Paper · 2025 · Journal of Advances in Biology & Biotechnology

Effects of Organic Calcium Sources and Calcium Nutrition on Growth, Yield, and Quality of Okra (Abelmoschus esculentus L Moench)

Giffy Thomas; Vandana Venugopal; Bridgit, T.K.

8
claims
13
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

The field experiments were conducted at the College of Agriculture, Padannakkad and RARS, Pilicode Kerala Agricultural University. The first investigation was performed in a completely randomized design with three treatments - by dissolving egg shells, bone pieces and powdered lime shell in coconut water vinegar replicated five times. The objective was to develop an organic calcium source for foliar spray by studying the physico- chemical characteristics and shelf life. The second experiment aimed to identify the best source and method of calcium nutrition, thereby assessing its impact on the growth, productivity, and profitability of okra [Abelmoschus esculentus (L.) Moench]. This experiment was carried out in a randomized block design (RBD) with nine treatments replicated three times. The solution prepared from egg shells can be used as an organic calcium source for foliar sprays. The highest fruit weight was exhibited by T6(KAU POP + foliar spray of 0.5 percent calcium chloride), which was statistically on par with T5(KAU POP + foliar spray of one percent calcium nitrate) and T7 (KAU POP + foliar spray of 0.5 percent calcium acetate). The total fruit yield (24.93 t ha-1) was significantly superior in all treatments where calcium is applied externally. Foliar application of calcium chloride and calcium nitrate along with KAU POP significantly increased fruit and plant dry matter production. The results demonstrate the significant role of calcium nutrition in enhancing yield, quality and economic returns in okra. The application of the recommended dose of nutrients as per KAU POP coupled with foliar spray of either 0.5% calcium chloride or 1.0% calcium nitrate can be suggested for improving calcium nutrition and thereby productivity in Okra.

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Claims 8

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Egg-shell solution was found suitable as an organic calcium source for foliar sprays.

Outcome
organic calcium source for foliar sprayse0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The solution prepared from egg shells can be used as an organic calcium source for foliar sprays.”

✓ located verbatim in the source · abstract, characters 798–895 · show in text ↑
t0

“Okra”

✓ located verbatim in the source · title, characters 90–94 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

T6 with 0.5 percent calcium chloride gave the highest fruit weight, statistically on par with T5 and T7.

Treatment
T6(KAU POP + foliar spray of 0.5 percent calcium chloride)e0
Outcome
fruit weighte0
Direction
higheste0
Comparator
T5(KAU POP + foliar spray of one percent calcium nitrate) and T7 (KAU POP + foliar spray of 0.5 percent calcium acetate)e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest fruit weight was exhibited by T6(KAU POP + foliar spray of 0.5 percent calcium chloride), which was statistically on par with T5(KAU POP + foliar spray of one percent calcium nitrate) and T7 (KAU POP + foliar spray of 0.5 percent calcium acetate).”

✓ located verbatim in the source · abstract, characters 896–1155 · show in text ↑
t0

“Okra”

✓ located verbatim in the source · title, characters 90–94 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Externally applied calcium treatments gave significantly superior total fruit yield of 24.93 t ha-1.

Treatment
calcium is applied externallye0
Outcome
total fruit yielde0
Direction
superiore0
Value
24.93 t ha-1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The total fruit yield (24.93 t ha-1) was significantly superior in all treatments where calcium is applied externally.”

✓ located verbatim in the source · abstract, characters 1156–1274 · show in text ↑
t0

“Okra”

✓ located verbatim in the source · title, characters 90–94 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Calcium chloride foliar application with KAU POP significantly increased fruit and plant dry matter.

Treatment
Foliar application of calcium chloridee0
Outcome
fruit and plant dry matter productione0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Foliar application of calcium chloride and calcium nitrate along with KAU POP significantly increased fruit and plant dry matter production.”

✓ located verbatim in the source · abstract, characters 1275–1415 · show in text ↑
t0

“Okra”

✓ located verbatim in the source · title, characters 90–94 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Calcium nitrate foliar application with KAU POP significantly increased fruit and plant dry matter.

Treatment
calcium nitrate along with KAU POPe0
Outcome
fruit and plant dry matter productione0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Foliar application of calcium chloride and calcium nitrate along with KAU POP significantly increased fruit and plant dry matter production.”

✓ located verbatim in the source · abstract, characters 1275–1415 · show in text ↑
t0

“Okra”

✓ located verbatim in the source · title, characters 90–94 · show in text ↑
Associationauthor interpretationoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Calcium nutrition enhanced okra yield, quality and economic returns.

Treatment
calcium nutritione0
Outcome
yield, quality and economic returnse0
Direction
enhancinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The results demonstrate the significant role of calcium nutrition in enhancing yield, quality and economic returns in okra.”

✓ located verbatim in the source · abstract, characters 1416–1539 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend KAU POP nutrients with 0.5% calcium chloride spray to improve okra productivity.

Treatment
0.5% calcium chloridee0
Outcome
improving calcium nutrition and thereby productivitye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The application of the recommended dose of nutrients as per KAU POP coupled with foliar spray of either 0.5% calcium chloride or 1.0% calcium nitrate can be suggested for improving calcium nutrition and thereby productivity in Okra.”

✓ located verbatim in the source · abstract, characters 1540–1772 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend KAU POP nutrients with 1.0% calcium nitrate spray to improve okra productivity.

Treatment
1.0% calcium nitratee0
Outcome
improving calcium nutrition and thereby productivitye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The application of the recommended dose of nutrients as per KAU POP coupled with foliar spray of either 0.5% calcium chloride or 1.0% calcium nitrate can be suggested for improving calcium nutrition and thereby productivity in Okra.”

✓ located verbatim in the source · abstract, characters 1540–1772 · show in text ↑

calcium chloride dihydrate · yield · Abelmoschus esculentus (okra)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

calcium atom · yield · Abelmoschus esculentus (okra)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

application · yield · Abelmoschus esculentus (okra)Positive and negative results

115 papers: 112 positive, 3 negative or no effect

111 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

111 papers more in this group

See all 115 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.