Abstract
In the period 1969-1973 two experiments were performed in young orchards in Central Poland: a four-year experiment at Julianów, on sandy loamy soil on underlying sand and one-year experiment at Kośmin, on sandy loam soil on clay loam. At Kosmin, in spite of a high Mg content in the subsoil, Mg deficiency symptoms appeared, because of shallow rooting owing to poor aeration. In both experiments, foliar sprays with epsomite were less effective than fertilization to the soil; at Kośmin even eight sprays were less effective than soil dressings. Mg losses from a sandy soil due to leaching were high, particularly where sand was present in the whole profile; under these conditions the least losses of Mg were from split doses of epsomite (Mg3x120). Single doses of epsomite were the most effective in increasing leaf Mg content, reducing Mg deficiency symptoms and promoting growth of trees in the first year after application; in the later years split doses of epsomite and a single initial dose of magnesium lime were more effective. Effects of Mg fertilization on growth and yields of apples were rather slight, when K fertilizer doses were low. No effect of Mg fertilization upon fruit drop and fruit quality was found. Preliminary recommendations for practice are given.
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Claims 10
Claim · model-written summary
Foliar sprays with epsomite were less effective than soil fertilization in apple trees.
- Taxon
- apple trees
Malus domesticat0 - Treatment
- foliar sprays with epsomitee1
- Outcome
- effectivee1
- Direction
- less effectivee1
- Comparator
- fertilization to the soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In both experiments, foliar sprays with epsomite were less effective than fertilization to the soil”
t0“Magnesium nutrition of apple trees”
Claim · model-written summary
Even eight epsomite foliar sprays were less effective than soil dressings at Kosmin.
- Taxon
- apple treesMalus domesticat0
- Treatment
- eight sprayse1
- Outcome
- effectivee1
- Direction
- less effectivee1
- Comparator
- soil dressingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“even eight sprays were less effective than soil dressings”
t0“Magnesium nutrition of apple trees”
Claim · model-written summary
Mg losses from sandy soil by leaching were high, particularly where sand was present in the whole profile.
- Taxon
- apple treesMalus domesticat0
- Outcome
- Mg losses from a sandy soil due to leachinge1
- Direction
- highe1
- Qualifier
- particularly where sand was present in the whole profilee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Mg losses from a sandy soil due to leaching were high, particularly where sand was present in the whole profile”
t0“Magnesium nutrition of apple trees”
Claim · model-written summary
Split doses of epsomite gave the least Mg losses.
- Taxon
- apple treesMalus domesticat0
- Treatment
- split doses of epsomitee1
- Outcome
- losses of Mge1
- Direction
- leaste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the least losses of Mg were from split doses of epsomite (Mg3x120)”
t0“Magnesium nutrition of apple trees”
Claim · model-written summary
Single doses of epsomite were the most effective in increasing leaf Mg content, reducing Mg deficiency symptoms and promoting tree growth in the first year.
- Taxon
- apple treesMalus domesticat0
- Treatment
- single doses of epsomitee1
- Outcome
- increasing leaf Mg content, reducing Mg deficiency symptoms and promoting growth of treese1
- Direction
- the most effectivee1
- Qualifier
- in the first year after applicatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Single doses of epsomite were the most effective in increasing leaf Mg content, reducing Mg deficiency symptoms and promoting growth of trees in the first year after application”
t0“Magnesium nutrition of apple trees”
Claim · model-written summary
In later years, split doses of epsomite were more effective.
- Taxon
- apple treesMalus domesticat0
- Treatment
- split doses of epsomitee1
- Outcome
- effectivee1
- Direction
- more effectivee1
- Qualifier
- in the later yearse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“in the later years split doses of epsomite and a single initial dose of magnesium lime were more effective”
t0“Magnesium nutrition of apple trees”
Claim · model-written summary
In later years, a single initial dose of magnesium lime was more effective.
- Taxon
- apple treesMalus domesticat0
- Treatment
- a single initial dose of magnesium limee1
- Outcome
- effectivee1
- Direction
- more effectivee1
- Qualifier
- in the later yearse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“in the later years split doses of epsomite and a single initial dose of magnesium lime were more effective”
t0“Magnesium nutrition of apple trees”
Claim · model-written summary
Mg fertilization had rather slight effects on apple growth and yield when K fertilizer doses were low.
- Taxon
- applesMalus domesticae1
- Treatment
- Mg fertilizatione1
- Outcome
- growth and yieldse1
- Direction
- no_changeinferrede1
- Qualifier
- when K fertilizer doses were lowe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Effects of Mg fertilization on growth and yields of apples were rather slight, when K fertilizer doses were low”
t0“Magnesium nutrition of apple trees”
Claim · model-written summary
Mg fertilization had no effect on apple fruit drop and fruit quality.
- Taxon
- applesMalus domesticae2
- Treatment
- Mg fertilizatione1
- Outcome
- fruit drop and fruit qualitye1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“No effect of Mg fertilization upon fruit drop and fruit quality was found”
e2“Effects of Mg fertilization on growth and yields of apples were rather slight, when K fertilizer doses were low”
Claim · model-written summary
Mg deficiency symptoms at Kosmin appeared because of shallow rooting owing to poor aeration.
- Taxon
- apple treesMalus domesticat0
- Outcome
- Mg deficiency symptomse1
- Qualifier
- shallow rooting owing to poor aeratione1
- Setting
- Kosmine1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“At Kosmin, in spite of a high Mg content in the subsoil, Mg deficiency symptoms appeared, because of shallow rooting owing to poor aeration”
t0“Magnesium nutrition of apple trees”
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