Paper · 2006 · Agricultural science digest

WEED MANAGEMENT IN RICE AND ITS CARRY OVER EFFECT ON SUCCEEDING BLACK GRAM

I. Gnanavel; R. M. Kathiresan

5
claims
12
verbatim quotes
1
citations
2
research areas
—
Not open access

Abstract

Field experiments were conducted on weed control in rice-blackgram at Annamalai University Farm, Annamalainagar, India during 1999–2000. Among the rice weed control measures, hand weeding twice recorded the least weed counts (19.0 m−2) and weed dry matter production (300.2 kg ha−1) with maximum rice grain yield (5.91 t ha−1), which was at par to incorporation of 10 t pressmud ha−1 + 1 t Azolla ha−1 (5.72 t ha−1). The later had positive carry over effect on weed control in succeeding black gram also.

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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 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Hand weeding twice gave the fewest weeds in rice (19.0 m−2) among the rice weed control measures.

Treatment
hand weeding twicee7
Interactor
weede7weed
Outcome
weed countse7
Direction
leaste7
Value
19.0 m−2e7
Comparator
Among the rice weed control measurese2
Setting
Annamalai University Farm, Annamalainagar, Indiae0

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

e0

“Field experiments were conducted on weed control in rice-blackgram at Annamalai University Farm, Annamalainagar, India”

✓ located verbatim in the source · abstract, characters 0–118 · show in text ↑
e2

“Among the rice weed control measures”

✓ located verbatim in the source · abstract, characters 137–173 · show in text ↑
e7

“hand weeding twice recorded the least weed counts (19.0 m−2) and weed dry matter production (300.2 kg ha−1)”

✓ located verbatim in the source · abstract, characters 175–282 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Hand weeding twice gave the lowest weed dry matter production (300.2 kg ha−1) in rice.

Treatment
hand weeding twicee7
Interactor
weede7weed
Outcome
weed dry matter productione7
Direction
leaste7
Value
300.2 kg ha−1e7
Comparator
Among the rice weed control measurese2
Setting
Annamalai University Farm, Annamalainagar, Indiae0

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

e0

“Field experiments were conducted on weed control in rice-blackgram at Annamalai University Farm, Annamalainagar, India”

✓ located verbatim in the source · abstract, characters 0–118 · show in text ↑
e2

“Among the rice weed control measures”

✓ located verbatim in the source · abstract, characters 137–173 · show in text ↑
e7

“hand weeding twice recorded the least weed counts (19.0 m−2) and weed dry matter production (300.2 kg ha−1)”

✓ located verbatim in the source · abstract, characters 175–282 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Hand weeding twice gave the highest rice grain yield (5.91 t ha−1) among the rice weed control measures.

Treatment
hand weeding twicee7
Outcome
rice grain yielde4
Direction
maximume4
Value
5.91 t ha−1e4
Comparator
Among the rice weed control measurese2

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

e4

“with maximum rice grain yield (5.91 t ha−1)”

✓ located verbatim in the source · abstract, characters 283–326 · show in text ↑
e2

“Among the rice weed control measures”

✓ located verbatim in the source · abstract, characters 137–173 · show in text ↑
e7

“hand weeding twice recorded the least weed counts (19.0 m−2) and weed dry matter production (300.2 kg ha−1)”

✓ located verbatim in the source · abstract, characters 175–282 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Incorporation of 10 t pressmud ha−1 + 1 t Azolla ha−1 gave rice grain yield at par with hand weeding twice (5.72 t ha−1).

Treatment
incorporation of 10 t pressmud ha−1 + 1 t Azolla ha−1e5
Outcome
rice grain yielde5
Direction
at pare5
Value
5.72 t ha−1e5
Comparator
hand weeding twicee7

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

e5

“with maximum rice grain yield (5.91 t ha−1), which was at par to incorporation of 10 t pressmud ha−1 + 1 t Azolla ha−1 (5.72 t ha−1)”

✓ located verbatim in the source · abstract, characters 283–415 · show in text ↑
e7

“hand weeding twice recorded the least weed counts (19.0 m−2) and weed dry matter production (300.2 kg ha−1)”

✓ located verbatim in the source · abstract, characters 175–282 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Incorporation of pressmud and Azolla had a positive carry-over effect on weed control in succeeding black gram.

Taxon
black gramVigna mungoe6
Interactor
weede6weed
Outcome
weed controle6
Direction
positivee6

Not reportedTreatmentComparator

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

Vigna mungo
Vigna mungo · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e6

“The later had positive carry over effect on weed control in succeeding black gram also”

✓ located verbatim in the source · abstract, characters 417–503 · show in text ↑

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

47 papers: 43 positive, 4 negative or no effect

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

  1. positive
  2. positive
  3. positive

43 papers more in this group

See all 47 papers →

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

603 papers: 579 positive, 24 negative or no effect

578 papers in the same direction as this paper · 17 in the opposite direction · 7 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

599 papers more in this group

See all 603 papers →

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

802 papers: 725 positive, 77 negative or no effect

724 papers in the same direction as this paper · 57 in the opposite direction · 20 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

798 papers more in this group

See all 802 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.