Paper · 2012 · Agricultural science digest

Effect of potassium and zinc on yield, protein content and uptake of micronutrients on cowpea [Vigna unguiculata (L.) Walp.].

A. S. Chavan; M. R. Khafi; A. D. Raj; et al.

11
claims
26
verbatim quotes
11
citations
2
research areas
—
Not open access

Abstract

A field experiment was conducted during kharif 2008 at, Junagadh on clayey soil to study the effect of potassium and zinc on quality and nutrient uptake in cowpea. Twelve treatments comprising four levels of potassium viz., 0, 20, 40 and 60 kg K2O/ha and three levels of zinc viz., 0, 20 and 40 kg Zn/ha were tried in factorial randomized block design with four replications. The results of the study indicated that significantly higher grain (1587 and 1553 kg/ha) and stover (2047 and 2010 kg/ha) yields were recorded with application of 60 kg K2O/ha and 40 kg Zn/ha, respectively. Application of 60 kg/ha potassium recorded higher protein content of grain as well as uptake of nitrogen, phosphorus, potash and zinc by grain and stover in cowpea crop. The maximum protein content of 23.59 per cent as well as higher nitrogen, phosphorus and potash uptake of 58.51, 7.33 and 12.04 kg/ha, respectively were found under 40 kg Zn/ha.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 11

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Application of 60 kg K2O/ha gave significantly higher grain yield in cowpea.

Treatment
application of 60 kg K2O/hae1
Outcome
graine1
Direction
highere1
Value
1587e1
Setting
Junagadhe0

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e0

“A field experiment was conducted during kharif 2008 at, Junagadh on clayey soil”

✓ located verbatim in the source · abstract, characters 0–79 · show in text ↑
e1

“significantly higher grain (1587 and 1553 kg/ha) and stover (2047 and 2010 kg/ha) yields were recorded with application of 60 kg K2O/ha and 40 kg Zn/ha, respectively”

✓ located verbatim in the source · abstract, characters 416–581 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Application of 60 kg K2O/ha gave significantly higher stover yield in cowpea.

Treatment
application of 60 kg K2O/hae1
Outcome
stovere1
Direction
highere1
Value
2047e1
Setting
Junagadhe0

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e0

“A field experiment was conducted during kharif 2008 at, Junagadh on clayey soil”

✓ located verbatim in the source · abstract, characters 0–79 · show in text ↑
e1

“significantly higher grain (1587 and 1553 kg/ha) and stover (2047 and 2010 kg/ha) yields were recorded with application of 60 kg K2O/ha and 40 kg Zn/ha, respectively”

✓ located verbatim in the source · abstract, characters 416–581 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

40 kg Zn/ha gave significantly higher grain yield in cowpea.

Treatment
40 kg Zn/hae1
Outcome
graine1
Direction
highere1
Value
1553e1
Setting
Junagadhe0

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e0

“A field experiment was conducted during kharif 2008 at, Junagadh on clayey soil”

✓ located verbatim in the source · abstract, characters 0–79 · show in text ↑
e1

“significantly higher grain (1587 and 1553 kg/ha) and stover (2047 and 2010 kg/ha) yields were recorded with application of 60 kg K2O/ha and 40 kg Zn/ha, respectively”

✓ located verbatim in the source · abstract, characters 416–581 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

40 kg Zn/ha gave significantly higher stover yield in cowpea.

Treatment
40 kg Zn/hae1
Outcome
stovere1
Direction
highere1
Value
2010e1
Setting
Junagadhe0

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e0

“A field experiment was conducted during kharif 2008 at, Junagadh on clayey soil”

✓ located verbatim in the source · abstract, characters 0–79 · show in text ↑
e1

“significantly higher grain (1587 and 1553 kg/ha) and stover (2047 and 2010 kg/ha) yields were recorded with application of 60 kg K2O/ha and 40 kg Zn/ha, respectively”

✓ located verbatim in the source · abstract, characters 416–581 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Application of 60 kg/ha potassium gave higher protein content of cowpea grain.

Treatment
Application of 60 kg/ha potassiume3
Outcome
protein content of graine3
Direction
highere3

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e3

“Application of 60 kg/ha potassium recorded higher protein content of grain as well as uptake of nitrogen, phosphorus, potash and zinc by grain and stover in cowpea crop”

✓ located verbatim in the source · abstract, characters 583–751 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Application of 60 kg/ha potassium gave higher uptake of nitrogen, phosphorus and potash in cowpea.

Treatment
Application of 60 kg/ha potassiume3
Outcome
uptake of nitrogen, phosphorus, potashe3
Direction
highere3

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e3

“Application of 60 kg/ha potassium recorded higher protein content of grain as well as uptake of nitrogen, phosphorus, potash and zinc by grain and stover in cowpea crop”

✓ located verbatim in the source · abstract, characters 583–751 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Application of 60 kg/ha potassium gave higher zinc uptake by grain and stover in cowpea.

Treatment
Application of 60 kg/ha potassiume3
Outcome
zince3
Direction
highere3

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e3

“Application of 60 kg/ha potassium recorded higher protein content of grain as well as uptake of nitrogen, phosphorus, potash and zinc by grain and stover in cowpea crop”

✓ located verbatim in the source · abstract, characters 583–751 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

40 kg Zn/ha gave the maximum protein content of cowpea (23.59 per cent).

Treatment
40 kg Zn/hae4
Outcome
protein contente4
Direction
maximume4
Value
23.59 per cente4

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e4

“The maximum protein content of 23.59 per cent as well as higher nitrogen, phosphorus and potash uptake of 58.51, 7.33 and 12.04 kg/ha, respectively were found under 40 kg Zn/ha”

✓ located verbatim in the source · abstract, characters 753–929 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

40 kg Zn/ha gave higher nitrogen uptake in cowpea (58.51 kg/ha).

Treatment
40 kg Zn/hae4
Outcome
nitrogene4
Direction
highere4
Value
58.51e4

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e4

“The maximum protein content of 23.59 per cent as well as higher nitrogen, phosphorus and potash uptake of 58.51, 7.33 and 12.04 kg/ha, respectively were found under 40 kg Zn/ha”

✓ located verbatim in the source · abstract, characters 753–929 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

40 kg Zn/ha gave higher phosphorus uptake in cowpea (7.33 kg/ha).

Treatment
40 kg Zn/hae4
Outcome
phosphoruse4
Direction
highere4
Value
7.33e4

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e4

“The maximum protein content of 23.59 per cent as well as higher nitrogen, phosphorus and potash uptake of 58.51, 7.33 and 12.04 kg/ha, respectively were found under 40 kg Zn/ha”

✓ located verbatim in the source · abstract, characters 753–929 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

40 kg Zn/ha gave higher potash uptake in cowpea (12.04 kg/ha).

Treatment
40 kg Zn/hae4
Outcome
potashe4
Direction
highere4
Value
12.04e4

Not reportedComparator

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

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“cowpea [Vigna unguiculata (L.) Walp.]”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
e4

“The maximum protein content of 23.59 per cent as well as higher nitrogen, phosphorus and potash uptake of 58.51, 7.33 and 12.04 kg/ha, respectively were found under 40 kg Zn/ha”

✓ located verbatim in the source · abstract, characters 753–929 · show in text ↑

zinc atom · nutrient: content · Vigna unguiculata (cowpea)Positive and negative results

10 papers: 8 positive, 2 negative or no effect

7 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. negative
  3. positive

6 papers more in this group

See all 10 papers →

zinc atom · molecular: metabolites · Vigna unguiculata (cowpea)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

zinc atom · quality: protein · Vigna unguiculata (cowpea)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

zinc atom · yield · Vigna unguiculata (cowpea)Results agree

40 papers: 40 positive, 0 negative or no effect

39 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

36 papers more in this group

See all 40 papers →

potassium · yield · Vigna unguiculata (cowpea)Positive and negative results

33 papers: 32 positive, 1 negative or no effect

31 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. positive

29 papers more in this group

See all 33 papers →

potassium · quality: protein · Vigna unguiculata (cowpea)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

potassium · nutrient: content · Vigna unguiculata (cowpea)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 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.