Abstract
Intercropping (IC) can reduce nitrogen fertilizer requirements, supress weeds, and improve crop yields and yield stability. Three field trials were conducted in Denmark in 2018 with intercropping and sole crops (SC) using spring wheat, barley, faba bean and field pea to compare productivity under five fertilizer levels.The trials were carried out using in a split-plot design with four. Anomalous weather during the 2018 cropping season created drought conditions and high temperatures above 31°C.No effect of fertilizer treatment was found, and total dry matter and grain yields were supressed in all systems. Wheat grain yields averaged 2.14 t ha−1 across systems, ranging from 1.58 t ha−1 as a component of the IC to 2.44 t ha−1 as SC, and barley grain yields averaged 2.35 t ha−1. Faba bean yielded 1.78 t ha−1 as SC, but failed in the IC. Pea failed in both systems. Intercropping barley with cover crops had no effect on grain yield or total dry matter. These results suggest that intercropping provided no production advantage during a drought and illuminate the need to continue conducting research and breeding on drought-resistant cultivars.
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Claims 11
Claim · model-written summary
Fertilizer treatment had no effect on total dry matter and grain yields in the intercropping and sole crop trials
- Taxon
- spring wheat, barley, faba bean and field peae0
- Treatment
- five fertilizer levelse0
- Outcome
- total dry matter and grain yieldse1
- Direction
- No effecte1
- Setting
- Denmarke0
Not reportedComparator
Verbatim
e0“Three field trials were conducted in Denmark in 2018 with intercropping and sole crops (SC) using spring wheat, barley, faba bean and field pea to compare productivity under five fertilizer levels”
e1“No effect of fertilizer treatment was found, and total dry matter and grain yields were supressed in all systems”
Claim · model-written summary
Total dry matter and grain yields were suppressed in all systems under drought and high temperature
Verbatim
e0“Three field trials were conducted in Denmark in 2018 with intercropping and sole crops (SC) using spring wheat, barley, faba bean and field pea to compare productivity under five fertilizer levels”
e1“No effect of fertilizer treatment was found, and total dry matter and grain yields were supressed in all systems”
e2“Anomalous weather during the 2018 cropping season created drought conditions and high temperatures above 31°C”
Claim · model-written summary
Wheat grain yield averaged 2.14 t ha−1 across systems
- Taxon
- Wheat
Triticum aestivume4 - Outcome
- grain yieldse4
- Value
- 2.14 t ha−1e4
- Qualifier
- across systemse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Wheat grain yields averaged 2.14 t ha−1 across systems, ranging from 1.58 t ha−1 as a component of the IC to 2.44 t ha−1 as SC, and barley grain yields averaged 2.35 t ha−1”
Claim · model-written summary
Wheat grain yield was lower in the intercrop component (1.58 t ha−1) than in sole crop (2.44 t ha−1)
- Taxon
- WheatTriticum aestivume4
- Treatment
- component of the ICe4
- Outcome
- grain yieldse4
- Direction
- lowerinferrede4
- Value
- 1.58 t ha−1e4
- Qualifier
- 2.44 t ha−1 as SCe4
- Comparator
- SCe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Wheat grain yields averaged 2.14 t ha−1 across systems, ranging from 1.58 t ha−1 as a component of the IC to 2.44 t ha−1 as SC, and barley grain yields averaged 2.35 t ha−1”
Claim · model-written summary
Barley grain yield averaged 2.35 t ha−1
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree4 - Outcome
- grain yieldse4
- Value
- 2.35 t ha−1e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e4“Wheat grain yields averaged 2.14 t ha−1 across systems, ranging from 1.58 t ha−1 as a component of the IC to 2.44 t ha−1 as SC, and barley grain yields averaged 2.35 t ha−1”
Claim · model-written summary
Faba bean yielded 1.78 t ha−1 in sole crop
- Taxon
- Faba bean
Vicia fabae5 - Outcome
- yielde5
- Value
- 1.78 t ha−1e5
- Qualifier
- as SCe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Faba bean yielded 1.78 t ha−1 as SC, but failed in the IC”
Claim · model-written summary
Faba bean failed in intercropping
- Taxon
- Faba beanVicia fabae5
- Outcome
- failede5
- Qualifier
- in the ICe5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Faba bean yielded 1.78 t ha−1 as SC, but failed in the IC”
Claim · model-written summary
Pea failed in both systems
- Taxon
- Pea
Lathyrus oleraceuse6 - Outcome
- failede6
- Qualifier
- in both systemse6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Pea failed in both systems”
Claim · model-written summary
Intercropping barley with cover crops had no effect on grain yield or total dry matter
- Taxon
- barleyHordeum vulgaree3
- Treatment
- Intercropping barley with cover cropse3
- Outcome
- grain yield or total dry mattere3
- Direction
- no effecte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Intercropping barley with cover crops had no effect on grain yield or total dry matter”
Claim · model-written summary
Intercropping provided no production advantage during a drought
- Taxon
- spring wheat, barley, faba bean and field peae0
- Treatment
- intercroppinge7
- Outcome
- production advantagee7
- Direction
- no_changeinferrede7
- Qualifier
- during a droughte7
Not reportedComparator
Verbatim
e0“Three field trials were conducted in Denmark in 2018 with intercropping and sole crops (SC) using spring wheat, barley, faba bean and field pea to compare productivity under five fertilizer levels”
e7“These results suggest that intercropping provided no production advantage during a drought and illuminate the need to continue conducting research and breeding on drought-resistant cultivars”
Claim · model-written summary
Research and breeding on drought-resistant cultivars should continue
Verbatim
e0“Three field trials were conducted in Denmark in 2018 with intercropping and sole crops (SC) using spring wheat, barley, faba bean and field pea to compare productivity under five fertilizer levels”
e7“These results suggest that intercropping provided no production advantage during a drought and illuminate the need to continue conducting research and breeding on drought-resistant cultivars”
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See all 550 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.