Abstract
Abstract Bearing apple (Malus domestica Borkh.) and pear (Pyrus communis L.) trees were treated with various iron (Fe) and sulfur (S) compounds in an attempt to correct or reduce severe Fe chlorosis. Fall plus spring trunk injections of ferrous sulfate solution (1.0% w: w) were the most effective and long lasting (3 or 4 years) method for reducing Fe chlorosis. Certain foliar sprays, especially Fe‐lignosulfonates, resulted in improved greening of the leaves and fruit, but the effect was of short duration (only lasting for the season of application). Soil applications of Fe and S to either the poorly drained or calcareous soils had limited and variable effectiveness on reducing Fe chlorosis. Limiting irrigation water in the poorly drained pear orchards or irrigating less but at more frequent intervals in the high pH soils of the apple orchards reduced iron chlorosis.
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Claims 8
Claim · model-written summary
Fall and spring ferrous sulfate trunk injections were the most effective and lasted three or four years in apple trees.
- Taxon
- apple
Malus domesticat0 - Treatment
- Fall plus spring trunk injections of ferrous sulfate solution (1.0% w: w)e0
- Outcome
- Fe chlorosise0
- Direction
- reducinge0
- Value
- 3 or 4 yearse0
- Qualifier
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fall plus spring trunk injections of ferrous sulfate solution (1.0% w: w) were the most effective and long lasting (3 or 4 years) method for reducing Fe chlorosis.”
t0“apple”
Claim · model-written summary
Fall and spring ferrous sulfate trunk injections were the most effective and lasted three or four years in pear trees.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Treatment
- Fall plus spring trunk injections of ferrous sulfate solution (1.0% w: w)e0
- Outcome
- Fe chlorosise0
- Direction
- reducinge0
- Value
- 3 or 4 yearse0
- Qualifier
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“Fall plus spring trunk injections of ferrous sulfate solution (1.0% w: w) were the most effective and long lasting (3 or 4 years) method for reducing Fe chlorosis.”
t0“pear”
Claim · model-written summary
Foliar sprays, especially Fe-lignosulfonates, improved apple leaf and fruit greening only during the application season.
- Taxon
- appleMalus domesticat0
- Treatment
- foliar sprays, especially Fe‐lignosulfonatese0
- Outcome
- greening of the leaves and fruite0
- Direction
- improvede0
- Qualifier
- only lasting for the season of applicatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Certain foliar sprays, especially Fe‐lignosulfonates, resulted in improved greening of the leaves and fruit, but the effect was of short duration (only lasting for the season of application).”
t0“apple”
Claim · model-written summary
Foliar sprays, especially Fe-lignosulfonates, improved pear leaf and fruit greening only during the application season.
- Taxon
- pearPyrus communist0
- Treatment
- foliar sprays, especially Fe‐lignosulfonatese0
- Outcome
- greening of the leaves and fruite0
- Direction
- improvede0
- Qualifier
- only lasting for the season of applicatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Certain foliar sprays, especially Fe‐lignosulfonates, resulted in improved greening of the leaves and fruit, but the effect was of short duration (only lasting for the season of application).”
t0“pear”
Claim · model-written summary
Soil Fe and S applications had limited, variable effectiveness in reducing apple chlorosis in poorly drained or calcareous soils.
- Taxon
- appleMalus domesticat0
- Treatment
- Soil applications of Fe and Se0
- Outcome
- Fe chlorosise0
- Direction
- reducinge0
- Qualifier
- limited and variable effectivenesse0
- Setting
- poorly drained or calcareous soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil applications of Fe and S to either the poorly drained or calcareous soils had limited and variable effectiveness on reducing Fe chlorosis.”
t0“apple”
Claim · model-written summary
Soil Fe and S applications had limited, variable effectiveness in reducing pear chlorosis in poorly drained or calcareous soils.
- Taxon
- pearPyrus communist0
- Treatment
- Soil applications of Fe and Se0
- Outcome
- Fe chlorosise0
- Direction
- reducinge0
- Qualifier
- limited and variable effectivenesse0
- Setting
- poorly drained or calcareous soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil applications of Fe and S to either the poorly drained or calcareous soils had limited and variable effectiveness on reducing Fe chlorosis.”
t0“pear”
Claim · model-written summary
Limiting irrigation reduced iron chlorosis in poorly drained pear orchards.
- Taxon
- pearPyrus communise0
- Treatment
- Limiting irrigation watere0
- Outcome
- iron chlorosise0
- Direction
- reducede0
- Setting
- poorly drained pear orchardse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Limiting irrigation water in the poorly drained pear orchards or irrigating less but at more frequent intervals in the high pH soils of the apple orchards reduced iron chlorosis.”
Claim · model-written summary
Less irrigation at more frequent intervals reduced iron chlorosis in apple orchards with high-pH soils.
- Taxon
- appleMalus domesticae0
- Treatment
- irrigating less but at more frequent intervalse0
- Outcome
- iron chlorosise0
- Direction
- reducede0
- Setting
- high pH soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigating less but at more frequent intervals in the high pH soils of the apple orchards reduced iron chlorosis.”
The same questions in other papers
iron(2+) sulfate (anhydrous) · physiology: pigments · Malus domestica (apple)Results agree
2 papers in the same direction as this paper
- positive
- positive
irrigation · physiology: pigments · Malus domestica (apple)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
3 papers more in this group
See all 7 papers →irrigation · physiology: pigments · Pyrus communis (pear)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.