Abstract
Two field trials were conducted on potato plants cv. Spunta, in the vegetable private farm at Kafr Meet Faris, Dakahlia Governorate, during two winter seasons of 2017/2018 and 2018/2019 to study the influence of foliar spray with calcium (0, 1000, 1500 and 2000 ppm) and some antioxidants (control, Ascorbic acid at 300 ppm, boric acid at 100 ppm and Salicylic acid at 50 ppm) in additions to their interaction on plant growth, yield and its components as well as chemical constituents in tuber.In general, all the studied characteristics were better in plants sprayed calcium compared with the control treatment. Plant length, number of main stems/plant, number of leaves/plant, leaf area and foliage dry weight/plant, total tubers yield, marketable tubers yield, tuber dry weight, the tuber content of N, P, K, starch and TSS were increased with increasing calcium level up to 2000 ppm.Foliar spray with antioxidants led to significant increases of the vegetative growth characteristics and enhanced total yield and its components as well as chemical constituents in tuber. Foliar spray with boric acid at 100 ppm have the highest records in all studied characteristics followed by Salicylic acid in both seasons.The positive interactions between foliar spray calcium levels and foliar spray with antioxidants were often observed.The best results were obtained by plants sprayed calcium at the level of 2000 ppm and boric acid followed by Salicylic acid.Therefore, this treatment could be recommended for raising potato yield and improving tuber quality of potato under such conditions of this study.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Calcium sprays increased potato vegetative growth traits up to 2000 ppm.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- calcium level up to 2000 ppme0
- Outcome
- Plant length, number of main stems/plant, number of leaves/plante0
- Direction
- increasede0
- Comparator
- control treatmente1
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Plant length, number of main stems/plant, number of leaves/plant, leaf area and foliage dry weight/plant, total tubers yield, marketable tubers yield, tuber dry weight, the tuber content of N, P, K, starch and TSS were increased with increasing calcium level up to 2000 ppm.”
e1“all the studied characteristics were better in plants sprayed calcium compared with the control treatment.”
t0“Potato”
Claim · model-written summary
Increasing calcium up to 2000 ppm increased potato leaf area and foliage dry weight.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- calcium level up to 2000 ppme0
- Outcome
- leaf area and foliage dry weight/plante0
- Direction
- increasede0
- Comparator
- control treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Plant length, number of main stems/plant, number of leaves/plant, leaf area and foliage dry weight/plant, total tubers yield, marketable tubers yield, tuber dry weight, the tuber content of N, P, K, starch and TSS were increased with increasing calcium level up to 2000 ppm.”
e1“compared with the control treatment”
t0“Potato”
Claim · model-written summary
Increasing calcium up to 2000 ppm increased total and marketable potato tuber yield and tuber dry weight.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- calcium level up to 2000 ppme0
- Outcome
- total tubers yield, marketable tubers yield, tuber dry weighte0
- Direction
- increasede0
- Comparator
- control treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“total tubers yield, marketable tubers yield, tuber dry weight, the tuber content of N, P, K, starch and TSS were increased with increasing calcium level up to 2000 ppm.”
e1“compared with the control treatment”
t0“Potato”
Claim · model-written summary
Increasing calcium up to 2000 ppm increased tuber N, P and K content.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- calcium level up to 2000 ppme0
- Outcome
- tuber content of N, P, Ke0
- Direction
- increasede0
- Comparator
- control treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the tuber content of N, P, K, starch and TSS were increased with increasing calcium level up to 2000 ppm.”
e1“compared with the control treatment”
t0“Potato”
Claim · model-written summary
Increasing calcium up to 2000 ppm increased tuber starch and TSS.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- calcium level up to 2000 ppme0
- Outcome
- starch and TSSe0
- Direction
- increasede0
- Comparator
- control treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the tuber content of N, P, K, starch and TSS were increased with increasing calcium level up to 2000 ppm.”
e1“compared with the control treatment”
t0“Potato”
Claim · model-written summary
Antioxidant foliar sprays significantly increased potato vegetative growth traits.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Foliar spray with antioxidantse0
- Outcome
- vegetative growth characteristicse0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar spray with antioxidants led to significant increases of the vegetative growth characteristics”
t0“Potato”
Claim · model-written summary
Antioxidant foliar sprays enhanced potato total yield and its components.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Foliar spray with antioxidantse0
- Outcome
- total yield and its componentse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar spray with antioxidants led to significant increases of the vegetative growth characteristics and enhanced total yield and its components as well as chemical constituents in tuber.”
t0“Potato”
Claim · model-written summary
Antioxidant foliar sprays enhanced potato tuber chemical constituents.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Foliar spray with antioxidantse0
- Outcome
- chemical constituents in tubere0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar spray with antioxidants led to significant increases of the vegetative growth characteristics and enhanced total yield and its components as well as chemical constituents in tuber.”
t0“Potato”
Claim · model-written summary
Boric acid at 100 ppm gave the highest measured characteristics among antioxidant treatments.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- boric acid at 100 ppme0
- Outcome
- all studied characteristicse0
- Direction
- higheste0
- Qualifier
- in both seasonse0
- Comparator
- Salicylic acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar spray with boric acid at 100 ppm have the highest records in all studied characteristics followed by Salicylic acid in both seasons.”
t0“Potato”
Claim · model-written summary
Calcium and antioxidant foliar sprays often showed positive interactions.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- foliar spray calcium levels and foliar spray with antioxidantse0
- Outcome
- positive interactionse0
- Qualifier
- oftene0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The positive interactions between foliar spray calcium levels and foliar spray with antioxidants were often observed.”
t0“Potato”
Claim · model-written summary
Calcium at 2000 ppm with boric acid produced the best results, followed by salicylic acid.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- calcium at the level of 2000 ppm and boric acide0
- Outcome
- best resultse0
- Direction
- beste0
- Comparator
- Salicylic acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The best results were obtained by plants sprayed calcium at the level of 2000 ppm and boric acid followed by Salicylic acid.”
t0“Potato”
Claim · model-written summary
The authors recommend the calcium and boric acid treatment to raise potato yield and improve tuber quality under the study conditions.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- calcium at the level of 2000 ppm and boric acide0
- Outcome
- raising potato yield and improving tuber qualitye0
- Qualifier
- under such conditions of this studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The best results were obtained by plants sprayed calcium at the level of 2000 ppm and boric acid followed by Salicylic acid.Therefore, this treatment could be recommended for raising potato yield and improving tuber quality of potato under such conditions of this study.”
The same questions in other papers
calcium atom · quality: postharvest · Solanum tuberosum (potato)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
3 papers more in this group
See all 7 papers →calcium atom · growth · Solanum tuberosum (potato)Positive and negative results
15 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- negative
13 papers more in this group
See all 17 papers →calcium atom · nutrient: content · Solanum tuberosum (potato)Positive and negative results
18 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
17 papers more in this group
See all 21 papers →antioxidant · yield · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
calcium atom · quality: sugar starch · Solanum tuberosum (potato)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →application · growth · Solanum tuberosum (potato)Positive and negative results
70 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- negative
74 papers more in this group
See all 78 papers →application · yield · Solanum tuberosum (potato)Positive and negative results
176 papers in the same direction as this paper · 14 in the opposite direction
- no effect
- no effect
- negative
187 papers more in this group
See all 191 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.