Paper · 1986 · Journal of Agronomy and Crop Science

Effects of Population on Physiological Growth Parameters of Pigeonpea Genotypes in Sole and Intercropped Stand with Sorghum CO 22

M. Madhavan; V. S. Shanmugasundaram; Sp. Palaniappan

15
claims
29
verbatim quotes
3
citations
3
research areas
—
Not open access

Abstract

Abstract A field experiment was conducted during khariff 1984 in sandy clay loam soil under irrigated condition at the Tamil Nadu Agricultural University, Coimbatore, with a view (i) to find out the possibility of introducing short duration dwarf variety of sorghum CO 22 as an intercrop with pigeonpea genotypes, (ii) to study the effect of different plant population levels and intercropping of sorghum CO 22 on pigeonpea genotypes, and (iii) to find out compatible pigeonpea genotypes and plant population level for pigeonpea based intercropping system with sorghum CO 22. It was observed that increased plant density significantly increased the dry matter production, leaf area index (LAI) and crop growth rate (CGR) during early stages and reduced the net assimilation rate (NAR), relative growth rate (RGR) and CCR during later part of the growth. Intercropping of sorghum CO 22 significantly reduced the dry matter production LAI, CGR, NAR and RGR. Plants in the intercropped stands recorded higher CGR, NAR and RGR during later part of the growth. Among pigeonpea genotypes CO 5 was much affected due to intercropping with sorghum CO 22.

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 15

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increased density increased pigeonpea dry matter production during early stages.

Taxon
PigeonpeaCajanus cajant0
Treatment
increased plant densitye0
Outcome
dry matter productione0
Direction
increasede0
Qualifier
early stagese0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“increased plant density significantly increased the dry matter production, leaf area index (LAI) and crop growth rate (CGR) during early stages and reduced the net assimilation rate (NAR), relative growth rate (RGR) and CCR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 597–853 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increased density increased pigeonpea leaf area index (LAI) during early stages.

Taxon
PigeonpeaCajanus cajant0
Treatment
increased plant densitye0
Outcome
leaf area index (LAI)e0
Direction
increasede0
Qualifier
early stagese0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“increased plant density significantly increased the dry matter production, leaf area index (LAI) and crop growth rate (CGR) during early stages and reduced the net assimilation rate (NAR), relative growth rate (RGR) and CCR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 597–853 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increased density increased pigeonpea crop growth rate (CGR) during early stages.

Taxon
PigeonpeaCajanus cajant0
Treatment
increased plant densitye0
Outcome
crop growth rate (CGR)e0
Direction
increasede0
Qualifier
early stagese0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“increased plant density significantly increased the dry matter production, leaf area index (LAI) and crop growth rate (CGR) during early stages and reduced the net assimilation rate (NAR), relative growth rate (RGR) and CCR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 597–853 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increased density reduced pigeonpea net assimilation rate (NAR) during later part of the growth.

Taxon
PigeonpeaCajanus cajant0
Treatment
increased plant densitye0
Outcome
net assimilation rate (NAR)e0
Direction
reducede0
Qualifier
later part of the growthe0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“increased plant density significantly increased the dry matter production, leaf area index (LAI) and crop growth rate (CGR) during early stages and reduced the net assimilation rate (NAR), relative growth rate (RGR) and CCR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 597–853 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increased density reduced pigeonpea relative growth rate (RGR) during later part of the growth.

Taxon
PigeonpeaCajanus cajant0
Treatment
increased plant densitye0
Outcome
relative growth rate (RGR)e0
Direction
reducede0
Qualifier
later part of the growthe0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“increased plant density significantly increased the dry matter production, leaf area index (LAI) and crop growth rate (CGR) during early stages and reduced the net assimilation rate (NAR), relative growth rate (RGR) and CCR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 597–853 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increased density reduced pigeonpea CCR during later part of the growth.

Taxon
PigeonpeaCajanus cajant0
Treatment
increased plant densitye0
Outcome
CCRe0
Direction
reducede0
Qualifier
later part of the growthe0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“increased plant density significantly increased the dry matter production, leaf area index (LAI) and crop growth rate (CGR) during early stages and reduced the net assimilation rate (NAR), relative growth rate (RGR) and CCR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 597–853 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Intercropping sorghum CO 22 reduced pigeonpea dry matter production.

Taxon
PigeonpeaCajanus cajant0
Treatment
Intercropping of sorghum CO 22e0
Interactor
sorghum CO 22e0other
Outcome
dry matter productione0
Direction
reducede0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Intercropping of sorghum CO 22 significantly reduced the dry matter production LAI, CGR, NAR and RGR.”

✓ located verbatim in the source · abstract, characters 854–955 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Intercropping sorghum CO 22 reduced pigeonpea LAI.

Taxon
PigeonpeaCajanus cajant0
Treatment
Intercropping of sorghum CO 22e0
Interactor
sorghum CO 22e0other
Outcome
LAIe0
Direction
reducede0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Intercropping of sorghum CO 22 significantly reduced the dry matter production LAI, CGR, NAR and RGR.”

✓ located verbatim in the source · abstract, characters 854–955 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Intercropping sorghum CO 22 reduced pigeonpea CGR.

Taxon
PigeonpeaCajanus cajant0
Treatment
Intercropping of sorghum CO 22e0
Interactor
sorghum CO 22e0other
Outcome
CGRe0
Direction
reducede0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Intercropping of sorghum CO 22 significantly reduced the dry matter production LAI, CGR, NAR and RGR.”

✓ located verbatim in the source · abstract, characters 854–955 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Intercropping sorghum CO 22 reduced pigeonpea NAR.

Taxon
PigeonpeaCajanus cajant0
Treatment
Intercropping of sorghum CO 22e0
Interactor
sorghum CO 22e0other
Outcome
NARe0
Direction
reducede0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Intercropping of sorghum CO 22 significantly reduced the dry matter production LAI, CGR, NAR and RGR.”

✓ located verbatim in the source · abstract, characters 854–955 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Intercropping sorghum CO 22 reduced pigeonpea RGR.

Taxon
PigeonpeaCajanus cajant0
Treatment
Intercropping of sorghum CO 22e0
Interactor
sorghum CO 22e0other
Outcome
RGRe0
Direction
reducede0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Intercropping of sorghum CO 22 significantly reduced the dry matter production LAI, CGR, NAR and RGR.”

✓ located verbatim in the source · abstract, characters 854–955 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropped pigeonpea had higher late CGR.

Taxon
PigeonpeaCajanus cajant0
Outcome
CGRe0
Direction
highere0
Qualifier
later part of the growthe0

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants in the intercropped stands recorded higher CGR, NAR and RGR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 956–1055 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropped pigeonpea had higher late NAR.

Taxon
PigeonpeaCajanus cajant0
Outcome
NARe0
Direction
highere0
Qualifier
later part of the growthe0

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants in the intercropped stands recorded higher CGR, NAR and RGR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 956–1055 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropped pigeonpea had higher late RGR.

Taxon
PigeonpeaCajanus cajant0
Outcome
RGRe0
Direction
highere0
Qualifier
later part of the growthe0

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants in the intercropped stands recorded higher CGR, NAR and RGR during later part of the growth.”

✓ located verbatim in the source · abstract, characters 956–1055 · show in text ↑
t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 60–69 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pigeonpea genotype CO 5 was particularly affected by sorghum intercropping.

Taxon
pigeonpeaCajanus cajane0
Material
CO 5e0
Treatment
intercropping with sorghum CO 22e0
Interactor
sorghum CO 22e0other
Outcome
much affectede0

Not reportedComparatorDirection

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Among pigeonpea genotypes CO 5 was much affected due to intercropping with sorghum CO 22.”

✓ located verbatim in the source · abstract, characters 1056–1145 · show in text ↑

Sorghum · yield · Cajanus cajan (pigeon pea)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

intercropping · yield · Cajanus cajan (pigeon pea)Results differ

117 papers: 94 positive, 23 negative or no effect

93 papers in the same direction as this paper · 22 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

113 papers more in this group

See all 117 papers →

intercropping · growth · Cajanus cajan (pigeon pea)Positive and negative results

8 papers: 6 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  3. positive

4 papers more in this group

See all 8 papers →

density · growth · Cajanus cajan (pigeon pea)Positive and negative results

12 papers: 9 positive, 3 negative or no effect

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

  1. no effect
  2. no effect
  3. no effect

8 papers more in this group

See all 12 papers →

density · yield · Cajanus cajan (pigeon pea)Positive and negative results

52 papers: 49 positive, 3 negative or no effect

48 papers in the same direction as this paper · 3 in the opposite direction

  1. no effect
  2. negative
  3. no effect

48 papers more in this group

See all 52 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.