Paper · 2023 · Indian Journal of Agronomy

Weed and nitrogen management in zero-till wheat (Triticum aestivum) grown after rice (Oryza sativa)

K.P.R. PRASANNA; A.R. SHARMA

7
claims
12
verbatim quotes
3
citations
2
research areas
✓
Open access

Abstract

An experiment was conducted during 2020–21 at the Rani Lakshmi Bai Central Agricultural University, Jhansi, Uttar Pradesh to study the effect of tillage, rice (Oryza sativa L.) residue, weed control and N fertilizer levels on weeds, and growth and yield of wheat (Triticum aestivum L.). Weed infestation in zero-tillage (ZT) wheat was significantly lower (16.7–27.6%), more so when rice-residue was retained on soil surface compared with conventional tillage (CT). Post-emergence application of sulfosulfuron + 2,4-D (ester) at 30 days after sowing (DAS) provided near weed-free conditions, and integration with hand-weeding at 45 DAS increased the grain yield of wheat marginally (3.7–4.2%). The grain yield increased significantly by 0.91–1.27 t/ha under ZT compared with CT (2.27 t/ ha), the greater response was obtained with ZT + rice-residue and additional N fertilizer (150 kg N/ha). Higher net returns (` 44,400 per ha) and net energy output (141,300 MJ/ha) under ZT + rice-residue with 150 kg N/ha showed the potential of this technology in the Bundelkhand region.

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Claims 7

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zero tillage reduced weed infestation by 16.7–27.6% relative to conventional tillage, especially with rice residue.

Treatment
zero-tillage (ZT)e0
Interactor
Weede0weed
Outcome
Weed infestatione0
Direction
lowere0
Value
16.7–27.6%e0
Qualifier
rice-residue was retained on soil surfacee0
Comparator
conventional tillage (CT)e0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Weed infestation in zero-tillage (ZT) wheat was significantly lower (16.7–27.6%), more so when rice-residue was retained on soil surface compared with conventional tillage (CT)”

✓ located verbatim in the source · abstract, characters 287–463 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sulfosulfuron plus 2,4-D at 30 days after sowing provided near weed-free conditions.

Treatment
sulfosulfuron + 2,4-D (ester) at 30 days after sowing (DAS)e0
Interactor
weede0weed
Outcome
near weed-free conditionse0

Not reportedComparatorDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Post-emergence application of sulfosulfuron + 2,4-D (ester) at 30 days after sowing (DAS) provided near weed-free conditions”

✓ located verbatim in the source · abstract, characters 465–589 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 42–67 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding hand weeding at 45 days after sowing marginally raised wheat grain yield by 3.7–4.2%.

Treatment
hand-weeding at 45 DASe0
Outcome
grain yield of wheate0
Direction
increasede0
Value
3.7–4.2%e0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“integration with hand-weeding at 45 DAS increased the grain yield of wheat marginally (3.7–4.2%)”

✓ located verbatim in the source · abstract, characters 595–691 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zero tillage significantly increased wheat grain yield by 0.91–1.27 t/ha relative to conventional tillage.

Treatment
ZTe0
Outcome
grain yielde0
Direction
increasede0
Value
0.91–1.27 t/hae0
Qualifier
2.27 t/ hae0
Comparator
CTe0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The grain yield increased significantly by 0.91–1.27 t/ha under ZT compared with CT (2.27 t/ ha)”

✓ located verbatim in the source · abstract, characters 693–789 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 42–67 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The greater yield response was with zero tillage, rice residue and 150 kg N/ha.

Treatment
ZT + rice-residue and additional N fertilizer (150 kg N/ha)e0
Outcome
greater responsee0
Direction
greatere0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the greater response was obtained with ZT + rice-residue and additional N fertilizer (150 kg N/ha)”

✓ located verbatim in the source · abstract, characters 791–889 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 42–67 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Zero tillage with rice residue and 150 kg N/ha had net returns of 44,400 per ha.

Treatment
ZT + rice-residue with 150 kg N/hae0
Outcome
net returnse0
Direction
Highere0
Value
44,400 per hae0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Higher net returns (` 44,400 per ha) and net energy output (141,300 MJ/ha) under ZT + rice-residue with 150 kg N/ha”

✓ located verbatim in the source · abstract, characters 891–1006 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 42–67 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Zero tillage with rice residue and 150 kg N/ha had net energy output of 141,300 MJ/ha.

Treatment
ZT + rice-residue with 150 kg N/hae0
Outcome
net energy outpute0
Direction
Highere0
Value
141,300 MJ/hae0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Higher net returns (` 44,400 per ha) and net energy output (141,300 MJ/ha) under ZT + rice-residue with 150 kg N/ha”

✓ located verbatim in the source · abstract, characters 891–1006 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 42–67 · show in text ↑

2,4-D · weed · Triticum aestivum (wheat)Positive and negative results

66 papers: 64 positive, 2 negative or no effect

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

  1. negative
  2. negative
  3. positive

62 papers more in this group

See all 66 papers →

ester · weed · Triticum aestivum (wheat)Results agree

10 papers: 10 positive, 0 negative or no effect

9 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

6 papers more in this group

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tillage · weed · Triticum aestivum (wheat)Results differ

183 papers: 126 positive, 57 negative or no effect

125 papers in the same direction as this paper · 56 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. positive
  3. negative

179 papers more in this group

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herbicide · yield · Triticum aestivum (wheat)Positive and negative results

563 papers: 466 positive, 97 negative or no effect

465 papers in the same direction as this paper · 87 in the opposite direction · 10 reporting no difference from an alternative

  1. positive
  2. positive
  3. negative

559 papers more in this group

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tillage · yield · Triticum aestivum (wheat)Positive and negative results

1,414 papers: 1,116 positive, 298 negative or no effect

1,115 papers in the same direction as this paper · 257 in the opposite direction · 41 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

1,410 papers more in this group

See all 1,414 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.