Paper · 2022 · Research on Crops

Effect of weed management practices on weed control efficiency, yield, nutrient uptake and economics of summer maize (Zea mays) under humid tropic conditions

K. R. CHAUHAN; H. F. PATEL; S. K. ATTAR

9
claims
19
verbatim quotes
1
citations
3
research areas
—
Not open access

Abstract

Weed management is the most challenging component of summer maize cultivation. Weeds that are not controlled compete for light and the crop’s nutrient and water resources, and yield losses may be up to 70% of the potential yield. The critical time for weed control in maize is between crop emergence and canopy closure. Therefore, a field experiment was conducted during summer, 2019 at the N. M. College of Agriculture Farm, Navsari Agricultural University, Gujarat, India to find effective weed management practice in summer maize cultivation. The treatments included various weed management strategies where pre and post emergence herbicides were either sprayed or integrated with hand weeding. The results revealed significantly higher grain and straw yield (6473 and 8041 kg/ha, respectively) with weed free, which was statistically at par with pendimethalin (CS) @ 1.5 kg/ha as pre-emergence (PE) + 1 hand weeding (HW) at 30 days after sowing (DAS). Among the weedicide treatments, minimum weed population at harvest, least dry weight of weeds, lowest weed index, highest weed control efficiency and maximum benefit cost ratio was recorded in pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DAS) which was followed by treatment T5 (Pendimethalin EC @ 1.0 kg/ ha as PE +1 HW at 30 DAS). Maximum nitrogen, phosphorus and potassium content in grain and straw was recorded in weed free plots which was statistically at par with treatment T6 where Pendimethalin (CS) @ 1.5 kg/ha was applied as pre-emergence and integrated with one hand weeding thirty days after sowing.

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Claims 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Weed-free plots gave significantly higher grain and straw yield (6473 and 8041 kg/ha).

Taxon
Zea maysZea mayst0
Treatment
weed freee1
Outcome
grain and straw yielde1
Direction
significantly highere1
Value
6473 and 8041 kg/hae1
Qualifier
respectivelye1
Setting
N. M. College of Agriculture Farm, Navsari Agricultural University, Gujarat, Indiae0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e0

“a field experiment was conducted during summer, 2019 at the N. M. College of Agriculture Farm, Navsari Agricultural University, Gujarat, India”

✓ located verbatim in the source · abstract, characters 331–473 · show in text ↑
e1

“The results revealed significantly higher grain and straw yield (6473 and 8041 kg/ha, respectively) with weed free, which was statistically at par with pendimethalin (CS) @ 1.5 kg/ha as pre-emergence (PE) + 1 hand weeding (HW) at 30 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 698–954 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Grain and straw yield under pendimethalin (CS) at 1.5 kg/ha plus one hand weeding were statistically at par with weed-free plots.

Taxon
Zea maysZea mayst0
Treatment
pendimethalin (CS) @ 1.5 kg/ha as pre-emergence (PE) + 1 hand weeding (HW) at 30 days after sowing (DAS)e1
Outcome
grain and straw yielde1
Direction
statistically at pare1
Comparator
weed freee1

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e1

“The results revealed significantly higher grain and straw yield (6473 and 8041 kg/ha, respectively) with weed free, which was statistically at par with pendimethalin (CS) @ 1.5 kg/ha as pre-emergence (PE) + 1 hand weeding (HW) at 30 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 698–954 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pendimethalin (CS) at 1.5 kg/ha as PE plus one HW at 30 DAS gave the minimum weed population at harvest among the weedicide treatments.

Taxon
Zea maysZea mayst0
Treatment
pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DASe2
Outcome
weed population at harveste2
Direction
minimume2
Comparator
weedicide treatmentse2

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e2

“Among the weedicide treatments, minimum weed population at harvest, least dry weight of weeds, lowest weed index, highest weed control efficiency and maximum benefit cost ratio was recorded in pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DAS) which was followed by treatment T5 (Pendimethalin EC @ 1.0 kg/ ha as PE +1 HW at 30 DAS)”

✓ located verbatim in the source · abstract, characters 956–1292 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pendimethalin (CS) at 1.5 kg/ha as PE plus one HW at 30 DAS gave the least dry weight of weeds among the weedicide treatments.

Taxon
Zea maysZea mayst0
Treatment
pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DASe2
Outcome
dry weight of weedse2
Direction
leaste2
Comparator
weedicide treatmentse2

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e2

“Among the weedicide treatments, minimum weed population at harvest, least dry weight of weeds, lowest weed index, highest weed control efficiency and maximum benefit cost ratio was recorded in pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DAS) which was followed by treatment T5 (Pendimethalin EC @ 1.0 kg/ ha as PE +1 HW at 30 DAS)”

✓ located verbatim in the source · abstract, characters 956–1292 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pendimethalin (CS) at 1.5 kg/ha as PE plus one HW at 30 DAS gave the lowest weed index among the weedicide treatments.

Taxon
Zea maysZea mayst0
Treatment
pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DASe2
Outcome
weed indexe2
Direction
loweste2
Comparator
weedicide treatmentse2

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e2

“Among the weedicide treatments, minimum weed population at harvest, least dry weight of weeds, lowest weed index, highest weed control efficiency and maximum benefit cost ratio was recorded in pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DAS) which was followed by treatment T5 (Pendimethalin EC @ 1.0 kg/ ha as PE +1 HW at 30 DAS)”

✓ located verbatim in the source · abstract, characters 956–1292 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pendimethalin (CS) at 1.5 kg/ha as PE plus one HW at 30 DAS gave the highest weed control efficiency among the weedicide treatments.

Taxon
Zea maysZea mayst0
Treatment
pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DASe2
Outcome
weed control efficiencye2
Direction
higheste2
Comparator
weedicide treatmentse2

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e2

“Among the weedicide treatments, minimum weed population at harvest, least dry weight of weeds, lowest weed index, highest weed control efficiency and maximum benefit cost ratio was recorded in pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DAS) which was followed by treatment T5 (Pendimethalin EC @ 1.0 kg/ ha as PE +1 HW at 30 DAS)”

✓ located verbatim in the source · abstract, characters 956–1292 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pendimethalin (CS) at 1.5 kg/ha as PE plus one HW at 30 DAS gave the maximum benefit cost ratio among the weedicide treatments.

Taxon
Zea maysZea mayst0
Treatment
pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DASe2
Outcome
benefit cost ratioe2
Direction
maximume2
Comparator
weedicide treatmentse2

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e2

“Among the weedicide treatments, minimum weed population at harvest, least dry weight of weeds, lowest weed index, highest weed control efficiency and maximum benefit cost ratio was recorded in pendimethalin (CS) @ 1.5 kg/ha as PE + 1 HW at 30 DAS) which was followed by treatment T5 (Pendimethalin EC @ 1.0 kg/ ha as PE +1 HW at 30 DAS)”

✓ located verbatim in the source · abstract, characters 956–1292 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen, phosphorus and potassium content in grain and straw was maximum in weed-free plots.

Taxon
Zea maysZea mayst0
Treatment
weed freee3
Outcome
nitrogen, phosphorus and potassium content in grain and strawe3
Direction
Maximume3

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e3

“Maximum nitrogen, phosphorus and potassium content in grain and straw was recorded in weed free plots which was statistically at par with treatment T6 where Pendimethalin (CS) @ 1.5 kg/ha was applied as pre-emergence and integrated with one hand weeding thirty days after sowing”

✓ located verbatim in the source · abstract, characters 1294–1572 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Pendimethalin (CS) at 1.5 kg/ha as PE plus one HW at 30 DAS was statistically at par with weed-free plots for nitrogen, phosphorus and potassium content in grain and straw.

Taxon
Zea maysZea mayst0
Treatment
Pendimethalin (CS) @ 1.5 kg/ha was applied as pre-emergence and integrated with one hand weeding thirty days after sowinge3
Outcome
nitrogen, phosphorus and potassium content in grain and strawe3
Direction
statistically at pare3
Comparator
weed free plotse3

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“summer maize (Zea mays)”

✓ located verbatim in the source · title, characters 104–127 · show in text ↑
e3

“Maximum nitrogen, phosphorus and potassium content in grain and straw was recorded in weed free plots which was statistically at par with treatment T6 where Pendimethalin (CS) @ 1.5 kg/ha was applied as pre-emergence and integrated with one hand weeding thirty days after sowing”

✓ located verbatim in the source · abstract, characters 1294–1572 · show in text ↑

pendimethalin · yield · Zea mays (maize)Results differ

54 papers: 52 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  3. positive

50 papers more in this group

See all 54 papers →

pendimethalin · nutrient: content · Zea mays (maize)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 reporting no difference from an alternative

  1. positive
  2. positive
See all 3 papers →

pendimethalin · weed · Zea mays (maize)Positive and negative results

44 papers: 43 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

40 papers more in this group

See all 44 papers →

herbicide · nutrient: content · Zea mays (maize)Positive and negative results

36 papers: 31 positive, 5 negative or no effect

4 papers in the same direction as this paper · 31 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

32 papers more in this group

See all 36 papers →

herbicide · weed · Zea mays (maize)Positive and negative results

406 papers: 360 positive, 46 negative or no effect

359 papers in the same direction as this paper · 36 in the opposite direction · 10 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

402 papers more in this group

See all 406 papers →

herbicide · yield · Zea mays (maize)Positive and negative results

651 papers: 500 positive, 151 negative or no effect

499 papers in the same direction as this paper · 127 in the opposite direction · 24 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

647 papers more in this group

See all 651 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.