Abstract
Hemp is known to have a competitive advantage over weeds. Despite its suppressive ability, weed infestation remains an important issue during the early growth of the crop. The aim of this study was to determine the effect of fertilization and weed management on weed flora and hemp growth parameters during initial growth in the 2019 season. The experiment was laid out in a split-split plot design with three replicates: three hemp cultivars as main plots, three fertilization treatments as sub-plots and two sub-sub-plots (weedy, weed free). For the computation of height and biomass weight, 10 plants were randomly selected in each plot. Weed species were collected by quadrate and density and biomass weight were determined. ANOVA revealed that all factors and their interactions significantly affected plant traits. Hemp cultivars showed different competitive ability. ‘Futura 17’ reduced weed measurement traits better than ‘Uso 31’. Density and biomass of nitrophilous weeds increased with the higher N dose compared to control (up to 56% and 79% respectively), therefore negatively affecting the growth of the hemp plants. Further research is needed in order to identify useful information on interactions between weeds and hemp crop to address potential yield losses under different weed management systems.
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Claims 6
Claim · model-written summary
Hemp cultivar Futura 17 reduced weed measurement traits better than Uso 31.
- Taxon
- Hemp
Cannabis sativa subsp. sativat0 - Material
- Futura 17e1
- Interactor
- weede1weed
- Outcome
- weed measurement traitse1
- Direction
- reducede1
- Comparator
- Uso 31e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Flora of Hemp Crop”
e1“‘Futura 17’ reduced weed measurement traits better than ‘Uso 31’”
Claim · model-written summary
Hemp cultivars differed in competitive ability against weeds.
- Taxon
- Hemp cultivarsCannabis sativa subsp. sativae2
- Outcome
- competitive abilitye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Hemp cultivars showed different competitive ability”
Claim · model-written summary
All factors and their interactions significantly affected hemp plant traits.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- fertilization treatmentse2
- Outcome
- plant traitse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Flora of Hemp Crop”
e1“ANOVA revealed that all factors and their interactions significantly affected plant traits”
e2“three fertilization treatments as sub-plots”
Claim · model-written summary
Density of nitrophilous weeds increased with the higher N dose compared with control, by up to 56%.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- higher N dosee1
- Interactor
- nitrophilous weedse1weed
- Outcome
- Densitye1
- Direction
- increasede1
- Value
- 56%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Flora of Hemp Crop”
e1“Density and biomass of nitrophilous weeds increased with the higher N dose compared to control (up to 56% and 79% respectively)”
Claim · model-written summary
Biomass of nitrophilous weeds increased with the higher N dose compared with control, by up to 79%.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- higher N dosee1
- Interactor
- nitrophilous weedse1weed
- Outcome
- biomasse1
- Direction
- increasede1
- Value
- 79%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Weed Flora of Hemp Crop”
e1“Density and biomass of nitrophilous weeds increased with the higher N dose compared to control (up to 56% and 79% respectively)”
Claim · model-written summary
Increase of nitrophilous weeds negatively affected the growth of hemp plants.
- Taxon
- hemp plantsCannabis sativa subsp. sativae2
- Interactor
- nitrophilous weedse1weed
- Outcome
- growthe2
- Direction
- negatively affectinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Density and biomass of nitrophilous weeds increased with the higher N dose compared to control (up to 56% and 79% respectively)”
e2“therefore negatively affecting the growth of the hemp plants”
The same questions in other papers
nitrogen · growth · Cannabis sativaPositive and negative results
2 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 papers →nitrogen · pest · Cannabis sativaResults agree
1 paper in the same direction as this paper
- no effect
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.