Paper · 2022 · Indian Journal of Agronomy

Effect of first irrigation scheduling and herbicides on productivity of direct-seeded rice (Oryza sativa)

HARPREET SINGH; KANWALJIT SINGH SANDHU; KANIK KUMAR BANSAL

12
claims
29
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

An experiment was conducted during the rainy (kharif) season of 2019 at Students’ Research Farm, Khalsa College, Guru Nanak Dev University, Amritsar, Punjab. First irrigation timings, viz. I1 , 7 days after sowing (DAS); I2 , 14 DAS and I3 , 21 DAS, as main plot and herbicidal combinations, viz. W1 , pendimethalin 750 g/ha + bispyribac 25 g/ha at 25 DAS; W2 , pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha; W3, pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DAS; W4 , weedy check and W5 , weed-free as subplot treatments were conducted in a split-plot design with 3 replications. The results showed that, among the first irrigation scheduling, crop-growth parameters (plant height, dry-matter accumulation, leaf-area index); yield attributes (effective tillers, grains/panicle, 1,000-grain weight); grain yield (53.9 q/ha); net returns (`71,326/ha) and benefit : cost (B : C) ratio (2.69) were maximum in I1 treatment. Among the herbicidal combinations, crop-growth parameters, yield-attributing characters, grain yield (57.2 q/ha), net returns (` 79,800/ha), B : C ratio (3.18) and weed-control efficiency were recorded highest in pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DAS. Inclusion of bispyribac with other herbicides performed better in direct-seeded rice.

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Claims 12

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation 7 days after sowing gives maximum crop-growth parameters compared with 14 and 21 days after sowing.

Taxon
Oryza sativaOryza sativat0
Treatment
7 days after sowinge1
Outcome
crop-growth parameterse0
Direction
maximume0
Comparator
14 DAS and I3 , 21 DASe1

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e0

“crop-growth parameters (plant height, dry-matter accumulation, leaf-area index); yield attributes (effective tillers, grains/panicle, 1,000-grain weight); grain yield (53.9 q/ha); net returns (`71,326/ha) and benefit : cost (B : C) ratio (2.69) were maximum in I1 treatment”

✓ located verbatim in the source · abstract, characters 676–949 · show in text ↑
e1

“First irrigation timings, viz. I1 , 7 days after sowing (DAS); I2 , 14 DAS and I3 , 21 DAS”

✓ located verbatim in the source · abstract, characters 158–248 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation 7 days after sowing gives maximum yield attributes compared with 14 and 21 days after sowing.

Taxon
Oryza sativaOryza sativat0
Treatment
7 days after sowinge1
Outcome
yield attributese0
Direction
maximume0
Comparator
14 DAS and I3 , 21 DASe1

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e0

“crop-growth parameters (plant height, dry-matter accumulation, leaf-area index); yield attributes (effective tillers, grains/panicle, 1,000-grain weight); grain yield (53.9 q/ha); net returns (`71,326/ha) and benefit : cost (B : C) ratio (2.69) were maximum in I1 treatment”

✓ located verbatim in the source · abstract, characters 676–949 · show in text ↑
e1

“First irrigation timings, viz. I1 , 7 days after sowing (DAS); I2 , 14 DAS and I3 , 21 DAS”

✓ located verbatim in the source · abstract, characters 158–248 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation 7 days after sowing gives maximum grain yield of 53.9 q/ha.

Taxon
Oryza sativaOryza sativat0
Treatment
7 days after sowinge1
Outcome
grain yielde0
Direction
maximume0
Value
53.9 q/hae0
Comparator
14 DAS and I3 , 21 DASe1

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e0

“crop-growth parameters (plant height, dry-matter accumulation, leaf-area index); yield attributes (effective tillers, grains/panicle, 1,000-grain weight); grain yield (53.9 q/ha); net returns (`71,326/ha) and benefit : cost (B : C) ratio (2.69) were maximum in I1 treatment”

✓ located verbatim in the source · abstract, characters 676–949 · show in text ↑
e1

“First irrigation timings, viz. I1 , 7 days after sowing (DAS); I2 , 14 DAS and I3 , 21 DAS”

✓ located verbatim in the source · abstract, characters 158–248 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation 7 days after sowing gives maximum net returns of 71,326/ha.

Taxon
Oryza sativaOryza sativat0
Treatment
7 days after sowinge1
Outcome
net returnse0
Direction
maximume0
Value
71,326/hae0
Comparator
14 DAS and I3 , 21 DASe1

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e0

“crop-growth parameters (plant height, dry-matter accumulation, leaf-area index); yield attributes (effective tillers, grains/panicle, 1,000-grain weight); grain yield (53.9 q/ha); net returns (`71,326/ha) and benefit : cost (B : C) ratio (2.69) were maximum in I1 treatment”

✓ located verbatim in the source · abstract, characters 676–949 · show in text ↑
e1

“First irrigation timings, viz. I1 , 7 days after sowing (DAS); I2 , 14 DAS and I3 , 21 DAS”

✓ located verbatim in the source · abstract, characters 158–248 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation 7 days after sowing gives maximum benefit to cost ratio of 2.69.

Taxon
Oryza sativaOryza sativat0
Treatment
7 days after sowinge1
Outcome
benefit : cost (B : C) ratioe0
Direction
maximume0
Value
2.69e0
Comparator
14 DAS and I3 , 21 DASe1

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e0

“crop-growth parameters (plant height, dry-matter accumulation, leaf-area index); yield attributes (effective tillers, grains/panicle, 1,000-grain weight); grain yield (53.9 q/ha); net returns (`71,326/ha) and benefit : cost (B : C) ratio (2.69) were maximum in I1 treatment”

✓ located verbatim in the source · abstract, characters 676–949 · show in text ↑
e1

“First irrigation timings, viz. I1 , 7 days after sowing (DAS); I2 , 14 DAS and I3 , 21 DAS”

✓ located verbatim in the source · abstract, characters 158–248 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combination pendimethalin with pyrazosulfuron and bispyribac gives the highest crop-growth parameters among herbicidal combinations.

Taxon
Oryza sativaOryza sativat0
Treatment
pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DASe2
Outcome
crop-growth parameterse2
Direction
higheste2
Comparator
herbicidal combinationse2

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e2

“Among the herbicidal combinations, crop-growth parameters, yield-attributing characters, grain yield (57.2 q/ha), net returns (` 79,800/ha), B : C ratio (3.18) and weed-control efficiency were recorded highest in pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DAS”

✓ located verbatim in the source · abstract, characters 951–1242 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same herbicide combination gives the highest yield-attributing characters among herbicidal combinations.

Taxon
Oryza sativaOryza sativat0
Treatment
pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DASe2
Outcome
yield-attributing characterse2
Direction
higheste2
Comparator
herbicidal combinationse2

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e2

“Among the herbicidal combinations, crop-growth parameters, yield-attributing characters, grain yield (57.2 q/ha), net returns (` 79,800/ha), B : C ratio (3.18) and weed-control efficiency were recorded highest in pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DAS”

✓ located verbatim in the source · abstract, characters 951–1242 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same herbicide combination gives the highest grain yield of 57.2 q/ha.

Taxon
Oryza sativaOryza sativat0
Treatment
pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DASe2
Outcome
grain yielde2
Direction
higheste2
Value
57.2 q/hae2
Comparator
herbicidal combinationse2

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e2

“Among the herbicidal combinations, crop-growth parameters, yield-attributing characters, grain yield (57.2 q/ha), net returns (` 79,800/ha), B : C ratio (3.18) and weed-control efficiency were recorded highest in pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DAS”

✓ located verbatim in the source · abstract, characters 951–1242 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same herbicide combination gives the highest net returns of 79,800/ha.

Taxon
Oryza sativaOryza sativat0
Treatment
pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DASe2
Outcome
net returnse2
Direction
higheste2
Value
79,800/hae2
Comparator
herbicidal combinationse2

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e2

“Among the herbicidal combinations, crop-growth parameters, yield-attributing characters, grain yield (57.2 q/ha), net returns (` 79,800/ha), B : C ratio (3.18) and weed-control efficiency were recorded highest in pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DAS”

✓ located verbatim in the source · abstract, characters 951–1242 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same herbicide combination gives the highest benefit to cost ratio of 3.18.

Taxon
Oryza sativaOryza sativat0
Treatment
pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DASe2
Outcome
B : C ratioe2
Direction
higheste2
Value
3.18e2
Comparator
herbicidal combinationse2

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e2

“Among the herbicidal combinations, crop-growth parameters, yield-attributing characters, grain yield (57.2 q/ha), net returns (` 79,800/ha), B : C ratio (3.18) and weed-control efficiency were recorded highest in pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DAS”

✓ located verbatim in the source · abstract, characters 951–1242 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same herbicide combination gives the highest weed-control efficiency.

Taxon
Oryza sativaOryza sativat0
Treatment
pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DASe2
Outcome
weed-control efficiencye2
Direction
higheste2
Comparator
herbicidal combinationse2

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e2

“Among the herbicidal combinations, crop-growth parameters, yield-attributing characters, grain yield (57.2 q/ha), net returns (` 79,800/ha), B : C ratio (3.18) and weed-control efficiency were recorded highest in pendimethalin 750 g/ha + pyrazosulfuron 20 g/ha + bispyribac 25 g/ha at 25 DAS”

✓ located verbatim in the source · abstract, characters 951–1242 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Inclusion of bispyribac with other herbicides performs better in direct-seeded rice.

Taxon
Oryza sativaOryza sativat0
Treatment
Inclusion of bispyribace3
Outcome
performed bettere3
Direction
bettere3
Comparator
other herbicidese3

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

t0

“direct-seeded rice (Oryza sativa)”

✓ located verbatim in the source · title, characters 72–105 · show in text ↑
e3

“Inclusion of bispyribac with other herbicides performed better in direct-seeded rice”

✓ located verbatim in the source · abstract, characters 1244–1328 · show in text ↑

pendimethalin · growth · Oryza sativa (rice)Positive and negative results

25 papers: 21 positive, 4 negative or no effect

20 papers in the same direction as this paper · 4 in the opposite direction

  1. negative
  2. no effect
  3. no effect

21 papers more in this group

See all 25 papers →

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

34 papers: 31 positive, 3 negative or no effect

30 papers in the same direction as this paper · 3 reporting no difference from an alternative

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

30 papers more in this group

See all 34 papers →

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

34 papers: 32 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  3. positive

30 papers more in this group

See all 34 papers →

pendimethalin · weed · Oryza sativa (rice)Positive and negative results

128 papers: 125 positive, 3 negative or no effect

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

  1. negative
  2. negative
  3. no effect

124 papers more in this group

See all 128 papers →

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

135 papers: 126 positive, 9 negative or no effect

125 papers in the same direction as this paper · 5 in the opposite direction · 4 reporting no difference from an alternative

  1. positive
  2. positive
  3. no effect

131 papers more in this group

See all 135 papers →

bispyribac · growth · Oryza sativa (rice)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
    Sesbania cover crop plus herbicides reduced weed dry weight relative to sunnhemp treatment.

    Effect of live mulches, cover crops and herbicides on weed flora, growth and yield of direct-seeded rice (Oryza sativa) · 2024 · compared with sunnhemp (Crotalaria juncea L.) cover crop fb bispyribac Na 25 g/ha + azimsulfuron 30 g/ha at 15 DAS

    Same direction

See all 4 papers →

Pyrazosulfuron · growth · Oryza sativa (rice)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 →

Pyrazosulfuron · weed · Oryza sativa (rice)Results agree

30 papers: 30 positive, 0 negative or no effect

29 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

26 papers more in this group

See all 30 papers →

8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.