Abstract
Aims: To evaluate the effect of various sources, levels and methods of calcium application on the growth, yield and SPAD index of carrots grown on acid soils Study Design: Factorial randomized block design (FRBD) with three replications. Place and Duration of Study: A field experiment was conducted in the farmer’s field at Takkarbaba Nagar, Ooty from February to June, 2023. Methodology: A field experiment was conducted with carrot hybrid Zubera using lime at 50% LR and dolomite at 20,40,60 and 80 kg Ca ha-1 as basal soil application and foliar spraying of 0.5% calcium EDTA and calcium citrate twice on 30 and 45 DAP in a factorial randomized block design with three replications. The growth parameters such as plant height, petiole length, number of leaves per plant, SPAD index and tuber yield were recorded as per standard protocols at different plant growth stages viz., vegetative, tuber development and harvest stages. Results: A significant linear increase in plant height, petiole length, number of leaves per plant, SPAD index and tuber yield was recorded with the supplementation of calcium at different levels. Higher plant height (26.3 cm, 51.2 cm and 56.1 cm), petiole length (13.8 cm, 23.0 cm and 35.8 cm), number of leaves per plant (7.62, 7.82 and 9.30), SPAD index (22.0, 38.0 and 35.2) and fresh tuber yield (37.2 t ha-1) was registered with NPK+ 80 kg Ca as dolomite along with two sprays of 0.5% Ca EDTA twice which was followed by the same level of calcium as dolomite + foliar spraying of 0.5% calcium citrate twice. The minimum growth and yield response of carrot at all the growth stages was noticed with NPK control. Conclusion: Application of calcium through soil and foliar spraying showed synergistic influence on the growth and SPAD index of carrot at all stages of growth. Application of NPK+ 80 kg Ca ha-1 as dolomite performed better when compared to lime applied at 50% LR. Between Ca EDTA and Ca citrate, the performance of Ca EDTA was better in improving the growth and yield of carrot. It was concluded that the combined application of soil test based NPK+80 kg Ca ha-1 as dolomite along with two sprays of 0.5% calcium EDTA on 30 and 45 DAP would be effective in improving the growth, yield and SPAD index of carrot grown on acid lateritic soils.
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Claims 14
Claim · model-written summary
Calcium supplementation significantly increased plant height.
- Taxon
- Carrot
Daucus carotat0 - Treatment
- supplementation of calcium at different levelse0
- Outcome
- plant heighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant linear increase in plant height, petiole length, number of leaves per plant, SPAD index and tuber yield was recorded with the supplementation of calcium at different levels.”
t0“Carrot”
Claim · model-written summary
Calcium supplementation significantly increased petiole length.
- Taxon
- CarrotDaucus carotat0
- Treatment
- supplementation of calcium at different levelse0
- Outcome
- petiole lengthe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant linear increase in plant height, petiole length, number of leaves per plant, SPAD index and tuber yield was recorded with the supplementation of calcium at different levels.”
t0“Carrot”
Claim · model-written summary
Calcium supplementation significantly increased number of leaves per plant.
- Taxon
- CarrotDaucus carotat0
- Treatment
- supplementation of calcium at different levelse0
- Outcome
- number of leaves per plante0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant linear increase in plant height, petiole length, number of leaves per plant, SPAD index and tuber yield was recorded with the supplementation of calcium at different levels.”
t0“Carrot”
Claim · model-written summary
Calcium supplementation significantly increased SPAD index.
- Taxon
- CarrotDaucus carotat0
- Treatment
- supplementation of calcium at different levelse0
- Outcome
- SPAD indexe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant linear increase in plant height, petiole length, number of leaves per plant, SPAD index and tuber yield was recorded with the supplementation of calcium at different levels.”
t0“Carrot”
Claim · model-written summary
Calcium supplementation significantly increased tuber yield.
- Taxon
- CarrotDaucus carotat0
- Treatment
- supplementation of calcium at different levelse0
- Outcome
- tuber yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant linear increase in plant height, petiole length, number of leaves per plant, SPAD index and tuber yield was recorded with the supplementation of calcium at different levels.”
t0“Carrot”
Claim · model-written summary
The dolomite plus Ca EDTA treatment produced the reported higher plant height at three stages.
- Taxon
- CarrotDaucus carotat0
- Outcome
- plant heighte0
- Direction
- Highere0
- Value
- 26.3 cm, 51.2 cm and 56.1 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher plant height (26.3 cm, 51.2 cm and 56.1 cm)”
t0“Carrot”
Claim · model-written summary
The treatment produced the reported higher petiole lengths.
- Taxon
- CarrotDaucus carotat0
- Outcome
- petiole lengthe0
- Value
- 13.8 cm, 23.0 cm and 35.8 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“petiole length (13.8 cm, 23.0 cm and 35.8 cm)”
t0“Carrot”
Claim · model-written summary
The treatment produced the reported higher leaf counts.
- Taxon
- CarrotDaucus carotat0
- Outcome
- number of leaves per plante0
- Value
- 7.62, 7.82 and 9.30e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of leaves per plant (7.62, 7.82 and 9.30)”
t0“Carrot”
Claim · model-written summary
The treatment produced the reported SPAD index values.
- Taxon
- CarrotDaucus carotat0
- Outcome
- SPAD indexe0
- Value
- 22.0, 38.0 and 35.2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SPAD index (22.0, 38.0 and 35.2)”
t0“Carrot”
Claim · model-written summary
The treatment produced fresh tuber yield of 37.2 t ha-1.
- Taxon
- CarrotDaucus carotat0
- Outcome
- fresh tuber yielde0
- Value
- 37.2 t ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh tuber yield (37.2 t ha-1)”
t0“Carrot”
Claim · model-written summary
NPK control had the minimum growth and yield response.
- Taxon
- carrotDaucus carotae0
- Outcome
- growth and yield responsee0
- Direction
- minimume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The minimum growth and yield response of carrot at all the growth stages was noticed with NPK control.”
Claim · model-written summary
Dolomite at 80 kg calcium per hectare performed better than lime at 50% LR.
- Taxon
- CarrotDaucus carotat0
- Treatment
- NPK+ 80 kg Ca ha-1 as dolomitee0
- Outcome
- performed bettere0
- Direction
- performed bettere0
- Comparator
- lime applied at 50% LRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of NPK+ 80 kg Ca ha-1 as dolomite performed better when compared to lime applied at 50% LR.”
t0“Carrot”
Claim · model-written summary
Ca EDTA performed better than Ca citrate for carrot growth and yield.
- Taxon
- carrotDaucus carotae0
- Treatment
- Ca EDTAe0
- Outcome
- growth and yielde0
- Direction
- bettere0
- Comparator
- Ca citratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Between Ca EDTA and Ca citrate, the performance of Ca EDTA was better in improving the growth and yield of carrot.”
Claim · model-written summary
The authors recommend combined dolomite and calcium EDTA sprays to improve carrot growth, yield and SPAD index.
- Taxon
- carrotDaucus carotae0
- Outcome
- combined application of soil test based NPK+80 kg Ca ha-1 as dolomite along with two sprays of 0.5% calcium EDTA on 30 and 45 DAPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that the combined application of soil test based NPK+80 kg Ca ha-1 as dolomite along with two sprays of 0.5% calcium EDTA on 30 and 45 DAP would be effective in improving the growth, yield and SPAD index of carrot grown on acid lateritic soils.”
The same questions in other papers
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calcium atom · physiology: pigments · Daucus carota (carrot)Results agree
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calcium atom · growth · Daucus carota (carrot)Results agree
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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.