Abstract
AbstractStrawberry (Fragaria ananasa) plants were grown in hydroponics in a greenhouse, where the supply of different ammonium (NH4+): nitrate (NO3−) ratios, was investigated to reduce the negative effect of alkalinity in nutrient solutions. The experiment was arranged in factorial combination with two factors, NH4+:NO3− ratios (0%:100%, 25%:75%, 50%:50%, 75%:25%, and 100%:0%) and bicarbonate (0, 25, 50, and 75 mM; NaHCO3). Plants treated with increasing bicarbonate concentrations exhibited significantly inhibited growth. In plants treated with NH4+ and NO3− simultaneously, there was a counteraction of the bicarbonate-induced growth suppression. Sole NO3− application in the presence of high bicarbonate resulted in poor growth and plant death due to high alkalinity. The adverse effect of alkalinity on SPAD values and maximal quantum yield of PSII photochemistry (Fv/Fm) alleviated with increasing proportion of NH4+ in nutrient solutions. The results showed that fruit numbers and yield of strawberry increased with elevation of NH4+ in nutrient solutions.Keywords: bicarbonatechlorophyllFragaria ananasanitrogennutrients
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 5
Claim · model-written summary
Increasing bicarbonate concentrations significantly inhibited strawberry growth in hydroponics.
- Taxon
- Strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- increasing bicarbonate concentrationse0
- Outcome
- growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
t0“Strawberry”
e0“Plants treated with increasing bicarbonate concentrations exhibited significantly inhibited growth”
Claim · model-written summary
Supplying NH4+ and NO3− simultaneously counteracted the bicarbonate-induced growth suppression in strawberry.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- NH4+ and NO3− simultaneouslye1
- Outcome
- bicarbonate-induced growth suppressione1
- Direction
- counteractione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberry”
e1“In plants treated with NH4+ and NO3− simultaneously, there was a counteraction of the bicarbonate-induced growth suppression”
Claim · model-written summary
Sole NO3− application in the presence of high bicarbonate resulted in poor growth and plant death of strawberry due to high alkalinity.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- Sole NO3− application in the presence of high bicarbonatee2
- Outcome
- poor growth and plant deathe2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberry”
e2“Sole NO3− application in the presence of high bicarbonate resulted in poor growth and plant death due to high alkalinity”
Claim · model-written summary
The adverse effect of alkalinity on SPAD values and Fv/Fm of strawberry was alleviated with an increasing proportion of NH4+ in nutrient solutions.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- increasing proportion of NH4+ in nutrient solutionse3
- Outcome
- SPAD values and maximal quantum yield of PSII photochemistry (Fv/Fm)e3
- Direction
- alleviatede3
- Qualifier
- adverse effect of alkalinitye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberry”
e3“The adverse effect of alkalinity on SPAD values and maximal quantum yield of PSII photochemistry (Fv/Fm) alleviated with increasing proportion of NH4+ in nutrient solutions”
Claim · model-written summary
Fruit numbers and yield of strawberry increased with elevation of NH4+ in nutrient solutions.
- Taxon
- strawberryFragaria ×ananassae4
- Treatment
- elevation of NH4+ in nutrient solutionse4
- Outcome
- fruit numbers and yielde4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“fruit numbers and yield of strawberry increased with elevation of NH4+ in nutrient solutions”
The same questions in other papers
fertilization · yield · Fragaria x ananassa (strawberry)Positive and negative results
192 papers in the same direction as this paper · 34 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- no effect
- no effect
225 papers more in this group
See all 229 papers →altitude · yield · Fragaria x ananassa (strawberry)Results agree
1 paper in the same direction as this paper
- positive
fertilization · physiology: photosynthesis · Fragaria x ananassa (strawberry)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 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.