Paper · 1992 · Tropical Agriculture

Nutrient uptake by wheat and associated weeds as influenced by management practices

A.K. Johri; Govindra Singh; Deepak Sharma

4
claims
9
verbatim quotes
15
citations
2
research areas
✓
Open access

Abstract

A field experiment was conducted during November-May 1984 and 1985 to evaluate the effect of row spacing, seed rate, sowing method and weed control measures on the uptake of nutrients by different categories of weeds and the availability of nutrients to the crop. Closer row spacing, higher seed rate and cross-sowing significantly decreased the nutrient removal by grass and broad-leaf weeds, as well as by a sedge, compared with wider row spacing, normal seed rate and one-direction sowing, and resulted in higher nutrient uptake by the crop (.)

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Claims 4

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Closer row spacing significantly reduced nutrient removal by grass, broad-leaf and sedge weeds compared with wider spacing.

Treatment
Closer row spacinge0
Interactor
weedse0weed
Outcome
nutrient removal by grass and broad-leaf weeds, as well as by a sedgee0
Direction
decreasede0
Comparator
wider row spacinge0

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

“Closer row spacing, higher seed rate and cross-sowing significantly decreased the nutrient removal by grass and broad-leaf weeds, as well as by a sedge, compared with wider row spacing, normal seed rate and one-direction sowing”

✓ located verbatim in the source · abstract, characters 264–491 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 19–24 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Higher seed rate significantly reduced nutrient removal by weeds compared with normal seed rate.

Treatment
higher seed ratee0
Interactor
weedse0weed
Outcome
nutrient removal by grass and broad-leaf weeds, as well as by a sedgee0
Direction
decreasede0
Comparator
normal seed ratee0

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

“higher seed rate and cross-sowing significantly decreased the nutrient removal by grass and broad-leaf weeds, as well as by a sedge, compared with wider row spacing, normal seed rate and one-direction sowing”

✓ located verbatim in the source · abstract, characters 284–491 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 19–24 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Cross-sowing significantly reduced nutrient removal by weeds compared with one-direction sowing.

Treatment
cross-sowinge0
Interactor
weedse0weed
Outcome
nutrient removal by grass and broad-leaf weeds, as well as by a sedgee0
Direction
decreasede0
Comparator
one-direction 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

“cross-sowing significantly decreased the nutrient removal by grass and broad-leaf weeds, as well as by a sedge, compared with wider row spacing, normal seed rate and one-direction sowing”

✓ located verbatim in the source · abstract, characters 305–491 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 19–24 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The planting practices resulted in higher crop nutrient uptake.

Treatment
Closer row spacing, higher seed rate and cross-sowinge0
Outcome
nutrient uptake by the crope1
Direction
highere1

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

“Closer row spacing, higher seed rate and cross-sowing”

✓ located verbatim in the source · abstract, characters 264–317 · show in text ↑
e1

“resulted in higher nutrient uptake by the crop”

✓ located verbatim in the source · abstract, characters 497–543 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 19–24 · show in text ↑

density · nutrient: content · Triticum aestivum (wheat)Positive and negative results

20 papers: 16 positive, 4 negative or no effect

15 papers in the same direction as this paper · 4 in the opposite direction

  1. negative
  2. no effect
  3. negative

16 papers more in this group

See all 20 papers →

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

46 papers: 37 positive, 9 negative or no effect

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

  1. no effect
  2. no effect
  3. negative

42 papers more in this group

See all 46 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.