Abstract
Eight field experiments with hemp were conducted in Iowa in which was determined the effect of nitrogen, phosphorus, and potassium fertilizers on the relative numbers of male and female plants. Phosphorus produced a statistically significant increase in percentage of male plants in one experiment and a decrease in another. Potassium produced a significant increase in percentage of male plants in one experiment. No significant effects were produced by nitrogen. All differences due to fertilizers were small, the sex ratios varying but little between treatments.
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Claims 5
Claim · model-written summary
Phosphorus significantly increased the percentage of male hemp plants in one experiment.
- Taxon
- Hemp
Cannabis sativa subsp. sativat0 - Treatment
- Phosphoruse1
- Outcome
- percentage of male plantse1
- Direction
- increasee1
- Qualifier
- in one experimente1
- Setting
- Iowae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sex Expression of Hemp”
e0“Eight field experiments with hemp were conducted in Iowa”
e1“Phosphorus produced a statistically significant increase in percentage of male plants in one experiment”
Claim · model-written summary
Phosphorus decreased the percentage of male hemp plants in another experiment.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- Phosphoruse1
- Outcome
- percentage of male plantse1
- Direction
- decreasee2
- Qualifier
- in anothere2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sex Expression of Hemp”
e1“Phosphorus produced a statistically significant increase in percentage of male plants in one experiment”
e2“and a decrease in another”
Claim · model-written summary
Potassium significantly increased the percentage of male hemp plants in one experiment.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- Potassiume3
- Outcome
- percentage of male plantse3
- Direction
- increasee3
- Qualifier
- in one experimente3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sex Expression of Hemp”
e3“Potassium produced a significant increase in percentage of male plants in one experiment”
Claim · model-written summary
Nitrogen had no significant effect on the relative numbers of male and female hemp plants.
- Taxon
- HempCannabis sativa subsp. sativat0
- Treatment
- nitrogene4
- Outcome
- relative numbers of male and female plantse6
- Direction
- no_changeinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sex Expression of Hemp”
e4“No significant effects were produced by nitrogen”
e6“on the relative numbers of male and female plants”
Claim · model-written summary
Differences in hemp sex ratios due to fertilizers were small, with sex ratios varying little between treatments.
- Taxon
- HempCannabis sativa subsp. sativat0
- Outcome
- sex ratiose5
- Qualifier
- All differences due to fertilizers were smalle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sex Expression of Hemp”
e5“All differences due to fertilizers were small, the sex ratios varying but little between treatments”
The same questions in other papers
nitrogen · nutrient: content · Cannabis sativaPositive and negative results
2 in the opposite direction
- 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.