Abstract
Strawberry plants are relatively unresponsive to nitrogen (N) fertilization. Supraoptimal N application also results in excessive vegetative growth, which competes to reproductive growth. Two strawberry field experiments were conducted for two consecutive years using fertigation to investigate the effect of different nitrogen (N) application rates on yield and growth of an everbearing strawberry (cv. Evie II). N was injected weekly into the drip irrigation system at 0, 0.5, 1, 3, and 6 kg N/ha/week the first year and 0, 1, 2, and 3 kg N/ha/week the next year. Fruit yield and fruit number were not affected the first year, but were increased the second year due to N application. However, there was no effect of N nutrition on average berry weight for both years. It was concluded that N fertilization may increase yield and fruit number, but average berry weight remains unaffected.
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Claims 5
Claim · model-written summary
Nitrogen did not affect strawberry fruit yield in the first year.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- N applicatione0
- Outcome
- Fruit yielde0
- Direction
- not affectede0
- Qualifier
- the first yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Fruit yield and fruit number were not affected the first year, but were increased the second year due to N application.”
t0“strawberry”
Claim · model-written summary
Nitrogen did not affect strawberry fruit number in the first year.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- N applicatione0
- Outcome
- fruit numbere0
- Direction
- not affectede0
- Qualifier
- the first yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yield and fruit number were not affected the first year, but were increased the second year due to N application.”
t0“strawberry”
Claim · model-written summary
Nitrogen increased strawberry fruit yield in the second year.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- N applicatione0
- Outcome
- Fruit yielde0
- Direction
- increasede0
- Qualifier
- the second yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yield and fruit number were not affected the first year, but were increased the second year due to N application.”
t0“strawberry”
Claim · model-written summary
Nitrogen increased strawberry fruit number in the second year.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- N applicatione0
- Outcome
- fruit numbere0
- Direction
- increasede0
- Qualifier
- the second yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yield and fruit number were not affected the first year, but were increased the second year due to N application.”
t0“strawberry”
Claim · model-written summary
Nitrogen had no effect on average strawberry berry weight in either year.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- N nutritione0
- Outcome
- average berry weighte0
- Direction
- no effecte0
- Qualifier
- both yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no effect of N nutrition on average berry weight for both years.”
t0“strawberry”
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
- positive
- positive
- positive
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See all 60 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.