Abstract
Abstract Field experiments of chelated-or Epsom salt-Mg sprays in 1981 and 1982 on ‘Delicious’ (Red King and Starking strains) and ‘McIntosh’ apple trees ( Malus domestica Borkh.) indicated that a minimum of 2 x 2.8 kg Mg/ha, foliar-applied, was necessary to increase leaf-Mg concentration to desired 0.26% levels in ‘McIntosh’. Thus, label-recommended application rates for chelated Mg (2 x 0.56 kg Mg/ha) were too low. ‘McIntosh’ extension growth was increased by adequate foliar-Mg applications, although leaf Ca was reduced in 1 year by the foliar-Mg treatments.
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Claims 4
Claim · model-written summary
At least 2 x 2.8 kg Mg/ha was necessary to raise McIntosh leaf magnesium to 0.26%.
- Taxon
- apple trees
Malus domesticae1 - Material
- ‘McIntosh’e0
- Treatment
- 2 x 2.8 kg Mg/ha, foliar-appliede0
- Outcome
- leaf-Mg concentratione0
- Direction
- increasee0
- Value
- 0.26%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a minimum of 2 x 2.8 kg Mg/ha, foliar-applied, was necessary to increase leaf-Mg concentration to desired 0.26% levels in ‘McIntosh’.”
e1“apple trees”
Claim · model-written summary
The authors judged the label rate for chelated Mg too low.
- Taxon
- apple treesMalus domesticae1
- Outcome
- label-recommended application rates for chelated Mg (2 x 0.56 kg Mg/ha) were too lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thus, label-recommended application rates for chelated Mg (2 x 0.56 kg Mg/ha) were too low.”
e1“apple trees”
Claim · model-written summary
Adequate foliar Mg increased McIntosh extension growth.
- Taxon
- apple treesMalus domesticae1
- Material
- ‘McIntosh’e0
- Treatment
- adequate foliar-Mg applicationse0
- Outcome
- extension growthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘McIntosh’ extension growth was increased by adequate foliar-Mg applications”
e1“apple trees”
Claim · model-written summary
Foliar Mg reduced leaf calcium in one year.
- Taxon
- apple treesMalus domesticae1
- Treatment
- foliar-Mg treatmentse0
- Outcome
- leaf Cae0
- Direction
- reducede0
- Qualifier
- in 1 yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf Ca was reduced in 1 year by the foliar-Mg treatments.”
e1“apple trees”
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