Paper · 2025 · Indian Journal of Weed Science

Weed dynamics and growth of soybean in response to different sowing dates and weed management treatments under rainfed conditions of Nagaland

G. Zion; L.T. Longkumer; John Debbarma; et al.

8
claims
11
verbatim quotes
1
citations
3
research areas
—
Not open access

Abstract

AbstractAn experiment was conducted at the School of Agricultural Sciences, Medziphema Campus, Nagaland University, Nagaland, India, during the Kharif seasons of 2021 and 2022. The objective was to examine the weed dynamics and the growth of soybean (Glycine max (L.) Merill) in response to different sowing dates and weed management treatments. A split-plot design was employed, with three sowing dates in the main plots and seven integrated weed management treatments in the sub-plots. The pooled results over the two years indicated that soybean sown on June 15 exhibited significantly lower total weed density and biomass and higher weed control efficiency. The June 15 sowing date also resulted in maximum soybean plant height, branches per plant, dry matter production, leaf area index, number of nodules, dry weight of nodules, seed yield and stover yield. Among the herbicide treatments, the sequential treatment of pre-emergence application (PE) pendimethalin 1000 g/ha followed by (fb) post-emergence application (PoE) of imazethapyr 100 g/ha at 20 days after sowing (DAS) recorded lower weed density, weed biomass, higher weed control efficiency with enhanced growth attributes and yield of soybean. It was concluded that early sowing (on June 15) and application of pendimethalin 1000 g/ha PE fb imazethapyr 100 g/ha PoE at 20 DAS, resulted in significant control of weeds and increased growth and yield of soybean.

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Claims 8

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Soybean sown on June 15 had significantly lower total weed density and biomass.

Taxon
soybeanGlycine maxe0
Treatment
sown on June 15e0
Outcome
total weed density and biomasse0
Direction
lowere0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“soybean sown on June 15 exhibited significantly lower total weed density and biomass and higher weed control efficiency”

✓ located verbatim in the source · abstract, characters 541–660 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Soybean sown on June 15 had higher weed control efficiency.

Taxon
soybeanGlycine maxe0
Treatment
sown on June 15e0
Outcome
weed control efficiencye0
Direction
highere0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“soybean sown on June 15 exhibited significantly lower total weed density and biomass and higher weed control efficiency”

✓ located verbatim in the source · abstract, characters 541–660 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The June 15 sowing date gave maximum soybean plant height, branches per plant and dry matter production.

Taxon
soybeanGlycine maxe0
Treatment
The June 15 sowing datee0
Outcome
plant height, branches per plant, dry matter productione1
Direction
maximume0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“The June 15 sowing date also resulted in maximum soybean”

✓ located verbatim in the source · abstract, characters 662–718 · show in text ↑
e1

“plant height, branches per plant, dry matter production”

✓ located verbatim in the source · abstract, characters 719–774 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The June 15 sowing date gave maximum soybean leaf area index, number of nodules and nodule dry weight.

Taxon
soybeanGlycine maxe0
Treatment
The June 15 sowing datee0
Outcome
leaf area index, number of nodules, dry weight of nodulese1
Direction
maximume0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“The June 15 sowing date also resulted in maximum soybean”

✓ located verbatim in the source · abstract, characters 662–718 · show in text ↑
e1

“leaf area index, number of nodules, dry weight of nodules”

✓ located verbatim in the source · abstract, characters 776–833 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The June 15 sowing date gave maximum soybean seed yield and stover yield.

Taxon
soybeanGlycine maxe0
Treatment
The June 15 sowing datee0
Outcome
seed yield and stover yielde1
Direction
maximume0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“The June 15 sowing date also resulted in maximum soybean”

✓ located verbatim in the source · abstract, characters 662–718 · show in text ↑
e1

“seed yield and stover yield”

✓ located verbatim in the source · abstract, characters 835–862 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sequential PE pendimethalin followed by PoE imazethapyr gave lower weed density and weed biomass in soybean.

Taxon
soybeanGlycine maxe0
Treatment
pre-emergence application (PE) pendimethalin 1000 g/ha followed by (fb) post-emergence application (PoE) of imazethapyr 100 g/ha at 20 days after sowing (DAS)e0
Outcome
weed density, weed biomasse0
Direction
lowere0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“the sequential treatment of pre-emergence application (PE) pendimethalin 1000 g/ha followed by (fb) post-emergence application (PoE) of imazethapyr 100 g/ha at 20 days after sowing (DAS) recorded lower weed density, weed biomass, higher weed control efficiency with enhanced growth attributes and yield of soybean”

✓ located verbatim in the source · abstract, characters 896–1209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sequential PE pendimethalin followed by PoE imazethapyr gave higher weed control efficiency in soybean.

Taxon
soybeanGlycine maxe0
Treatment
pre-emergence application (PE) pendimethalin 1000 g/ha followed by (fb) post-emergence application (PoE) of imazethapyr 100 g/ha at 20 days after sowing (DAS)e0
Outcome
weed control efficiencye0
Direction
highere0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“the sequential treatment of pre-emergence application (PE) pendimethalin 1000 g/ha followed by (fb) post-emergence application (PoE) of imazethapyr 100 g/ha at 20 days after sowing (DAS) recorded lower weed density, weed biomass, higher weed control efficiency with enhanced growth attributes and yield of soybean”

✓ located verbatim in the source · abstract, characters 896–1209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sequential PE pendimethalin followed by PoE imazethapyr gave enhanced growth attributes and yield of soybean.

Taxon
soybeanGlycine maxe0
Treatment
pre-emergence application (PE) pendimethalin 1000 g/ha followed by (fb) post-emergence application (PoE) of imazethapyr 100 g/ha at 20 days after sowing (DAS)e0
Outcome
growth attributes and yield of soybeane0
Direction
enhancede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“the sequential treatment of pre-emergence application (PE) pendimethalin 1000 g/ha followed by (fb) post-emergence application (PoE) of imazethapyr 100 g/ha at 20 days after sowing (DAS) recorded lower weed density, weed biomass, higher weed control efficiency with enhanced growth attributes and yield of soybean”

✓ located verbatim in the source · abstract, characters 896–1209 · show in text ↑

pendimethalin · yield · Glycine max (soybean)Results differ

47 papers: 37 positive, 10 negative or no effect

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

  1. positive
  2. positive
  3. positive

43 papers more in this group

See all 47 papers →

Imazethapyr · yield · Glycine max (soybean)Results differ

85 papers: 66 positive, 19 negative or no effect

65 papers in the same direction as this paper · 16 in the opposite direction · 3 reporting no difference from an alternative

  1. positive
  2. positive
  3. negative

81 papers more in this group

See all 85 papers →

pendimethalin · weed · Glycine max (soybean)Positive and negative results

50 papers: 44 positive, 6 negative or no effect

43 papers in the same direction as this paper · 2 in the opposite direction · 4 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

46 papers more in this group

See all 50 papers →

Imazethapyr · weed · Glycine max (soybean)Positive and negative results

68 papers: 64 positive, 4 negative or no effect

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

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

64 papers more in this group

See all 68 papers →

sowing time · symbiosis · Glycine max (soybean)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

sowing time · weed · Glycine max (soybean)Positive and negative results

9 papers: 8 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

sowing time · yield · Glycine max (soybean)Positive and negative results

207 papers: 115 positive, 92 negative or no effect

114 papers in the same direction as this paper · 89 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. negative
  3. positive

203 papers more in this group

See all 207 papers →

herbicide · weed · Glycine max (soybean)Positive and negative results

297 papers: 258 positive, 39 negative or no effect

257 papers in the same direction as this paper · 26 in the opposite direction · 13 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

293 papers more in this group

See all 297 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.