Abstract
Summary Symptoms of magnesium deficiency and take-all disease occurred during 1967 in wheat grown for the second year in succession on the ‘Classical’ cereal site at Woburn. Magnesium fertilizers, which cured the deficiency symptoms and increased wheat yields in 1968 and 1969, had no effect on take-all. Leaves from crops severely attacked by take-all contained less nitrogen and potassium than leaves from unattacked plants but not less magnesium. In 1969 magnesium fertilizer did not increase yields or affect takeall of spring barley on the site but, in contrast to 1968, increased potato yields. Magnesium fertilizer improved the establishment of clover, especially on soil containing least magnesium. Soil analyses show a tenfold decline in exchangeable Mg since 1888. Losses were most from soil given ammonium sulphate and more from the site where wheat was long grown than where barley was. Differences in soil magnesium did not explain large differences in yields of potatoes or leys between blocks of the experiments.
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Claims 15
Claim · model-written summary
Symptoms of magnesium deficiency and take-all disease occurred in wheat in 1967 on the Classical cereal site at Woburn
- Taxon
- wheat
Triticum aestivume1 - Interactor
- take-alle1pathogen
- Outcome
- Symptoms of magnesium deficiency and take-all diseasee1
- Setting
- Woburne1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Symptoms of magnesium deficiency and take-all disease occurred during 1967 in wheat grown for the second year in succession on the ‘Classical’ cereal site at Woburn”
Claim · model-written summary
Magnesium fertilizers cured magnesium deficiency symptoms in wheat in 1968 and 1969
- Taxon
- wheatTriticum aestivume1
- Treatment
- Magnesium fertilizerse1
- Outcome
- deficiency symptomse1
- Direction
- curede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Magnesium fertilizers, which cured the deficiency symptoms and increased wheat yields in 1968 and 1969, had no effect on take-all”
Claim · model-written summary
Magnesium fertilizers increased wheat yields in 1968 and 1969
- Taxon
- wheatTriticum aestivume1
- Treatment
- Magnesium fertilizerse1
- Outcome
- wheat yieldse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Magnesium fertilizers, which cured the deficiency symptoms and increased wheat yields in 1968 and 1969, had no effect on take-all”
Claim · model-written summary
Magnesium fertilizers had no effect on take-all in wheat
- Taxon
- wheatTriticum aestivume1
- Treatment
- Magnesium fertilizerse1
- Interactor
- take-alle1pathogen
- Outcome
- take-alle1
- Direction
- no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Magnesium fertilizers, which cured the deficiency symptoms and increased wheat yields in 1968 and 1969, had no effect on take-all”
Claim · model-written summary
Leaves of take-all-attacked wheat contained less nitrogen and potassium than leaves of unattacked plants
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- Leavese2
- Interactor
- take-alle2pathogen
- Outcome
- nitrogen and potassiume2
- Direction
- lesse2
- Qualifier
- severely attackede2
- Comparator
- unattacked plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Symptoms of magnesium deficiency and take-all disease occurred during 1967 in wheat grown for the second year in succession”
e2“Leaves from crops severely attacked by take-all contained less nitrogen and potassium than leaves from unattacked plants but not less magnesium”
Claim · model-written summary
Leaves of take-all-attacked wheat did not contain less magnesium than leaves of unattacked plants
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- Leavese2
- Interactor
- take-alle2pathogen
- Outcome
- magnesiume2
- Direction
- not lesse2
- Comparator
- unattacked plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Symptoms of magnesium deficiency and take-all disease occurred during 1967 in wheat grown for the second year in succession”
e2“Leaves from crops severely attacked by take-all contained less nitrogen and potassium than leaves from unattacked plants but not less magnesium”
Claim · model-written summary
Magnesium fertilizer did not increase spring barley yields in 1969
- Taxon
- spring barley
.jpg?width=60)
Hordeum vulgaree1 - Treatment
- magnesium fertilizere1
- Outcome
- yieldse1
- Direction
- did not increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“In 1969 magnesium fertilizer did not increase yields or affect takeall of spring barley on the site but, in contrast to 1968, increased potato yields”
Claim · model-written summary
Magnesium fertilizer did not affect take-all in spring barley in 1969
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- magnesium fertilizere1
- Interactor
- takealle1pathogen
- Outcome
- takealle1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In 1969 magnesium fertilizer did not increase yields or affect takeall of spring barley on the site but, in contrast to 1968, increased potato yields”
Claim · model-written summary
Magnesium fertilizer increased potato yields in 1969, in contrast to 1968
- Taxon
- potato
Solanum tuberosume1 - Treatment
- magnesium fertilizere1
- Outcome
- potato yieldse1
- Direction
- increasede1
- Comparator
- 1968e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In 1969 magnesium fertilizer did not increase yields or affect takeall of spring barley on the site but, in contrast to 1968, increased potato yields”
Claim · model-written summary
Magnesium fertilizer improved clover establishment, especially on soil with the least magnesium
- Treatment
- Magnesium fertilizere1
- Outcome
- establishmente1
- Direction
- improvede1
- Qualifier
- especially on soil containing least magnesiume1
TrifoliumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Magnesium fertilizer improved the establishment of clover, especially on soil containing least magnesium”
Claim · model-written summary
Exchangeable soil magnesium declined tenfold since 1888
Not reportedTaxon
Verbatim
e1“Soil analyses show a tenfold decline in exchangeable Mg since 1888”
Claim · model-written summary
Magnesium losses were highest from soil given ammonium sulphate
Not reportedTaxonComparator
Verbatim
e1“Losses were most from soil given ammonium sulphate and more from the site where wheat was long grown than where barley was”
Claim · model-written summary
Magnesium losses were higher from the site where wheat was long grown than from the site where barley was
- Outcome
- Lossese1
- Direction
- higherinferrede1
- Comparator
- where barley wase1
- Setting
- site where wheat was long growne1
Not reportedTaxon
Verbatim
e1“Losses were most from soil given ammonium sulphate and more from the site where wheat was long grown than where barley was”
Claim · model-written summary
Differences in soil magnesium did not explain yield differences in potatoes between experimental blocks
- Taxon
- potatoesSolanum tuberosume1
- Compound
- soil magnesiume1
- Outcome
- yieldse1
- Direction
- no_changeinferrede1
- Setting
- blocks of the experimentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Differences in soil magnesium did not explain large differences in yields of potatoes or leys between blocks of the experiments”
Claim · model-written summary
Differences in soil magnesium did not explain yield differences in leys between experimental blocks
Verbatim
e1“Differences in soil magnesium did not explain large differences in yields of potatoes or leys between blocks of the experiments”
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See all 550 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.