Abstract
A field trial was carried out at the Department of Horticulture, SHUATS, Prayagraj during 2024-25 to evaluate the impact of foliar-applied calcium and iron chelates on growth, yield and fruit quality of strawberry (Fragaria × ananassa Duch.) cv. Winter Dawn under polyhouse conditions. Seventeen treatments—including an untreated control—were imposed with varying concentrations and combinations of Ca-EDTA and Fe-EDTA. The layout followed a randomized complete block design with three replications. Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA) produced the most vigorous plants and highest yields. It achieved the greatest plant height (30.41 cm), plant spread (38.43 cm), leaf number per plant (39.48) and fruit number per plant (15.40). Yield reached 381.96 g per plant (116.88 kg per 250 m²), while fruit quality improved markedly—total soluble solids climbed to 10.73 °Brix, ascorbic acid to 60.17 mg /100 g and juice content to 96.23 %. This treatment also delivered the top benefit-cost ratio (4.20), confirming that foliar application of Ca and Fe chelates substantially enhances strawberry productivity and quality under protected cultivation.
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Claims 9
Claim · model-written summary
T14 produced the greatest strawberry plant height of 30.41 cm.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e0
- Outcome
- plant heighte0
- Direction
- greateste0
- Value
- 30.41 cme0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA) produced the most vigorous plants and highest yields. It achieved the greatest plant height (30.41 cm)”
e1“Among all treatments”
t0“strawberry (Fragaria × ananassa duch.)”
Claim · model-written summary
T14 produced the greatest strawberry plant spread of 38.43 cm.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e1
- Outcome
- plant spreade0
- Direction
- greateste2
- Value
- 38.43 cme0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant spread (38.43 cm)”
e1“Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)”
e2“the greatest plant height (30.41 cm), plant spread (38.43 cm)”
t0“strawberry (Fragaria × ananassa duch.)”
Claim · model-written summary
T14 produced the greatest strawberry leaf number per plant of 39.48.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e1
- Outcome
- leaf number per plante0
- Direction
- greateste2
- Value
- 39.48e0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf number per plant (39.48)”
e1“Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)”
e2“the greatest plant height (30.41 cm), plant spread (38.43 cm), leaf number per plant (39.48)”
t0“strawberry (Fragaria × ananassa duch.)”
Claim · model-written summary
T14 produced the greatest strawberry fruit number per plant of 15.40.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e1
- Outcome
- fruit number per plante0
- Direction
- greateste2
- Value
- 15.40e0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruit number per plant (15.40)”
e1“Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)”
e2“the greatest plant height (30.41 cm), plant spread (38.43 cm), leaf number per plant (39.48) and fruit number per plant (15.40)”
t0“strawberry (Fragaria × ananassa duch.)”
Claim · model-written summary
T14 yielded 381.96 g of strawberry fruit per plant.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e1
- Outcome
- Yielde0
- Direction
- higheste2
- Value
- 381.96 g per plante0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield reached 381.96 g per plant (116.88 kg per 250 m²)”
e1“Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)”
e2“highest yields”
t0“strawberry (Fragaria × ananassa duch.)”
Claim · model-written summary
T14 increased strawberry soluble solids to 10.73 °Brix.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e1
- Outcome
- total soluble solidse0
- Direction
- climbede0
- Value
- 10.73 °Brixe0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total soluble solids climbed to 10.73 °Brix”
e1“Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)”
t0“strawberry (Fragaria × ananassa duch.)”
Claim · model-written summary
T14 increased strawberry ascorbic acid to 60.17 mg /100 g.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e1
- Outcome
- ascorbic acide0
- Direction
- improvede2
- Value
- 60.17 mg /100 ge0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ascorbic acid to 60.17 mg /100 g”
e1“Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)”
e2“fruit quality improved markedly—total soluble solids climbed to 10.73 °Brix, ascorbic acid to 60.17 mg /100 g”
t0“strawberry (Fragaria × ananassa duch.)”
Claim · model-written summary
T14 increased strawberry juice content to 96.23 %.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e1
- Outcome
- juice contente0
- Direction
- improvede2
- Value
- 96.23 %e0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“juice content to 96.23 %”
e1“Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)”
e2“fruit quality improved markedly—total soluble solids climbed to 10.73 °Brix, ascorbic acid to 60.17 mg /100 g and juice content to 96.23 %”
t0“strawberry (Fragaria × ananassa duch.)”
Claim · model-written summary
T14 had the highest strawberry benefit-cost ratio, 4.20.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)e1
- Outcome
- benefit-cost ratioe0
- Direction
- tope0
- Value
- 4.20e0
- Comparator
- all treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also delivered the top benefit-cost ratio (4.20)”
e1“Among all treatments, T14 (1,250 ppm Ca-EDTA + 500 ppm Fe-EDTA)”
t0“strawberry (Fragaria × ananassa duch.)”
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8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.