Claim · model-written summary
Weed biomass in intercrops was 58% lower than in the less weed-suppressive sole crop.
- Taxon
- annual arable intercropse0
- Treatment
- intercrope1
- Interactor
- weede1weed
- Outcome
- weed biomasse1
- Direction
- lowere1
- Value
- 58%e1
- Comparator
- less suppressive sole crope1
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleSettingQualifier
Verbatim
e0“quantify the effect of intercropping on weed biomass in annual arable intercrops grown for their final product”
e1“On average, weed biomass in the intercrop was substantially and significantly (58%) lower (Rweak = 0.42) than in the less suppressive sole crop”
Title
Annual intercropping suppresses weeds: A meta-analysis
Chunfeng Gu; Lammert Bastiaans; Niels P.R. Anten; et al. Agriculture Ecosystems & Environment 2021. doi:10.1016/j.agee.2021.107658
Other claims from this paper (11)
- Intervention effect Weed biomass in intercrops did not differ from the more weed-suppressive sole crop.
- Observation Weed suppression findings were consistent across maize/legume and small-grain cereal/legume intercrops.
- Intervention effect Intercrops with an additive design had stronger weed suppression than intercrops with a replacement design.
- Intervention effect In replacement intercrops, a mixed arrangement gave stronger weed suppression than a row design.
- Intervention effect Spatial arrangement did not affect weed suppressive ability in additive intercrops.
- Intervention effect Simultaneous and relay intercropping had no significant effect on weed biomass.
- Intervention effect Nitrogen fertilizer input had no significant effect on weed biomass.
- Association Rweak decreased significantly with land equivalent ratio in additive intercrops.
- Association Rweak was not related to land equivalent ratio in replacement intercrops.
- Association Rstrong was unrelated to land equivalent ratio in both designs.
- Recommendation Intercropping is generally a useful approach for suppressing weeds in annual crop cultivation.