Paper · 2019 · Journal of Physics Conference Series

Studies on tillage, water regimes and weed management methods on weeds and transplanted rice

S. Krishnaprabu

5
claims
10
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by

Abstract

Abstract Field experiments were conducted during 2017 seasons study the effect of tillage, water regimes and weed management methods on weeds and transplanted rice. The design was split plot with combinations of tillage and water regimes as main plot treatments and weed management methods as subplot treatments. The weed biomass was significantly reduced and the rice performance was superior under intensive tillage (three ploughings followed by (fb) puddling), when compared to the conventional farmers practice of land preparation. Among the water regimes, continuous deep water ponding (> 7.5 cm water) either till panicle initiation or grain filling stage suppressed weed growth better than that under the recommended practice of maintaining about 5 cm water level with intermittent drainage. Weed control efficiency (WCE) was maximum under azimsulfuron 35 g/ha applied at 15 days after transplanting (DAT), followed by pre-plant application of oxyflourfen fb one hand weeding at 20 DAT.

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Claims 5

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Intensive tillage reduced weed biomass versus conventional farmer land preparation.

Taxon
transplanted ricet0
Treatment
intensive tillage (three ploughings followed by (fb) puddling)e0
Interactor
weedst0weed
Outcome
weed biomasse0
Direction
reducede0
Comparator
conventional farmers practice of land preparatione0

Verbatim

e0

“The weed biomass was significantly reduced and the rice performance was superior under intensive tillage (three ploughings followed by (fb) puddling), when compared to the conventional farmers practice of land preparation.”

✓ located verbatim in the source · abstract, characters 313–535 · show in text ↑
t0

“weeds and transplanted rice”

✓ located verbatim in the source · title, characters 65–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intensive tillage yielded superior rice performance versus conventional preparation.

Taxon
transplanted ricet0
Treatment
intensive tillage (three ploughings followed by (fb) puddling)e0
Outcome
rice performancee0
Direction
superiore0
Comparator
conventional farmers practice of land preparatione0

Verbatim

e0

“The weed biomass was significantly reduced and the rice performance was superior under intensive tillage (three ploughings followed by (fb) puddling), when compared to the conventional farmers practice of land preparation.”

✓ located verbatim in the source · abstract, characters 313–535 · show in text ↑
t0

“transplanted rice”

✓ located verbatim in the source · title, characters 75–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Deep continuous ponding until panicle initiation suppressed weed growth better than recommended intermittent drainage.

Taxon
transplanted ricet0
Treatment
continuous deep water ponding (> 7.5 cm water)e0
Interactor
weedst0weed
Outcome
weed growthe0
Direction
suppressede0
Qualifier
till panicle initiatione0
Comparator
recommended practice of maintaining about 5 cm water level with intermittent drainagee0

Verbatim

e0

“continuous deep water ponding (> 7.5 cm water) either till panicle initiation or grain filling stage suppressed weed growth better than that under the recommended practice of maintaining about 5 cm water level with intermittent drainage.”

✓ located verbatim in the source · abstract, characters 561–798 · show in text ↑
t0

“weeds and transplanted rice”

✓ located verbatim in the source · title, characters 65–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Deep continuous ponding until grain filling suppressed weed growth better than recommended intermittent drainage.

Taxon
transplanted ricet0
Treatment
continuous deep water ponding (> 7.5 cm water)e0
Interactor
weedst0weed
Outcome
weed growthe0
Direction
suppressede0
Qualifier
grain filling stagee0
Comparator
recommended practice of maintaining about 5 cm water level with intermittent drainagee0

Verbatim

e0

“continuous deep water ponding (> 7.5 cm water) either till panicle initiation or grain filling stage suppressed weed growth better than that under the recommended practice of maintaining about 5 cm water level with intermittent drainage.”

✓ located verbatim in the source · abstract, characters 561–798 · show in text ↑
t0

“weeds and transplanted rice”

✓ located verbatim in the source · title, characters 65–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Azimsulfuron at 15 DAT produced maximum weed control efficiency.

Taxon
transplanted ricet0
Treatment
azimsulfuron 35 g/ha applied at 15 days after transplanting (DAT)e0
Interactor
weedst0weed
Outcome
Weed control efficiency (WCE)e0
Direction
maximume0
Comparator
pre-plant application of oxyflourfen fb one hand weeding at 20 DATe0

Verbatim

e0

“Weed control efficiency (WCE) was maximum under azimsulfuron 35 g/ha applied at 15 days after transplanting (DAT), followed by pre-plant application of oxyflourfen fb one hand weeding at 20 DAT.”

✓ located verbatim in the source · abstract, characters 799–993 · show in text ↑
t0

“weeds and transplanted rice”

✓ located verbatim in the source · title, characters 65–92 · show in text ↑

azimsulfuron · weed · Oryza sativa (rice)Results agree

33 papers: 33 positive, 0 negative or no effect

32 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

29 papers more in this group

See all 33 papers →

tillage · weed · Oryza sativa (rice)Results differ

86 papers: 71 positive, 15 negative or no effect

70 papers in the same direction as this paper · 13 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
  2. positive
  3. negative

82 papers more in this group

See all 86 papers →

tillage · organism · Oryza sativa (rice)Positive and negative results

25 papers: 18 positive, 7 negative or no effect

17 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

21 papers more in this group

See all 25 papers →

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

146 papers: 129 positive, 17 negative or no effect

128 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. positive
  3. negative

142 papers more in this group

See all 146 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.