Abstract
1. Several authors have previously reported that the sulphuric acid treatment of the cotton seed resulted in: ( a ) earlier germination, ( b ) higher percentage of seeds germinating, ( c ) higher yield of seed cotton per acre, and ( d ) better and more uniform planting (this paper is not concerned with the disinfecting effect of this process). 2. A series of experiments, both in the laboratory and under field conditions have been carried out to determine whether the above statements are in agreement with actual experimental data. 3. In so far as the rate of germination is concerned, it was found that: ( a ) untreated seeds often show a smaller percentage of germination than seeds treated with sulphuric acid for various time-intervals, particularly when tested in the laboratory; ( b ) cotton seed treated with the reagent for from 5 min. to 2 hr. or even 5 hr. in some cases, does not show any decrease in its germinative value as determined by laboratory tests. In field trials seeds treated for 5 or 12 hr. practically do not germinate at all, whereas the 2 hr. treatment often shows a small decline in germination; ( c ) an enormous difference in the rate of germination has been revealed between the laboratory determinations on the one hand and the field determinations on the other.
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Claims 5
Claim · model-written summary
Untreated cotton seeds often showed a smaller percentage of germination than seeds treated with sulphuric acid for various times, particularly in laboratory tests.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- sulphuric acide0
- Outcome
- percentage of germinatione0
- Direction
- smallere0
- Comparator
- untreated seedse0
- Setting
- laboratorye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“untreated seeds often show a smaller percentage of germination than seeds treated with sulphuric acid for various time-intervals, particularly when tested in the laboratory”
t0“Cotton”
Claim · model-written summary
Cotton seed treated with sulphuric acid for 5 min to 2 hr, or in some cases 5 hr, showed no decrease in germinative value in laboratory tests.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- treated with the reagent for from 5 min. to 2 hr. or even 5 hr.e0
- Outcome
- germinative valuee0
- Direction
- no_changeinferrede0
- Setting
- laboratory testse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cotton seed treated with the reagent for from 5 min. to 2 hr. or even 5 hr. in some cases, does not show any decrease in its germinative value as determined by laboratory tests”
Claim · model-written summary
In field trials, cotton seeds treated with sulphuric acid for 5 or 12 hr practically did not germinate at all.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- treated for 5 or 12 hre0
- Outcome
- do not germinatee0
- Direction
- decreaseinferrede0
- Setting
- field trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field trials seeds treated for 5 or 12 hr. practically do not germinate at all”
t0“Cotton”
Claim · model-written summary
Cotton seeds given the 2 hr sulphuric acid treatment often showed a small decline in germination.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- 2 hr. treatmente0
- Outcome
- germinatione0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 2 hr. treatment often shows a small decline in germination”
t0“Cotton”
Claim · model-written summary
The rate of germination of cotton seed differed enormously between laboratory determinations and field determinations.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- rate of germinatione0
- Setting
- laboratory determinationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an enormous difference in the rate of germination has been revealed between the laboratory determinations on the one hand and the field determinations on the other”
t0“Cotton”
The same questions in other papers
sulfuric acid · growth · Gossypium hirsutum (cotton)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- 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.