses caused by Fe chlorosis in citrus orchards.
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Claims 8
Claim · model-written summary
Frequent foliar iron sprays alleviated chlorosis in orange trees.
- Taxon
- orange treese0
- Treatment
- frequent foliar sprays with Fee0
- Outcome
- Fe chlorosise0
- Direction
- alleviatee0
Not reportedComparator
Verbatim
e0“In orange trees, the use of frequent foliar sprays with Fe was able to alleviate Fe chlorosis”
Claim · model-written summary
Frequent foliar iron sprays prevented yield and quality losses.
- Taxon
- orange treese0
- Treatment
- frequent foliar sprays with Fee0
- Outcome
- yield and quality lossese0
- Direction
- preventede0
Not reportedComparator
Verbatim
e0“In orange trees, the use of frequent foliar sprays with Fe was able to alleviate Fe chlorosis and prevented yield and quality losses caused by Fe chlorosis”
Claim · model-written summary
Fe(II) sulphate sprays increased leaf and flower chlorophyll, Fe and Zn concentrations versus control.
Verbatim
e0“Compared with the control, sprays of Fe (II) sulphate led to higher concentrations of chlorophyll, Fe and Zn in leaves and flowers at the end of the experimental period”
t0“ORANGE TREES”
Claim · model-written summary
Fe(II) sulphate sprays significantly improved orange fruit size and quality.
Verbatim
e0“sprays of Fe (II) sulphate led to higher concentrations of chlorophyll, Fe and Zn in leaves and flowers at the end of the experimental period, and significantly improved fruit size and quality”
e1“Compared with the control”
t0“ORANGE TREES”
Claim · model-written summary
Sulphuric acid spray increased leaf Fe concentration.
- Taxon
- ORANGE TREESt0
- Organ / stage
- Leafe0
- Treatment
- sulphuric acid spraye0
- Outcome
- Leaf Fe concentratione0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Leaf Fe concentration increased after the sulphuric acid spray”
t0“ORANGE TREES”
Claim · model-written summary
Sulphuric acid spray did not affect fruit quality parameters.
- Taxon
- ORANGE TREESt0
- Treatment
- sulphuric acid spraye1
- Outcome
- fruit quality parameterse0
- Direction
- did not affecte0
Not reportedComparator
Verbatim
e0“this treatment did not affect fruit quality parameters”
e1“sulphuric acid spray”
t0“ORANGE TREES”
Claim · model-written summary
Flower and leaf mineral composition correlated with fruit quality one year later.
- Taxon
- ORANGE TREESt0
- Organ / stage
- flowers and leavese0
- Outcome
- fruit quality parameterse0
- Qualifier
- one year latere0
Not reportedDirection
Verbatim
e0“The mineral composition of flowers and leaves was correlated with some fruit quality parameters obtained one year later”
t0“ORANGE TREES”
Claim · model-written summary
The authors suggest foliar Fe sprays could help avoid fruit quality losses in citrus orchards.
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar sprays with Fe could help to avoid fruit quality losses caused by Fe chlorosis in citrus orchards”
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