Paper · 2001 · Indian Journal of Agronomy

Effect of divergent plant spacings and age of seedlings on yield and economics of hybrid rice (Oryza sativa)

M.L. KEWAT; S.B. AGRAWAL; K.K. AGRAWAL; et al.

6
claims
12
verbatim quotes
24
citations
1
research areas
✓
Open access

Abstract

An investigation was conducted during the rainy seasons of 1998 and 1999, to evaluate the effect of divergent plant spacings and age of seedlings on yield and economics of Pro Agro 6201 hybrid rice (Oryza sativa L.). Transplanting seedlings at a closest spacing 20 cm x 10 cm produced significantly highest grain (63 qlha) and straw (162 qlha) yields and benefit : cost ratio (2.8) than wider spacings of 20 cm x 20 cm and 20 cm x 15 cm but was comparable to 15 cm x 15 spacing. Similarly, transplanting of 21 and 28 day old seedlings registered significantly higher grain and straw yields, net monetary returns and benefit : cost ratio than transplanting of thin and lanky seedlings of 14 days.

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Claims 6

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Transplanting seedlings at the closest spacing 20 cm x 10 cm gave significantly the highest grain yield (63 q/ha) compared with wider spacings of 20 cm x 20 cm and 20 cm x 15 cm.

Taxon
hybrid riceOryza sativae2
Treatment
Transplanting seedlings at a closest spacing 20 cm x 10 cme1
Outcome
graine1
Direction
higheste1
Value
63 qlhae1
Comparator
wider spacings of 20 cm x 20 cm and 20 cm x 15 cme1
Setting
rainy seasons of 1998 and 1999e2

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

e1

“Transplanting seedlings at a closest spacing 20 cm x 10 cm produced significantly highest grain (63 qlha) and straw (162 qlha) yields and benefit : cost ratio (2.8) than wider spacings of 20 cm x 20 cm and 20 cm x 15 cm but was comparable to 15 cm x 15 spacing”

✓ located verbatim in the source · abstract, characters 217–477 · show in text ↑
e2

“An investigation was conducted during the rainy seasons of 1998 and 1999, to evaluate the effect of divergent plant spacings and age of seedlings on yield and economics of Pro Agro 6201 hybrid rice (Oryza sativa L.)”

✓ located verbatim in the source · abstract, characters 0–215 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The same closest spacing gave significantly the highest straw yield (162 q/ha) compared with wider spacings of 20 cm x 20 cm and 20 cm x 15 cm.

Taxon
hybrid riceOryza sativae2
Treatment
Transplanting seedlings at a closest spacing 20 cm x 10 cme1
Outcome
strawe1
Direction
higheste1
Value
162 qlhae1
Comparator
wider spacings of 20 cm x 20 cm and 20 cm x 15 cme1
Setting
rainy seasons of 1998 and 1999e2

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

e1

“Transplanting seedlings at a closest spacing 20 cm x 10 cm produced significantly highest grain (63 qlha) and straw (162 qlha) yields and benefit : cost ratio (2.8) than wider spacings of 20 cm x 20 cm and 20 cm x 15 cm but was comparable to 15 cm x 15 spacing”

✓ located verbatim in the source · abstract, characters 217–477 · show in text ↑
e2

“An investigation was conducted during the rainy seasons of 1998 and 1999, to evaluate the effect of divergent plant spacings and age of seedlings on yield and economics of Pro Agro 6201 hybrid rice (Oryza sativa L.)”

✓ located verbatim in the source · abstract, characters 0–215 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The same closest spacing gave significantly the highest benefit : cost ratio (2.8) compared with wider spacings of 20 cm x 20 cm and 20 cm x 15 cm.

Taxon
hybrid riceOryza sativae2
Treatment
Transplanting seedlings at a closest spacing 20 cm x 10 cme1
Outcome
benefit : cost ratioe1
Direction
higheste1
Value
2.8e1
Comparator
wider spacings of 20 cm x 20 cm and 20 cm x 15 cme1
Setting
rainy seasons of 1998 and 1999e2

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

e1

“Transplanting seedlings at a closest spacing 20 cm x 10 cm produced significantly highest grain (63 qlha) and straw (162 qlha) yields and benefit : cost ratio (2.8) than wider spacings of 20 cm x 20 cm and 20 cm x 15 cm but was comparable to 15 cm x 15 spacing”

✓ located verbatim in the source · abstract, characters 217–477 · show in text ↑
e2

“An investigation was conducted during the rainy seasons of 1998 and 1999, to evaluate the effect of divergent plant spacings and age of seedlings on yield and economics of Pro Agro 6201 hybrid rice (Oryza sativa L.)”

✓ located verbatim in the source · abstract, characters 0–215 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The closest spacing 20 cm x 10 cm was comparable in yields to the 15 cm x 15 cm spacing.

Taxon
hybrid riceOryza sativae2
Treatment
Transplanting seedlings at a closest spacing 20 cm x 10 cme1
Outcome
yieldse1
Direction
comparablee1
Comparator
15 cm x 15 spacinge1
Setting
rainy seasons of 1998 and 1999e2

Not reportedValue

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

e1

“Transplanting seedlings at a closest spacing 20 cm x 10 cm produced significantly highest grain (63 qlha) and straw (162 qlha) yields and benefit : cost ratio (2.8) than wider spacings of 20 cm x 20 cm and 20 cm x 15 cm but was comparable to 15 cm x 15 spacing”

✓ located verbatim in the source · abstract, characters 217–477 · show in text ↑
e2

“An investigation was conducted during the rainy seasons of 1998 and 1999, to evaluate the effect of divergent plant spacings and age of seedlings on yield and economics of Pro Agro 6201 hybrid rice (Oryza sativa L.)”

✓ located verbatim in the source · abstract, characters 0–215 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Transplanting 21 and 28 day old seedlings gave significantly higher grain yield, straw yield and net monetary returns than thin 14 day old seedlings.

Taxon
hybrid riceOryza sativae2
Treatment
21 and 28 day old seedlingse3
Outcome
grain and straw yields, net monetary returnse3
Direction
highere3
Comparator
thin and lanky seedlings of 14 dayse3
Setting
rainy seasons of 1998 and 1999e2

Not reportedValue

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

e2

“An investigation was conducted during the rainy seasons of 1998 and 1999, to evaluate the effect of divergent plant spacings and age of seedlings on yield and economics of Pro Agro 6201 hybrid rice (Oryza sativa L.)”

✓ located verbatim in the source · abstract, characters 0–215 · show in text ↑
e3

“Similarly, transplanting of 21 and 28 day old seedlings registered significantly higher grain and straw yields, net monetary returns and benefit : cost ratio than transplanting of thin and lanky seedlings of 14 days”

✓ located verbatim in the source · abstract, characters 479–694 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Transplanting 21 and 28 day old seedlings gave significantly higher benefit : cost ratio than thin 14 day old seedlings.

Taxon
hybrid riceOryza sativae2
Treatment
21 and 28 day old seedlingse3
Outcome
benefit : cost ratioe3
Direction
highere3
Comparator
thin and lanky seedlings of 14 dayse3
Setting
rainy seasons of 1998 and 1999e2

Not reportedValue

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

e2

“An investigation was conducted during the rainy seasons of 1998 and 1999, to evaluate the effect of divergent plant spacings and age of seedlings on yield and economics of Pro Agro 6201 hybrid rice (Oryza sativa L.)”

✓ located verbatim in the source · abstract, characters 0–215 · show in text ↑
e3

“Similarly, transplanting of 21 and 28 day old seedlings registered significantly higher grain and straw yields, net monetary returns and benefit : cost ratio than transplanting of thin and lanky seedlings of 14 days”

✓ located verbatim in the source · abstract, characters 479–694 · show in text ↑

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

395 papers: 330 positive, 65 negative or no effect

329 papers in the same direction as this paper · 58 in the opposite direction · 7 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

391 papers more in this group

See all 395 papers →

transplanting · yield · Oryza sativa (rice)Positive and negative results

1,078 papers: 922 positive, 156 negative or no effect

921 papers in the same direction as this paper · 132 in the opposite direction · 24 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. positive

1,074 papers more in this group

See all 1,078 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.