Abstract
Summary For three seasons, six field trials were conducted in winter wheat ( Triticum aestivum ) at different sites in North Rhine‐Westphalia, Germany. The aim was to evaluate the performance of three varieties, which differ in their shading behaviour, in suppressing weeds under organic farming (Ökologischer Landbau) conditions and grown at three row spacings. The experimental factors were cultivar, row width and row orientation. Key parameters of crop and weed development, including ground cover and biomass, were assessed at different growth stages and analysed with anova . Growth of the site‐specific weed vegetation was significantly affected in five of six trials. Weed growth was reduced by cvs Astron and Pegassos compared with cv. Greif, and was lower at 12 cm compared with 24 cm row spacing. No effect of row orientation (East‐West, North‐South) on weed growth was observed. The more competitive cultivars Astron and Pegassos were taller than the less competitive cv. Greif and had higher ground cover and light interception, presumably induced by planophile leaf inclination and partly, in the case of cv. Astron, because of higher leaf area index (LAI). Narrow row spacing (12 cm), resulting in a more even spatial plant distribution, increased crop ground cover, LAI, dry matter and light interception. In two trials, the variety with planophile leaf inclination performed better at wider row spacing, suggesting that planophile wheat cultivars may be advantageous in wider row stands.
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Claims 5
Claim · model-written summary
Astron and Pegassos reduced weed growth compared with Greif.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- cvs Astron and Pegassose0
- Interactor
- Weede0weed
- Outcome
- Weed growthe0
- Direction
- reducede0
- Comparator
- cv. Greife0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed growth was reduced by cvs Astron and Pegassos compared with cv. Greif”
t0“winter wheat”
Claim · model-written summary
Weed growth was lower at 12 cm than at 24 cm row spacing.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- 12 cme0
- Interactor
- Weede1weed
- Outcome
- Weed growthe1
- Direction
- lowere0
- Comparator
- 24 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was lower at 12 cm compared with 24 cm row spacing”
t0“winter wheat”
e1“Weed growth was reduced by cvs Astron and Pegassos”
Claim · model-written summary
Row orientation showed no effect on weed growth.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- row orientatione0
- Interactor
- weede0weed
- Outcome
- weed growthe0
- Direction
- No effecte0
- Comparator
- East‐West, North‐Southe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No effect of row orientation (East‐West, North‐South) on weed growth was observed”
t0“winter wheat”
Claim · model-written summary
Competitive cultivars were taller and had higher cover and light interception than Greif.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- Astron and Pegassose0
- Outcome
- ground cover and light interceptione0
- Direction
- highere0
- Comparator
- cv. Greife0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The more competitive cultivars Astron and Pegassos were taller than the less competitive cv. Greif and had higher ground cover and light interception”
t0“winter wheat”
Claim · model-written summary
Narrow spacing increased crop ground cover, LAI, dry matter and light interception.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Narrow row spacing (12 cm)e0
- Outcome
- crop ground cover, LAI, dry matter and light interceptione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Narrow row spacing (12 cm), resulting in a more even spatial plant distribution, increased crop ground cover, LAI, dry matter and light interception”
t0“winter wheat”
The same questions in other papers
density · growth · Triticum aestivum (wheat)Positive and negative results
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- no effect
- positive
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