Paper · 2015 · JOURNAL OF WEED SCIENCE RESEARCH

EFFECT OF SOWING METHODS AND MULCHING ON WEED DENSITY IN WHEAT CROP UNDER DEFICIT IRRIGATION

Abdul Razaq; M. J. Khan; Tahir Sarwar

7
claims
9
verbatim quotes
1
citations
2
research areas
—
Not open access

Abstract

Water scarcity, high temperature, poor sowing methods and weeds infestation are the limiting factors in crop production. To determine the effect of sowing methods and mulching on weed density in wheat crop under deficit irrigation, an experiment was conducted at New developmental Farm of The University of Agriculture Peshawar, Pakistan under clay loam soil conditions during 2011-12. The experiment was laid out in RCBD with split split plot arrangement having three replications. Three factors i.e. sowing methods, mulch and deficit irrigation with four levels i.e. full irrigation (DI0), 20% deficit (DI20), 40% deficit (DI40) and 60% deficit (DI60) were studied. Soil moisture was continuously monitored and full irrigation was determined on the basis of MAD 50%. Sowing methods were consisted of raised bed and flat bed cultivation while maize stover was used as mulch. Findings of the study indicated that sowing methods, mulching and irrigation levels had considerably influenced weed density, yield and yield components of wheat. Raised bed cultivation had more number of spikes m -2 , 1000-grain weight, grain yield and harvest index with lowest weed density as compared to traditional flat bed sowing. Likewise, application of maize stover @ 4 tons ha -1 as a surface mulch enhanced wheat yield and decreased weeds germination. In case of irrigation levels, full irrigation resulted an increase in weeds density, spikes m -2 , 1000grain weight, yield and harvest index of wheat crop. It was concluded that raise bed cultivation, mulching with maize stover and 20% deficit irrigation reduced weeds density and enhanced wheat yield under the semi arid environment of Khyber Pakhtunkhwa.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Raised beds produced more spikes per square metre, grain weight, yield and harvest index than flat beds.

Taxon
WHEAT CROPTriticum aestivumt0
Treatment
Raised bed cultivatione0
Outcome
number of spikes m -2 , 1000-grain weight, grain yield and harvest indexe0
Direction
moree0
Comparator
traditional flat bed sowinge0

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

“Raised bed cultivation had more number of spikes m -2 , 1000-grain weight, grain yield and harvest index with lowest weed density as compared to traditional flat bed sowing”

✓ located verbatim in the source · abstract, characters 1039–1211 · show in text ↑
t0

“EFFECT OF SOWING METHODS AND MULCHING ON WEED DENSITY IN WHEAT CROP UNDER DEFICIT IRRIGATION”

✓ located verbatim in the source · title, characters 0–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Raised beds had the lowest weed density compared with flat beds.

Taxon
WHEAT CROPTriticum aestivumt0
Treatment
Raised bed cultivatione0
Interactor
weede0weed
Outcome
weed densitye0
Direction
loweste0
Comparator
traditional flat bed sowinge0

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

“Raised bed cultivation had more number of spikes m -2 , 1000-grain weight, grain yield and harvest index with lowest weed density as compared to traditional flat bed sowing”

✓ located verbatim in the source · abstract, characters 1039–1211 · show in text ↑
t0

“EFFECT OF SOWING METHODS AND MULCHING ON WEED DENSITY IN WHEAT CROP UNDER DEFICIT IRRIGATION”

✓ located verbatim in the source · title, characters 0–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize stover surface mulch increased wheat yield.

Treatment
maize stover @ 4 tons ha -1 as a surface mulche0
Outcome
wheat yielde0
Direction
enhancede0

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

“application of maize stover @ 4 tons ha -1 as a surface mulch enhanced wheat yield and decreased weeds germination”

✓ located verbatim in the source · abstract, characters 1223–1337 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize stover surface mulch reduced weed germination.

Treatment
maize stover @ 4 tons ha -1 as a surface mulche0
Interactor
weedse0weed
Outcome
weeds germinatione0
Direction
decreasede0

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

“application of maize stover @ 4 tons ha -1 as a surface mulch enhanced wheat yield and decreased weeds germination”

✓ located verbatim in the source · abstract, characters 1223–1337 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Full irrigation increased weed density.

Treatment
full irrigatione0
Interactor
weedse0weed
Outcome
weeds densitye0
Direction
increasee0

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

“full irrigation resulted an increase in weeds density, spikes m -2 , 1000grain weight, yield and harvest index of wheat crop”

✓ located verbatim in the source · abstract, characters 1369–1493 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Full irrigation increased wheat spikes, grain weight, yield and harvest index.

Treatment
full irrigatione0
Outcome
spikes m -2 , 1000grain weight, yield and harvest indexe0
Direction
increasee0

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

“full irrigation resulted an increase in weeds density, spikes m -2 , 1000grain weight, yield and harvest index of wheat crop”

✓ located verbatim in the source · abstract, characters 1369–1493 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Authors conclude raised beds, maize stover mulch and 20% deficit irrigation reduce weeds and improve wheat yield in Khyber Pakhtunkhwa.

Treatment
raise bed cultivation, mulching with maize stover and 20% deficit irrigatione0
Outcome
reduced weeds density and enhanced wheat yielde0
Setting
Khyber Pakhtunkhwae0

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

“raise bed cultivation, mulching with maize stover and 20% deficit irrigation reduced weeds density and enhanced wheat yield under the semi arid environment of Khyber Pakhtunkhwa”

✓ located verbatim in the source · abstract, characters 1517–1694 · show in text ↑

Zea mays · yield · Triticum aestivum (wheat)Positive and negative results

61 papers: 52 positive, 9 negative or no effect

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

  1. negative
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  3. negative

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Zea mays · weed · Triticum aestivum (wheat)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
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mulching · weed · Triticum aestivum (wheat)Results differ

27 papers: 22 positive, 5 negative or no effect

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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. negative
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irrigation · weed · Triticum aestivum (wheat)Positive and negative results

23 papers: 15 positive, 8 negative or no effect

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

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

149 papers: 137 positive, 12 negative or no effect

136 papers in the same direction as this paper · 11 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

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

989 papers: 798 positive, 191 negative or no effect

797 papers in the same direction as this paper · 184 in the opposite direction · 7 reporting no difference from an alternative

  1. negative
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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. negative
  2. negative
  3. negative

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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.