Abstract
Evaluations of fruit quality and nitrogen, potassium, and calcium concentration of apple (Malus domestica Borkh. cvs. Gala and Golab) grown with five treatments of NO3−:NH4+ ratios were made in pot culture. The concentrations of NO3−:NH4+ ratios were 2.5:0.1, 6:1, 6:0.7, 6:0.5, 6:0.3 meq L−1. Fruit size, percent dry matter, total dissolved solids, total acidity, or juice pH was not affected by increased ammonium in the ratio. Firmness decreased as the proportion of NH4+ increased. Gala and Golab differed in some of these parameters. Concentrations of N and K increased as NH4+ increased, whereas Ca had no trend or decreased. Generally, the treatment of 2.5:0.1 produced fruits with lower N but higher K and Ca concentrations than the other treatments. This research showed that some parameters such as fruit weight, length, and diameter, juice pH, and dry matter were not affected significantly by NH4+ concentration whereas composition was affected.
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Claims 9
Claim · model-written summary
Increased ammonium did not affect fruit size, dry matter, dissolved solids, acidity, or juice pH.
- Taxon
- apple
Malus domesticat0 - Treatment
- increased ammonium in the ratioe0
- Outcome
- Fruit size, percent dry matter, total dissolved solidse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit size, percent dry matter, total dissolved solids, total acidity, or juice pH was not affected by increased ammonium in the ratio.”
t0“Apple”
Claim · model-written summary
Fruit firmness declined as ammonium proportion increased.
- Taxon
- appleMalus domesticat0
- Treatment
- proportion of NH4+e0
- Outcome
- Firmnesse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Firmness decreased as the proportion of NH4+ increased.”
t0“Apple”
Claim · model-written summary
Gala and Golab differed in some fruit parameters.
- Taxon
- appleMalus domesticat0
- Material
- Gala and Golabe0
- Outcome
- some of these parameterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gala and Golab differed in some of these parameters.”
t0“Apple”
Claim · model-written summary
Fruit nitrogen concentration rose with ammonium.
- Taxon
- appleMalus domesticat0
- Treatment
- NH4+e0
- Outcome
- Concentrations of Ne0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of N and K increased as NH4+ increased, whereas Ca had no trend or decreased.”
t0“Apple”
Claim · model-written summary
Fruit potassium concentration rose with ammonium.
- Taxon
- appleMalus domesticat0
- Treatment
- NH4+e0
- Outcome
- Ke0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of N and K increased as NH4+ increased, whereas Ca had no trend or decreased.”
t0“Apple”
Claim · model-written summary
Fruit calcium concentration had no consistent trend or declined with ammonium.
- Taxon
- appleMalus domesticat0
- Treatment
- NH4+e0
- Outcome
- Cae0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of N and K increased as NH4+ increased, whereas Ca had no trend or decreased.”
t0“Apple”
Claim · model-written summary
The 2.5:0.1 ratio yielded lower fruit nitrogen.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment of 2.5:0.1 produced fruits with lower N but higher K and Ca concentrations than the other treatments.”
t0“Apple”
Claim · model-written summary
The 2.5:0.1 ratio yielded higher fruit potassium.
- Taxon
- appleMalus domesticat0
- Treatment
- 2.5:0.1e0
- Outcome
- Ke0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment of 2.5:0.1 produced fruits with lower N but higher K and Ca concentrations than the other treatments.”
t0“Apple”
Claim · model-written summary
The 2.5:0.1 ratio yielded higher fruit calcium.
- Taxon
- appleMalus domesticat0
- Treatment
- 2.5:0.1e0
- Outcome
- Ca concentrationse0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment of 2.5:0.1 produced fruits with lower N but higher K and Ca concentrations than the other treatments.”
t0“Apple”
The same questions in other papers
nitrogen · yield · Malus domestica (apple)Results differ
16 papers in the same direction as this paper · 52 in the opposite direction
- positive
- positive
- positive
65 papers more in this group
See all 69 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.