Abstract
Summary. No definite evidence of partial sterilisation with iodine was obtained when a number of different soils were treated with various combinations and strengths of iodine, the bacterial numbers with different treatments varying either very little or inconsistently. A suggestion of beneficial action with iodoform was obtained, if the right conditions could be found. Germination of tomato seeds in “sick” soils was not affected by treatment with iodine in sodium iodide, and the initial vigour of treated and untreated plants was very similar. The loss from “damping off” of tomato seedlings was not reduced by treatment before sowing, over a wide range of concentrations of iodine in sodium iodide. Germination of mustard is either inhibited or badly checked by strong doses of iodine. In the latter case some of the plants eventually make a striking recovery and ultimately surpass the untreated controls in green and dry weight. If some time elapses between treatment and sowing the toxic action of iodine disappears and the mustard is unaffected, showing neither the initial toxic effect nor the later recovery and stimulation. Barley is decidedly more sensitive than mustard to the toxic action of iodine, as germination is inhibited by a smaller dressing. With an amount of iodine that allows the seeds to germinate, though checking them badly, the plants frequently die off and never make the recovery nor show the stimulation of mustard under similar circumstances. With various intervals between treatment and sowing barley is still killed off at a time of sowing and with a strength of iodine that allows mustard to make its greatest recovery. The various means whereby iodine may be put out of action in the soil are discussed and the suggestion is made that iodine might possibly have some specific and effective action if means could be found to prevent it from being converted from the elemental state so rapidly as appears usually to be the case. Although no definite partial sterilisation effect has been obtained and though mustard and barley show little or no significant reaction, the possibility is not excluded that other agricultural crops, e.g . mangolds and sugar beet, might be benefited by the use of small amounts of iodine in addition to the usual fertilisers.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Iodine treatments gave no definite evidence of soil partial sterilization.
Not reportedTaxon
Verbatim
e0“No definite evidence of partial sterilisation with iodine was obtained when a number of different soils were treated with various combinations and strengths of iodine, the bacterial numbers with different treatments varying either very little or inconsistently.”
Claim · model-written summary
Iodoform showed a possible beneficial action under unspecified suitable conditions.
Not reportedTaxon
Verbatim
e0“A suggestion of beneficial action with iodoform was obtained, if the right conditions could be found.”
Claim · model-written summary
Iodine in sodium iodide did not affect tomato seed germination in sick soils.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- seedse0
- Treatment
- iodine in sodium iodidee0
- Outcome
- Germinatione0
- Direction
- not affectede0
- Setting
- “sick” soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Germination of tomato seeds in “sick” soils was not affected by treatment with iodine in sodium iodide”
Claim · model-written summary
Initial vigour was very similar between iodine treated and untreated tomato plants.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- iodine in sodium iodidee1
- Outcome
- initial vigoure0
- Direction
- very similare0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the initial vigour of treated and untreated plants was very similar.”
e1“Germination of tomato seeds in “sick” soils was not affected by treatment with iodine in sodium iodide”
Claim · model-written summary
Presowing iodine in sodium iodide did not reduce tomato seedling damping off losses.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- seedlingse0
- Treatment
- iodine in sodium iodidee0
- Outcome
- loss from “damping off”e0
- Direction
- not reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The loss from “damping off” of tomato seedlings was not reduced by treatment before sowing, over a wide range of concentrations of iodine in sodium iodide.”
Claim · model-written summary
Strong iodine doses inhibited or badly checked mustard germination.
- Taxon
- mustarde0
- Treatment
- strong doses of iodinee0
- Outcome
- Germinatione0
- Direction
- inhibited or badly checkede0
Not reportedComparator
Verbatim
e0“Germination of mustard is either inhibited or badly checked by strong doses of iodine.”
Claim · model-written summary
Some mustard plants exposed to strong iodine later surpassed untreated controls in green and dry weight.
Verbatim
e0“some of the plants eventually make a striking recovery and ultimately surpass the untreated controls in green and dry weight.”
e1“Germination of mustard is either inhibited or badly checked by strong doses of iodine.”
Claim · model-written summary
Delayed sowing removed iodine toxicity and later stimulation in mustard.
- Taxon
- mustarde0
- Treatment
- some time elapses between treatment and sowinge0
- Outcome
- mustard is unaffectede0
- Direction
- unaffectede0
Not reportedComparator
Verbatim
e0“If some time elapses between treatment and sowing the toxic action of iodine disappears and the mustard is unaffected, showing neither the initial toxic effect nor the later recovery and stimulation.”
Claim · model-written summary
Barley germination was inhibited by a smaller iodine dressing than mustard.
- Taxon
- Barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- iodinee0
- Outcome
- germinatione0
- Direction
- inhibitede0
- Qualifier
- smaller dressinge0
- Comparator
- mustarde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Barley is decidedly more sensitive than mustard to the toxic action of iodine, as germination is inhibited by a smaller dressing.”
Claim · model-written summary
Barley plants often died after iodine exposure at doses allowing germination, unlike mustard recovery.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- iodinee0
- Outcome
- plants frequently die offe0
- Comparator
- mustarde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With an amount of iodine that allows the seeds to germinate, though checking them badly, the plants frequently die off and never make the recovery nor show the stimulation of mustard under similar circumstances.”
e1“Barley is decidedly more sensitive than mustard to the toxic action of iodine”
Claim · model-written summary
Across treatment to sowing intervals, iodine still killed barley at a dose and timing that allowed maximal mustard recovery.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- iodinee0
- Outcome
- killed offe0
- Comparator
- mustarde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With various intervals between treatment and sowing barley is still killed off at a time of sowing and with a strength of iodine that allows mustard to make its greatest recovery.”
The same questions in other papers
diiodine · growth · Hordeum vulgare (barley)Positive and negative results
1 in the opposite direction
- positive
diiodine · growth · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
1 paper more in this group
See all 5 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.