Abstract
The response of peach and apple trees to added superphosphate was recorded both in the nursery and later in the orchard after transplanting. The peach and apple trees responded positively to phosphate applications in both the nursery and the orchard despite the initial presence of medium to high phosphate levels in the soils. Of major interest, too, was the absence of a consistent interaction between the phosphate treatments applied in the separate years. This suggested that the trees could not accumulate enough phosphorus in any one year to influence their response to further phosphate. Leaf analysis showed two important effects in relation to the phosphate treatments. Firstly, since high rates of application of fertilizer led to only small increases in the levels of phosphorus in the leaves, tree growth rate and phosphate absorption rate are apparently closely coupled. Secondly, the deliberate withholding of phosphate fertilizer from all trees in the fourth season led to a marked decline in the levels of phosphorus in the leaves of both peach and apple, which suggested that phosphate fertilizer should be applied annually to young fruit trees. With apple, but not peach, increasing the rate of phosphate applied in the third season stimulated the number of flower buds initiated, but this effect was not simply the result of increased vegetative growth. On the other hand, phosphate application to the peach trees in the orchard resulted in a positive fruit set and yield response in the absence of any tree growth response.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Peach trees responded positively to phosphate in nursery and orchard.
- Taxon
- peach
Prunus persicat0 - Treatment
- phosphate applicationse0
- Outcome
- responded positivelye0
- Direction
- positivelye0
- Setting
- nursery and the orcharde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peach and apple trees responded positively to phosphate applications in both the nursery and the orchard”
t0“peach”
Claim · model-written summary
Apple trees responded positively to phosphate in nursery and orchard.
- Taxon
- apple
Malus domesticat0 - Treatment
- phosphate applicationse0
- Outcome
- responded positivelye0
- Direction
- positivelye0
- Setting
- nursery and the orcharde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peach and apple trees responded positively to phosphate applications in both the nursery and the orchard”
t0“apple”
Claim · model-written summary
Phosphate treatments in separate years showed no consistent interaction.
- Taxon
- peach and apple treesMalus domesticaPrunus persicat0
- Treatment
- phosphate treatmentse0
- Outcome
- interaction between the phosphate treatmentse0
- Direction
- absencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“absence of a consistent interaction between the phosphate treatments applied in the separate years”
t0“peach and apple trees”
Claim · model-written summary
High fertilizer rates caused only small increases in leaf phosphorus.
- Taxon
- peach and apple treesMalus domesticaPrunus persicat0
- Treatment
- high rates of application of fertilizere0
- Outcome
- levels of phosphorus in the leavese0
- Direction
- small increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high rates of application of fertilizer led to only small increases in the levels of phosphorus in the leaves”
t0“peach and apple trees”
Claim · model-written summary
Withholding phosphate in the fourth season markedly reduced peach leaf phosphorus.
- Taxon
- peachPrunus persicae0
- Treatment
- withholding of phosphate fertilizere0
- Outcome
- levels of phosphorus in the leavese0
- Direction
- marked declinee0
- Qualifier
- fourth seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“withholding of phosphate fertilizer from all trees in the fourth season led to a marked decline in the levels of phosphorus in the leaves of both peach and apple”
Claim · model-written summary
Withholding phosphate in the fourth season markedly reduced apple leaf phosphorus.
- Taxon
- appleMalus domesticae0
- Treatment
- withholding of phosphate fertilizere0
- Outcome
- levels of phosphorus in the leavese0
- Direction
- marked declinee0
- Qualifier
- fourth seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“withholding of phosphate fertilizer from all trees in the fourth season led to a marked decline in the levels of phosphorus in the leaves of both peach and apple”
Claim · model-written summary
The authors recommended annual phosphate fertilizer for young fruit trees.
Verbatim
e0“phosphate fertilizer should be applied annually to young fruit trees”
Claim · model-written summary
Increasing third-season phosphate stimulated apple flower bud initiation.
- Taxon
- appleMalus domesticae0
- Treatment
- increasing the rate of phosphate applied in the third seasone0
- Outcome
- number of flower buds initiatede0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With apple, but not peach, increasing the rate of phosphate applied in the third season stimulated the number of flower buds initiated”
Claim · model-written summary
Increasing third-season phosphate did not stimulate peach flower bud initiation.
- Taxon
- peachPrunus persicae0
- Treatment
- increasing the rate of phosphate applied in the third seasone0
- Outcome
- number of flower buds initiatede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With apple, but not peach, increasing the rate of phosphate applied in the third season stimulated the number of flower buds initiated”
Claim · model-written summary
Orchard phosphate application increased peach fruit set.
- Taxon
- peachPrunus persicae0
- Treatment
- phosphate applicatione0
- Outcome
- fruit sete0
- Direction
- positivee0
- Setting
- orcharde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphate application to the peach trees in the orchard resulted in a positive fruit set and yield response in the absence of any tree growth response”
Claim · model-written summary
Orchard phosphate application increased peach yield.
- Taxon
- peachPrunus persicae0
- Treatment
- phosphate applicatione0
- Outcome
- yield responsee0
- Direction
- positivee0
- Setting
- orcharde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphate application to the peach trees in the orchard resulted in a positive fruit set and yield response in the absence of any tree growth response”
Claim · model-written summary
Orchard phosphate application did not affect peach tree growth.
- Taxon
- peachPrunus persicae0
- Treatment
- phosphate applicatione0
- Outcome
- tree growth responsee0
- Direction
- absencee0
- Setting
- orcharde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphate application to the peach trees in the orchard resulted in a positive fruit set and yield response in the absence of any tree growth response”
The same questions in other papers
phosphorus · yield · Prunus persica (peach)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
4 papers more in this group
See all 8 papers →phosphorus · growth · Prunus persica (peach)Positive and negative results
2 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
6 papers more in this group
See all 10 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.