Paper · 2017 · Journal of Agronomy

Effect of Herbicides on the Density of Broad Leaf Weeds and their Effect on the Growth and Yield Components of Wheat (Triticum aestivum L.)

Hossein Mohammadi; B.S. Ismail

7
claims
13
verbatim quotes
7
citations
2
research areas
✓
Open access

Abstract

Objective: The aim of the study was to determine the effects of different herbicides on broadleaf weed density and growth as well as the growth and yield components of wheat. It also examined the effects of weed control (by herbicides and hand weeding) on the growth and yield of wheat, the economic benefits of weed control and aspects of environmental safety. Materials and Methods: This experiment was carried out at the Mullah Ghulam Agriculture Research Centre, Afghanistan. Four different types of herbicides namely, methyl chlorophenoxy acetic acid (MCPA) (Agroxone at 25 1 L haG 1 ), triasulfuron (Amber at g a.i kgG 1 ), tribenuron methyl (Express 25 g a.i kgG 1 ) and pyroxsulam (Merit at 240 g a.i kgG 1 ) were tested. The manufacturers recommended dosage for triasulfuron was applied at the rate of 120 L haG 1 . The other three post-emergence herbicides were applied at the rate of 350 L haG 1 . The herbicides were applied individually at 25 days after sowing (DAS). In another treatment, the weeds were hand weeded at 25, 50 and 75 DAS, while the control plots and were left unweeded. The data was analyzed using SPSS, one-way ANOVA and the Duncans test for comparison of means. Results: The results showed that the highest grain yield (2936 kg haG 1 ) was obtained from the hand weeded plots, where yields were significantly higher (p<0.05) than those of the other treatments. The lowest grain yield of wheat (1855.75 kg haG 1 ) was obtained from the unweeded plots. It was observed that the population density of the broad leaf weeds was lower in the hand weeded plots than that in the other treatment plots. It was observed that tribenuron methyl effectively controlled the weed density of Amaranthus bouchonii, Convolvulus arvensis, Acroptilon repense and Polygonum aviculare at 30 DAS. Conclusion: The study showed that the significantly higher hand weeding treatment followed by treatments with MCPA and triasulfuron herbicides were more effective in case of yield components of wheat and also decreased the population of broad leaf weeds.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 7

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Hand weeded plots gave the highest wheat grain yield, significantly higher than the other treatments.

Treatment
hand weeded plotse1
Outcome
grain yielde1
Direction
higheste1
Value
2936 kg haG 1e1
Comparator
other treatmentse1

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

“on the growth and yield of wheat”

✓ located verbatim in the source · abstract, characters 253–285 · show in text ↑
e1

“The results showed that the highest grain yield (2936 kg haG 1 ) was obtained from the hand weeded plots, where yields were significantly higher (p<0.05) than those of the other treatments”

✓ located verbatim in the source · abstract, characters 1203–1391 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Unweeded plots gave the lowest wheat grain yield (1855.75 kg/ha).

Treatment
unweeded plotse2
Outcome
grain yield of wheate2
Direction
loweste2
Value
1855.75 kg haG 1e2

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

“on the growth and yield of wheat”

✓ located verbatim in the source · abstract, characters 253–285 · show in text ↑
e2

“The lowest grain yield of wheat (1855.75 kg haG 1 ) was obtained from the unweeded plots”

✓ located verbatim in the source · abstract, characters 1393–1481 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Hand weeding gave a lower population density of broad-leaf weeds than the other treatment plots.

Treatment
hand weeded plotse3
Interactor
broad leaf weedse3weed
Outcome
population density of the broad leaf weedse3
Direction
lowere3
Comparator
other treatment plotse3

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

“on the growth and yield of wheat”

✓ located verbatim in the source · abstract, characters 253–285 · show in text ↑
e3

“It was observed that the population density of the broad leaf weeds was lower in the hand weeded plots than that in the other treatment plots”

✓ located verbatim in the source · abstract, characters 1483–1624 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tribenuron methyl effectively controlled the density of Amaranthus bouchonii and Convolvulus arvensis at 30 DAS.

Treatment
tribenuron methyle4
Interactor
Amaranthus bouchoniiAmaranthus powellii subsp. bouchoniie4weed
Second interactor
Convolvulus arvensisConvolvulus arvensise4weed
Outcome
weed densitye4
Direction
effectively controllede4
Qualifier
30 DASe4

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 ↗
Amaranthus powellii subsp. bouchonii
Amaranthus powellii subsp. bouchonii · Interactor · picture of the speciesStefan.lefnaer · CC BY-SA 4.0 · Wikimedia Commons ↗
Convolvulus arvensis
Convolvulus arvensis · Second interactorW. Bulach · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“on the growth and yield of wheat”

✓ located verbatim in the source · abstract, characters 253–285 · show in text ↑
e4

“It was observed that tribenuron methyl effectively controlled the weed density of Amaranthus bouchonii, Convolvulus arvensis, Acroptilon repense and Polygonum aviculare at 30 DAS”

✓ located verbatim in the source · abstract, characters 1626–1804 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tribenuron methyl effectively controlled the density of Acroptilon repense and Polygonum aviculare at 30 DAS.

Treatment
tribenuron methyle4
Interactor
Acroptilon repensee4weed
Second interactor
Polygonum avicularePolygonum avicularee4weed
Outcome
weed densitye4
Direction
effectively controllede4
Qualifier
30 DASe4

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 ↗
Polygonum aviculare
Polygonum aviculare · Second interactorDalgial · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“on the growth and yield of wheat”

✓ located verbatim in the source · abstract, characters 253–285 · show in text ↑
e4

“It was observed that tribenuron methyl effectively controlled the weed density of Amaranthus bouchonii, Convolvulus arvensis, Acroptilon repense and Polygonum aviculare at 30 DAS”

✓ located verbatim in the source · abstract, characters 1626–1804 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

MCPA and triasulfuron herbicides were more effective than hand weeding for wheat yield components.

Treatment
MCPA and triasulfuron herbicidese5
Outcome
yield components of wheate5
Direction
more effectivee5
Comparator
hand weeding treatmente5

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

e5

“the significantly higher hand weeding treatment followed by treatments with MCPA and triasulfuron herbicides were more effective in case of yield components of wheat and also decreased the population of broad leaf weeds”

✓ located verbatim in the source · abstract, characters 1840–2059 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

MCPA and triasulfuron herbicides decreased the population of broad-leaf weeds.

Treatment
MCPA and triasulfuron herbicidese5
Interactor
broad leaf weedse5weed
Outcome
population of broad leaf weedse5
Direction
decreasede5

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

“on the growth and yield of wheat”

✓ located verbatim in the source · abstract, characters 253–285 · show in text ↑
e5

“the significantly higher hand weeding treatment followed by treatments with MCPA and triasulfuron herbicides were more effective in case of yield components of wheat and also decreased the population of broad leaf weeds”

✓ located verbatim in the source · abstract, characters 1840–2059 · show in text ↑

triasulfuron · weed · Triticum aestivum (wheat)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

tribenuron methyl · weed · Triticum aestivum (wheat)Positive and negative results

10 papers: 9 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

6 papers more in this group

See all 10 papers →

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

11 papers: 9 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  3. positive

7 papers more in this group

See all 11 papers →

(4-chloro-2-methylphenoxy)acetic acid · weed · Triticum aestivum (wheat)Positive and negative results

11 papers: 10 positive, 1 negative or no effect

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

  1. negative
    MCPA gave poor weed control.

    Evaluating on Herbicide Efficacy against Galium aparina L. in Wheat Fields · 2007 · compared with different temperature conditions

    Opposite direction

  2. positive
  3. positive

7 papers more in this group

See all 11 papers →

(4-chloro-2-methylphenoxy)acetic acid · yield · Triticum aestivum (wheat)Positive and negative results

29 papers: 14 positive, 15 negative or no effect

13 papers in the same direction as this paper · 15 in the opposite direction

  1. negative
  2. negative
  3. no effect

25 papers more in this group

See all 29 papers →

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

401 papers: 362 positive, 39 negative or no effect

361 papers in the same direction as this paper · 34 in the opposite direction · 5 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

397 papers more in this group

See all 401 papers →

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. negative
  3. no effect

559 papers more in this group

See all 563 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.