Abstract
The industrial hemp market is rapidly expanding, and best crop practices need to be assessed. This study aimed to determine the effect of fertilization and weed management on hemp crops and weed flora during the 2019 and 2020 growing seasons. Field experiments were laid out in a split–split plot design with three replicates: two hemp cultivars as main plots, three fertilization treatments as sub-plots, and three sub-sub-plots (weedy, weed-free, and herbicide application). For the computation of crop traits, 10 plants were randomly selected by each plot. Weed species were collected by quadrate for density and biomass weight determination. Increased fertilization rate positively affected plant height and dry biomass, while no impact was recorded on yield and yield components. The density and biomass of nitrophilous weeds were enhanced by fertilization, negatively affecting hemp growth. Marked differences were recorded on the competitive ability of cultivars since “Fedora 17” decreased the weed studied traits better than “Uso 31”. Herbicide application decreased the biomass of annual and perennial weeds by 38% and 13%, respectively, while it caused a reduction in hemp growth and yield of “Uso 31” plants. Further research should be conducted to address hemp yield losses under different cultural practices and weed control systems.
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Claims 8
Claim · model-written summary
Increased fertilization rate increased plant height and dry biomass of hemp.
- Taxon
- hemp
Cannabis sativa subsp. sativae0 - Treatment
- fertilization ratee1
- Outcome
- plant height and dry biomasse1
- Direction
- increaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The industrial hemp market is rapidly expanding”
e1“Increased fertilization rate positively affected plant height and dry biomass, while no impact was recorded on yield and yield components”
Claim · model-written summary
Increased fertilization rate had no impact on hemp yield and yield components.
- Taxon
- hempCannabis sativa subsp. sativae0
- Treatment
- fertilization ratee1
- Outcome
- yield and yield componentse1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The industrial hemp market is rapidly expanding”
e1“Increased fertilization rate positively affected plant height and dry biomass, while no impact was recorded on yield and yield components”
Claim · model-written summary
Fertilization increased the density and biomass of nitrophilous weeds in hemp.
- Taxon
- hempCannabis sativa subsp. sativae0
- Treatment
- fertilizatione2
- Interactor
- nitrophilous weedse2weed
- Outcome
- density and biomass of nitrophilous weedse2
- Direction
- enhancede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The industrial hemp market is rapidly expanding”
e2“The density and biomass of nitrophilous weeds were enhanced by fertilization, negatively affecting hemp growth”
Claim · model-written summary
Nitrophilous weeds decreased hemp growth.
- Taxon
- hempCannabis sativa subsp. sativae0
- Interactor
- nitrophilous weedse2weed
- Outcome
- hemp growthe2
- Direction
- decreaseinferrede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The industrial hemp market is rapidly expanding”
e2“The density and biomass of nitrophilous weeds were enhanced by fertilization, negatively affecting hemp growth”
Claim · model-written summary
Cultivar Fedora 17 decreased weed traits more than cultivar Uso 31.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Fedora 17e3
- Interactor
- weede3weed
- Outcome
- weed studied traitse3
- Direction
- decreasede3
- Comparator
- Uso 31e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The industrial hemp market is rapidly expanding”
e3“Marked differences were recorded on the competitive ability of cultivars since “Fedora 17” decreased the weed studied traits better than “Uso 31””
Claim · model-written summary
Herbicide application decreased annual weed biomass by 38%.
- Taxon
- hempCannabis sativa subsp. sativae0
- Treatment
- Herbicide applicatione4
- Interactor
- weedse4weed
- Outcome
- biomass of annual and perennial weedse4
- Direction
- decreasede4
- Value
- 38%e4
- Qualifier
- annuale4
- Comparator
- weedye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The industrial hemp market is rapidly expanding”
e4“Herbicide application decreased the biomass of annual and perennial weeds by 38% and 13%, respectively, while it caused a reduction in hemp growth and yield of “Uso 31” plants”
e5“three sub-sub-plots (weedy, weed-free, and herbicide application)”
Claim · model-written summary
Herbicide application decreased perennial weed biomass by 13%.
- Taxon
- hempCannabis sativa subsp. sativae0
- Treatment
- Herbicide applicatione4
- Interactor
- weedse4weed
- Outcome
- biomass of annual and perennial weedse4
- Direction
- decreasede4
- Value
- 13%e4
- Qualifier
- perenniale4
- Comparator
- weedye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The industrial hemp market is rapidly expanding”
e4“Herbicide application decreased the biomass of annual and perennial weeds by 38% and 13%, respectively, while it caused a reduction in hemp growth and yield of “Uso 31” plants”
e5“three sub-sub-plots (weedy, weed-free, and herbicide application)”
Claim · model-written summary
Herbicide application reduced hemp growth and yield of cultivar Uso 31.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Uso 31e4
- Treatment
- Herbicide applicatione4
- Outcome
- hemp growth and yielde4
- Direction
- reductione4
- Comparator
- weedye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The industrial hemp market is rapidly expanding”
e4“Herbicide application decreased the biomass of annual and perennial weeds by 38% and 13%, respectively, while it caused a reduction in hemp growth and yield of “Uso 31” plants”
e5“three sub-sub-plots (weedy, weed-free, and herbicide application)”
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See all 31 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.