Abstract
The investigation of hemp crop weediness was carried out at the Upytė Experimental Station of the Lithuanian Research Centre for Agriculture and Forestry in 2014. Bi-factorial trial was carried out: Factor A – variety (A1 – USO 31; A2 – Bialobrzeskie); Factor B – sowing rate (B1 – 45 kg ha-1; B2 – 70 kg ha-1). Data showed that seed rate had a significant influence on crop density at full hemp emergence as well as at harvesting time. Rainy vegetation period was favourable not only for hemp growing, but for weeds as well. Crop density (resulted by seed rate) had a significant influence on crop weediness – significantly more weeds (in average 166 plants m-2) were found in the plots with seed rate of 45 kg ha-1, consequently at lower crop density, and under 140 weed plants m-2 were found in the plots with seed rate of 70 kg ha-1, consequently at higher crop density. Hemp crop weediness at harvesting time was much lower than that at the beginning of vegetation; reduction of weediness over the vegetation period was close to 87-90 percent.
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Claims 7
Claim · model-written summary
Seed rate significantly affected hemp density at full emergence.
- Taxon
- hemp
Cannabis sativa subsp. sativae0 - Treatment
- seed ratee0
- Outcome
- crop density at full hemp emergencee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data showed that seed rate had a significant influence on crop density at full hemp emergence as well as at harvesting time.”
Claim · model-written summary
Seed rate significantly affected hemp density at harvest.
- Taxon
- hempCannabis sativa subsp. sativae0
- Treatment
- seed ratee0
- Outcome
- crop densitye0
- Qualifier
- harvesting timee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data showed that seed rate had a significant influence on crop density at full hemp emergence as well as at harvesting time.”
Claim · model-written summary
The rainy vegetation period favored hemp growth.
- Taxon
- hempCannabis sativa subsp. sativae0
- Outcome
- hemp growinge0
- Direction
- favourablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rainy vegetation period was favourable not only for hemp growing, but for weeds as well.”
Claim · model-written summary
The rainy vegetation period also favored weeds in hemp.
- Taxon
- hempCannabis sativa subsp. sativae0
- Interactor
- weedse0weed
- Outcome
- weedse0
- Direction
- favourablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rainy vegetation period was favourable not only for hemp growing, but for weeds as well.”
Claim · model-written summary
At 45 kg ha-1, hemp plots had significantly more weeds, averaging 166 plants m-2, than at 70 kg ha-1.
- Taxon
- hempCannabis sativa subsp. sativat0
- Treatment
- seed rate of 45 kg ha-1e0
- Interactor
- weedse0weed
- Outcome
- weedse0
- Direction
- moree0
- Value
- 166 plants m-2e0
- Comparator
- seed rate of 70 kg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly more weeds (in average 166 plants m-2) were found in the plots with seed rate of 45 kg ha-1, consequently at lower crop density, and under 140 weed plants m-2 were found in the plots with seed rate of 70 kg ha-1, consequently at higher crop density.”
t0“hemp”
Claim · model-written summary
At 70 kg ha-1, hemp plots had under 140 weed plants m-2.
- Taxon
- hempCannabis sativa subsp. sativat0
- Treatment
- seed rate of 70 kg ha-1e0
- Interactor
- weede0weed
- Outcome
- weed plantse0
- Value
- under 140 weed plants m-2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under 140 weed plants m-2 were found in the plots with seed rate of 70 kg ha-1, consequently at higher crop density.”
t0“hemp”
Claim · model-written summary
Hemp weediness fell about 87-90 percent by harvest relative to early vegetation.
- Taxon
- HempCannabis sativa subsp. sativae0
- Interactor
- weedinesse0weed
- Outcome
- crop weedinesse0
- Direction
- much lowere0
- Value
- 87-90 percente0
- Comparator
- beginning of vegetatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hemp crop weediness at harvesting time was much lower than that at the beginning of vegetation; reduction of weediness over the vegetation period was close to 87-90 percent.”
The same questions in other papers
density · weed · Cannabis sativaPositive and negative results
3 in the opposite direction
- positive
- positive
- positive
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.