Abstract
Strawberry plants (Fragaria ananassa Duchesne var. Elsanta) were grown in pots at two concentrations of carbon dioxide (partial pressures of 39 and 56 Pa) and with three rates of nitrogen supply (0n04, 0n4 and 4 m as nutrient solution) to study their individual and interactive effects on plant growth and fruit yield. Nitrogen deficiency reduced total dry biomass and relative growth rate (RGR), mainly through reductions in leaf area ratio (LAR) and plant N concentration (PNC), although both the net assimilation rate (NAR) and root weight ratio (RWR) increased. Elevated CO # increased the N productivity (NP) but reduced the LAR. High CO # increased the fruit yield by 42 % at high N supply and by 17 % at low N supply. The CO # yield enhancement occurred through an increase in the flower and fruit number of individual plants. This resulted in an increase in the fruit weight ratio (FWR) of plants at high CO # . Nitrogen deficiency reduced the fruit yield by about 50 % through decreases in fruit size, fruit set and the number of fruits. However, N deficiency increased the proportion of total plant dry biomass allocated to fruits. There were no significant interactions between CO # and N supply on yield.
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Claims 13
Claim · model-written summary
Nitrogen deficiency reduced strawberry total dry biomass and relative growth rate.
- Taxon
- Fragaria ananassa
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- Nitrogen deficiencye0
- Outcome
- total dry biomass and relative growth rate (RGR)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Nitrogen deficiency reduced total dry biomass and relative growth rate (RGR)”
t0“Fragaria ananassa”
Claim · model-written summary
Nitrogen deficiency reduced leaf area ratio and plant nitrogen concentration.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- Nitrogen deficiencye0
- Outcome
- leaf area ratio (LAR) and plant N concentration (PNC)e0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen deficiency reduced total dry biomass and relative growth rate (RGR), mainly through reductions in leaf area ratio (LAR) and plant N concentration (PNC)”
t0“Fragaria ananassa”
Claim · model-written summary
Nitrogen deficiency increased net assimilation rate and root weight ratio.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- Nitrogen deficiencye1
- Outcome
- net assimilation rate (NAR) and root weight ratio (RWR)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the net assimilation rate (NAR) and root weight ratio (RWR) increased.”
e1“Nitrogen deficiency reduced total dry biomass”
t0“Fragaria ananassa”
Claim · model-written summary
Elevated carbon dioxide increased nitrogen productivity.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- Elevated CO #e0
- Outcome
- N productivity (NP)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO # increased the N productivity (NP) but reduced the LAR.”
t0“Fragaria ananassa”
Claim · model-written summary
Elevated carbon dioxide reduced leaf area ratio.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- Elevated CO #e0
- Outcome
- LARe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO # increased the N productivity (NP) but reduced the LAR.”
t0“Fragaria ananassa”
Claim · model-written summary
High carbon dioxide increased fruit yield by 42% at high nitrogen supply.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- High CO #e0
- Outcome
- fruit yielde0
- Direction
- increasede0
- Value
- 42 %e0
- Qualifier
- high N supplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High CO # increased the fruit yield by 42 % at high N supply and by 17 % at low N supply.”
t0“Fragaria ananassa”
Claim · model-written summary
High carbon dioxide increased fruit yield by 17% at low nitrogen supply.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- High CO #e0
- Outcome
- fruit yielde0
- Direction
- increasede0
- Value
- 17 %e0
- Qualifier
- low N supplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High CO # increased the fruit yield by 42 % at high N supply and by 17 % at low N supply.”
t0“Fragaria ananassa”
Claim · model-written summary
Carbon dioxide yield enhancement occurred through more flowers and fruits per plant.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- CO #e0
- Outcome
- flower and fruit number of individual plantse0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CO # yield enhancement occurred through an increase in the flower and fruit number of individual plants.”
t0“Fragaria ananassa”
Claim · model-written summary
High carbon dioxide increased fruit weight ratio.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- high CO #e0
- Outcome
- fruit weight ratio (FWR)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This resulted in an increase in the fruit weight ratio (FWR) of plants at high CO # .”
t0“Fragaria ananassa”
Claim · model-written summary
Nitrogen deficiency reduced fruit yield by about 50%.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- Nitrogen deficiencye0
- Outcome
- fruit yielde0
- Direction
- reducede0
- Value
- about 50 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen deficiency reduced the fruit yield by about 50 %”
t0“Fragaria ananassa”
Claim · model-written summary
Nitrogen deficiency decreased fruit size, fruit set and fruit number.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- Nitrogen deficiencye0
- Outcome
- fruit size, fruit set and the number of fruitse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen deficiency reduced the fruit yield by about 50 % through decreases in fruit size, fruit set and the number of fruits.”
t0“Fragaria ananassa”
Claim · model-written summary
Nitrogen deficiency increased the proportion of plant dry biomass allocated to fruits.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- N deficiencye0
- Outcome
- proportion of total plant dry biomass allocated to fruitse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N deficiency increased the proportion of total plant dry biomass allocated to fruits.”
t0“Fragaria ananassa”
Claim · model-written summary
Carbon dioxide and nitrogen supply had no significant interaction on yield.
- Taxon
- Fragaria ananassaFragaria ×ananassat0
- Treatment
- CO # and N supplye0
- Outcome
- yielde0
- Direction
- no significant interactionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant interactions between CO # and N supply on yield.”
t0“Fragaria ananassa”
The same questions in other papers
nitrogen · yield · Fragaria x ananassa (strawberry)Results differ
47 papers in the same direction as this paper · 12 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- no effect
- positive
- no effect
56 papers more in this group
See all 60 papers →nitrogen · growth · Fragaria x ananassa (strawberry)Positive and negative results
25 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- negative
28 papers more in this group
See all 32 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.