Abstract
Abstract In a greenhouse study, mono‐ammonium phosphate applications to ‘Delicious’ (Oregon spur cv) apple trees, Malus domestica Borkh., improved a low‐vigor condition associated with a caliche soil. The moderate rate of mono‐ammonium phosphate (6 grams per tree) resulted in trees with greater shoot extension, leaf numbers, a higher percent leaf phosphorus, and less purple leaf margins or spots than other soil treatments or the control. By September, trees treated with the highest rate of mono‐ammonia phosphate (12 grams per tree) had the highest level of leaf phosphorus and significantly higher levels of leaf phosphorus than all forms of nitrogen‐only fertilizer (ammonium nitrate, ammonium sulfate, calcium nitrate, and urea). In most cases, applications of the nitrogen‐only fertilizers, reduced leaf phosphorus levels throughout the experiment.
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Claims 6
Claim · model-written summary
Mono-ammonium phosphate applications improved the low-vigor condition of Delicious apple trees associated with a caliche soil in a greenhouse.
- Taxon
- Malus domestica
Malus domesticae0 - Material
- ‘Delicious’ (Oregon spur cv)e0
- Treatment
- mono‐ammonium phosphate applicationse0
- Outcome
- low‐vigor conditione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mono‐ammonium phosphate applications to ‘Delicious’ (Oregon spur cv) apple trees, Malus domestica Borkh., improved a low‐vigor condition associated with a caliche soil”
Claim · model-written summary
The moderate rate of mono-ammonium phosphate (6 g per tree) gave apple trees greater shoot extension and leaf numbers than other soil treatments or the control.
- Taxon
- apple treesMalus domesticat0
- Treatment
- moderate rate of mono‐ammonium phosphate (6 grams per tree)e0
- Outcome
- shoot extension, leaf numberse0
- Direction
- greatere0
- Comparator
- other soil treatments or the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple trees”
e0“The moderate rate of mono‐ammonium phosphate (6 grams per tree) resulted in trees with greater shoot extension, leaf numbers, a higher percent leaf phosphorus, and less purple leaf margins or spots than other soil treatments or the control”
Claim · model-written summary
The moderate rate of mono-ammonium phosphate (6 g per tree) gave apple trees a higher percent leaf phosphorus than other soil treatments or the control.
- Taxon
- apple treesMalus domesticat0
- Treatment
- moderate rate of mono‐ammonium phosphate (6 grams per tree)e0
- Outcome
- percent leaf phosphoruse0
- Direction
- highere0
- Comparator
- other soil treatments or the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple trees”
e0“The moderate rate of mono‐ammonium phosphate (6 grams per tree) resulted in trees with greater shoot extension, leaf numbers, a higher percent leaf phosphorus, and less purple leaf margins or spots than other soil treatments or the control”
Claim · model-written summary
The moderate rate of mono-ammonium phosphate (6 g per tree) gave apple trees less purple leaf margins or spots than other soil treatments or the control.
- Taxon
- apple treesMalus domesticat0
- Treatment
- moderate rate of mono‐ammonium phosphate (6 grams per tree)e0
- Outcome
- purple leaf margins or spotse0
- Direction
- lesse0
- Comparator
- other soil treatments or the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple trees”
e0“The moderate rate of mono‐ammonium phosphate (6 grams per tree) resulted in trees with greater shoot extension, leaf numbers, a higher percent leaf phosphorus, and less purple leaf margins or spots than other soil treatments or the control”
Claim · model-written summary
By September, apple trees given the highest rate of mono-ammonium phosphate (12 g per tree) had the highest leaf phosphorus, significantly higher than with any nitrogen-only fertiliser.
- Taxon
- apple treesMalus domesticat0
- Treatment
- highest rate of mono‐ammonia phosphate (12 grams per tree)e0
- Outcome
- level of leaf phosphoruse0
- Direction
- higheste0
- Qualifier
- By Septembere0
- Comparator
- all forms of nitrogen‐only fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple trees”
e0“By September, trees treated with the highest rate of mono‐ammonia phosphate (12 grams per tree) had the highest level of leaf phosphorus and significantly higher levels of leaf phosphorus than all forms of nitrogen‐only fertilizer (ammonium nitrate, ammonium sulfate, calcium nitrate, and urea)”
Claim · model-written summary
In most cases, nitrogen-only fertiliser applications reduced leaf phosphorus levels in apple trees throughout the experiment.
- Taxon
- apple treesMalus domesticat0
- Treatment
- nitrogen‐only fertilizerse0
- Outcome
- leaf phosphorus levelse0
- Direction
- reducede0
- Qualifier
- In most casese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple trees”
e0“In most cases, applications of the nitrogen‐only fertilizers, reduced leaf phosphorus levels throughout the experiment”
The same questions in other papers
nitrogen · nutrient: content · Malus domestica (apple)Positive and negative results
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- positive
- positive
- positive
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See all 38 papers →fertilization · nutrient: content · Malus domestica (apple)Positive and negative results
30 papers in the same direction as this paper · 86 in the opposite direction
- positive
- positive
- positive
113 papers more in this group
See all 117 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.