Paper · 1982 · Madras Agricultural Journal

Effect of age of seedlings and planting density on growth and yield of rice under late planting

GHOSH D.C

9
claims
17
verbatim quotes
1
citations
1
research areas
✓
Open access · cc-by

Abstract

Field experiments conducted during Kharif sensens of 1979 and 1980 revacled that 40 day old seedlings were superior to 50 and 60 day old seedlings of rice veris- ties-Pankaj and Masuri. Grain yield was found to decrease with the increase in seedling age. Crop raised from younger seedlings produced higher number of tillera and panicles por unit area, moro grains per panicle, greater percentage of filled grains and higher test weight or grains than those raised from older seedlings. Pankej provad to be the highest yielder. The spacing of 20x10 cm was found optimum for both those varieties as compared to the other spacing 20x15 cm. This spacing also recorded highest panicle population per unit aros. The yield loss due to the use of older seed- lings was partially compensated with closer. apecing. Yield obtained from 50 day old seedlings with 20x10 cm spacing (44.1 q/he) was es good as obtained from 40 day old seedlings with the spacings of 20x10 cm [45.6 g/ha] ond 20 x 15 cm (45.7 q/ha).

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 9

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

40 day old seedlings were superior to 50 and 60 day old seedlings of rice varieties Pankaj and Masuri.

Material
Pankaj and Masurie0
Treatment
40 day old seedlingse0
Outcome
superiore0
Direction
superiore0
Comparator
50 and 60 day old seedlingse0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“40 day old seedlings were superior to 50 and 60 day old seedlings of rice veris- ties-Pankaj and Masuri”

✓ located verbatim in the source · abstract, characters 81–184 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Rice grain yield decreased with increasing seedling age.

Treatment
seedling agee0
Outcome
Grain yielde0
Direction
decreasee0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Grain yield was found to decrease with the increase in seedling age”

✓ located verbatim in the source · abstract, characters 186–253 · show in text ↑
t0

“growth and yield of rice”

✓ located verbatim in the source · title, characters 51–75 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Younger seedlings produced higher numbers of tillers and panicles per unit area and more grains per panicle than older seedlings.

Treatment
younger seedlingse0
Outcome
number of tillera and panicles por unit area, moro grains per paniclee0
Direction
highere0
Comparator
older seedlingse0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Crop raised from younger seedlings produced higher number of tillera and panicles por unit area, moro grains per panicle, greater percentage of filled grains and higher test weight or grains than those raised from older seedlings”

✓ located verbatim in the source · abstract, characters 255–484 · show in text ↑
t0

“growth and yield of rice”

✓ located verbatim in the source · title, characters 51–75 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Younger seedlings gave a greater percentage of filled grains and higher test weight than older seedlings.

Treatment
younger seedlingse0
Outcome
percentage of filled grains and higher test weight or grainse0
Direction
greatere0
Comparator
older seedlingse0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Crop raised from younger seedlings produced higher number of tillera and panicles por unit area, moro grains per panicle, greater percentage of filled grains and higher test weight or grains than those raised from older seedlings”

✓ located verbatim in the source · abstract, characters 255–484 · show in text ↑
t0

“growth and yield of rice”

✓ located verbatim in the source · title, characters 51–75 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Pankaj proved to be the highest yielding rice variety.

Material
Pankeje0
Outcome
highest yieldere0
Direction
higheste0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Pankej provad to be the highest yielder”

✓ located verbatim in the source · abstract, characters 486–525 · show in text ↑
t0

“growth and yield of rice”

✓ located verbatim in the source · title, characters 51–75 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A spacing of 20x10 cm was optimum for both varieties compared with 20x15 cm.

Treatment
spacing of 20x10 cme0
Outcome
optimume0
Direction
optimume0
Comparator
other spacing 20x15 cme0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The spacing of 20x10 cm was found optimum for both those varieties as compared to the other spacing 20x15 cm”

✓ located verbatim in the source · abstract, characters 527–635 · show in text ↑
t0

“growth and yield of rice”

✓ located verbatim in the source · title, characters 51–75 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 20x10 cm spacing also recorded the highest panicle population per unit area.

Treatment
This spacinge0
Outcome
panicle population per unit arose0
Direction
higheste0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“This spacing also recorded highest panicle population per unit aros”

✓ located verbatim in the source · abstract, characters 637–704 · show in text ↑
t0

“growth and yield of rice”

✓ located verbatim in the source · title, characters 51–75 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The yield loss from using older seedlings was partially compensated by closer spacing.

Treatment
closer. apecinge0
Outcome
yield loss due to the use of older seed- lingse0
Direction
partially compensatede0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The yield loss due to the use of older seed- lings was partially compensated with closer. apecing”

✓ located verbatim in the source · abstract, characters 706–803 · show in text ↑
t0

“growth and yield of rice”

✓ located verbatim in the source · title, characters 51–75 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Yield from 50 day old seedlings at 20x10 cm spacing (44.1 q/ha) was as good as from 40 day old seedlings at 20x10 cm (45.6 q/ha) and 20x15 cm (45.7 q/ha).

Treatment
50 day old seedlings with 20x10 cm spacinge0
Outcome
Yielde0
Direction
es good ase0
Value
44.1 q/hee0
Qualifier
[45.6 g/ha] ond 20 x 15 cm (45.7 q/ha)e0
Comparator
40 day old seedlings with the spacings of 20x10 cme0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Yield obtained from 50 day old seedlings with 20x10 cm spacing (44.1 q/he) was es good as obtained from 40 day old seedlings with the spacings of 20x10 cm [45.6 g/ha] ond 20 x 15 cm (45.7 q/ha)”

✓ located verbatim in the source · abstract, characters 805–998 · show in text ↑
t0

“growth and yield of rice”

✓ located verbatim in the source · title, characters 51–75 · show in text ↑

density · pest · Oryza sativa (rice)Positive and negative results

13 papers: 8 positive, 5 negative or no effect

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

  1. no effect
  2. negative
  3. no effect

9 papers more in this group

See all 13 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.