Abstract
In winter strawberry (Fragaria × ananassa Duch.) production, early-season nitrogen (N) fertilization greatly affects fruit earliness and yields, especially when pre-plant N is not applied. The objective of this study was to characterize the dose-responses of canopy growth, yield, and fruit quality to early-season N fertilization in ‘Florida Radiance’ and ‘Florida127’ strawberry. Field experiments were conducted in west-central Florida, United States. Treatments included four (0.56, 0.84, 1.12 and 1.40 kg ha−1 d−1) and five (0.22, 0.67, 1.12, 1.57, and 2.02 kg ha−1 d−1) early-season N rates in the first and second growing seasons, respectively. Increasing the early-season N rate increased early and total season yields by up to 62% to 65% and 56% to 58%, respectively, in the two cultivars. The total season yield had high positive correlations with leaf area and shoot DW. Model fitting analysis revealed cultivar-dependent dose-responses. Yield and berry size responses in ‘Florida Radiance’ were linear increases, whereas those in ‘Florida127’ were quadratic with peaks occurring at N rates of 1.21 or 1.57 kg ha−1 d−1. In ‘Florida Radiance’, soluble solids concentration showed a linear dose-response with a slope of –0.91 (0.91 °Brix decrease per 1 kg ha−1 d−1 N increase) during the early season. These results suggest that optimization of early-season N fertilization is an important production strategy to improve the profitability of winter strawberry production. Furthermore, fertilizer management that takes into account cultivar-dependent dose-responses can improve fertilizer use efficiency while minimizing fruit quality loss and environmental pollution risks.
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Claims 11
Claim · model-written summary
Increasing early-season nitrogen increased early yield by up to 62% to 65% in the two cultivars.
- Taxon
- Strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- early-season N ratee0
- Outcome
- earlye0
- Direction
- increasede0
- Value
- 62% to 65%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Increasing the early-season N rate increased early and total season yields by up to 62% to 65% and 56% to 58%, respectively, in the two cultivars.”
t0“Strawberry”
Claim · model-written summary
Increasing early-season nitrogen increased total season yield by up to 56% to 58% in the two cultivars.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- early-season N ratee0
- Outcome
- total season yieldse0
- Direction
- increasede0
- Value
- 56% to 58%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the early-season N rate increased early and total season yields by up to 62% to 65% and 56% to 58%, respectively, in the two cultivars.”
t0“Strawberry”
Claim · model-written summary
Total season yield correlated positively with leaf area and shoot dry weight.
- Taxon
- StrawberryFragaria ×ananassat0
- Organ / stage
- leaf area and shoot DWe0
- Outcome
- total season yielde0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total season yield had high positive correlations with leaf area and shoot DW.”
t0“Strawberry”
Claim · model-written summary
Nitrogen dose responses differed by cultivar.
- Taxon
- StrawberryFragaria ×ananassat0
- Outcome
- cultivar-dependent dose-responsese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Model fitting analysis revealed cultivar-dependent dose-responses.”
t0“Strawberry”
Claim · model-written summary
Florida Radiance yield increased linearly with nitrogen rate.
- Taxon
- StrawberryFragaria ×ananassat0
- Material
- Florida Radiancee0
- Treatment
- Nitrogent0
- Outcome
- Yielde0
- Direction
- linear increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and berry size responses in ‘Florida Radiance’ were linear increases”
t0“Nitrogen Fertilization Rate Effects on Growth, Yield, and Quality of Strawberry”
Claim · model-written summary
Florida Radiance berry size increased linearly with nitrogen rate.
- Taxon
- StrawberryFragaria ×ananassat0
- Material
- Florida Radiancee0
- Treatment
- Nitrogent0
- Outcome
- berry sizee0
- Direction
- linear increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and berry size responses in ‘Florida Radiance’ were linear increases”
t0“Nitrogen Fertilization Rate Effects on Growth, Yield, and Quality of Strawberry”
Claim · model-written summary
Florida127 yield had a quadratic nitrogen response peaking at 1.21 or 1.57 kg ha−1 d−1.
- Taxon
- StrawberryFragaria ×ananassat0
- Material
- Florida127e0
- Treatment
- N ratese0
- Outcome
- Yieldt0
- Direction
- peakse0
- Value
- 1.21 or 1.57 kg ha−1 d−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those in ‘Florida127’ were quadratic with peaks occurring at N rates of 1.21 or 1.57 kg ha−1 d−1”
t0“Yield, and Quality of Strawberry”
Claim · model-written summary
Florida127 berry size had a quadratic nitrogen response peaking at 1.21 or 1.57 kg ha−1 d−1.
- Taxon
- StrawberryFragaria ×ananassat0
- Material
- Florida127e0
- Treatment
- N ratese0
- Outcome
- berry sizee0
- Direction
- peakse0
- Value
- 1.21 or 1.57 kg ha−1 d−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and berry size responses in ‘Florida Radiance’ were linear increases, whereas those in ‘Florida127’ were quadratic with peaks occurring at N rates of 1.21 or 1.57 kg ha−1 d−1”
t0“Strawberry”
Claim · model-written summary
Florida Radiance early-season soluble solids concentration decreased 0.91 °Brix for each 1 kg ha−1 d−1 increase in nitrogen.
- Taxon
- StrawberryFragaria ×ananassat0
- Material
- Florida Radiancee0
- Treatment
- N increasee0
- Outcome
- soluble solids concentratione0
- Direction
- decreasee0
- Value
- 0.91 °Brixe0
- Qualifier
- during the early seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In ‘Florida Radiance’, soluble solids concentration showed a linear dose-response with a slope of –0.91 (0.91 °Brix decrease per 1 kg ha−1 d−1 N increase) during the early season.”
t0“Strawberry”
Claim · model-written summary
The authors recommend optimizing early-season nitrogen to improve profitability.
- Taxon
- strawberryFragaria ×ananassae0
- Outcome
- optimization of early-season N fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimization of early-season N fertilization is an important production strategy to improve the profitability of winter strawberry production”
Claim · model-written summary
Cultivar-specific fertilizer management may improve fertilizer use efficiency and reduce fruit-quality loss and pollution risks.
- Taxon
- StrawberryFragaria ×ananassat0
- Outcome
- fertilizer management that takes into account cultivar-dependent dose-responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilizer management that takes into account cultivar-dependent dose-responses can improve fertilizer use efficiency while minimizing fruit quality loss and environmental pollution risks”
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
- no effect
- no effect
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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.