Abstract
Zinc supplied as a fulvic-based Zn compound was absorbed and retranslocated to unsprayed new growth as effectively as zinc sulphate in apple seedlings of low Zn status grown hydroponically in the greenhouse. Similarly, fulvic- and humic-based compounds were as effective as zinc sulphate at improving short-term growth and Zn uptake into new tissues in Zn-deficient apple seedlings, with the best growth occurring at spray concentrations of Zn at 500 mg·L -1 . Under field conditions, Zn concentration of peeled and washed `Jonagold' apples at harvest was increased, without phytotoxicity, by two or four postbloom sprays of fulvic Zn. It is therefore possible to use this material safely as an effective Zn-source after bloom. However the mobility of the foliar-applied Zn is limited and any yield response by treated apple orchards of marginal Zn nutrition is unlikely to occur in the short term (within two growing seasons).
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Claims 8
Claim · model-written summary
Fulvic-based Zn was absorbed and retranslocated as effectively as zinc sulphate in low-Zn apple seedlings grown hydroponically in a greenhouse.
- Taxon
- apple seedlings
Malus domesticae0 - Treatment
- fulvic-based Zn compounde0
- Outcome
- absorbed and retranslocatede0
- Direction
- as effectively ase0
- Qualifier
- low Zn statuse0
- Comparator
- zinc sulphatee0
- Setting
- grown hydroponically in the greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc supplied as a fulvic-based Zn compound was absorbed and retranslocated to unsprayed new growth as effectively as zinc sulphate in apple seedlings of low Zn status grown hydroponically in the greenhouse”
Claim · model-written summary
Fulvic- and humic-based compounds were as effective as zinc sulphate at improving short-term growth and Zn uptake into new tissues of Zn-deficient apple seedlings.
- Taxon
- apple seedlingsMalus domesticae1
- Treatment
- fulvic- and humic-based compoundse1
- Outcome
- short-term growth and Zn uptake into new tissuese1
- Direction
- as effectivee1
- Qualifier
- Zn-deficiente1
- Comparator
- zinc sulphatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“fulvic- and humic-based compounds were as effective as zinc sulphate at improving short-term growth and Zn uptake into new tissues in Zn-deficient apple seedlings, with the best growth occurring at spray concentrations of Zn at 500 mg·L -1”
Claim · model-written summary
Best growth of Zn-deficient apple seedlings occurred at a spray concentration of 500 mg·L -1 Zn.
- Taxon
- apple seedlingsMalus domesticae1
- Treatment
- spray concentrations of Zn at 500 mg·L -1e1
- Outcome
- best growthe1
- Direction
- beste1
- Value
- 500 mg·L -1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“fulvic- and humic-based compounds were as effective as zinc sulphate at improving short-term growth and Zn uptake into new tissues in Zn-deficient apple seedlings, with the best growth occurring at spray concentrations of Zn at 500 mg·L -1”
Claim · model-written summary
Two or four postbloom sprays of fulvic Zn increased Zn concentration of Jonagold apples at harvest under field conditions.
- Taxon
- applesMalus domesticae2
- Material
- Jonagolde2
- Treatment
- two or four postbloom sprays of fulvic Zne2
- Outcome
- Zn concentration of peeled and washede2
- Direction
- increasede2
- Setting
- Under field conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Under field conditions, Zn concentration of peeled and washed `Jonagold' apples at harvest was increased, without phytotoxicity, by two or four postbloom sprays of fulvic Zn”
Claim · model-written summary
Postbloom fulvic Zn sprays caused no phytotoxicity on apples.
- Taxon
- applesMalus domesticae2
- Treatment
- postbloom sprays of fulvic Zne2
- Outcome
- phytotoxicitye2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Under field conditions, Zn concentration of peeled and washed `Jonagold' apples at harvest was increased, without phytotoxicity, by two or four postbloom sprays of fulvic Zn”
Claim · model-written summary
The mobility of foliar-applied Zn in apple is limited.
- Taxon
- appleMalus domesticae0
- Treatment
- foliar-applied Zne3
- Outcome
- mobility of the foliar-applied Zne3
- Direction
- limitede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc supplied as a fulvic-based Zn compound was absorbed and retranslocated to unsprayed new growth as effectively as zinc sulphate in apple seedlings of low Zn status grown hydroponically in the greenhouse”
e3“However the mobility of the foliar-applied Zn is limited and any yield response by treated apple orchards of marginal Zn nutrition is unlikely to occur in the short term (within two growing seasons)”
Claim · model-written summary
A yield response to treated apple orchards of marginal Zn nutrition is unlikely within two growing seasons.
- Taxon
- appleMalus domesticae3
- Outcome
- yield responsee3
- Qualifier
- within two growing seasonse3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“However the mobility of the foliar-applied Zn is limited and any yield response by treated apple orchards of marginal Zn nutrition is unlikely to occur in the short term (within two growing seasons)”
Claim · model-written summary
Fulvic-based Zn material can be used safely as an effective Zn source for apple after bloom.
- Taxon
- appleMalus domesticae0
- Outcome
- use this material safely as an effective Zn-source after bloome4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc supplied as a fulvic-based Zn compound was absorbed and retranslocated to unsprayed new growth as effectively as zinc sulphate in apple seedlings of low Zn status grown hydroponically in the greenhouse”
e4“It is therefore possible to use this material safely as an effective Zn-source after bloom”
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See all 116 papers →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.