Abstract
SUMMARY In an 8-year field experiment, potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together. Although K/Mg interactions did not affect yields they considerably affected the ratio of concentrations of these elements in the dry matter of the crops. Sodium chloride increased yields of kale but not of barley harvested at ear-emergence. Percentage yield response to potasium followed the order Potatoes (218%) < clover = barley < sugar beet < kato; < ryegress (17%). Magnesium increased yields from 3 to 10%, most with potatoes. Changes in exchangeable magnesium in the soil reflected differences between applied magnesium and crop uptakes. Changes in exchangeable potassium were less than expected, probably because non-exchangeable potassium was released on plots without added potassium and ‘fixed’ in non-exchangeable forms on plots where much fertilizer potassium had been given. Increase in the incidence of magnesium deficiency symptoms reported recently in South. East England are attributed to the local liming materials containing only small amounts of magnesium and to less F.V.M being applied to crops than previously.
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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 20
Claim · model-written summary
Potassium sulphate increased ryegrass yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Potassium sulphate increased clover yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Potassium sulphate increased sugar beet yield.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Treatment
- potassium sulphatee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Potassium sulphate increased potatoes yield.
- Taxon
- potatoes
Solanum tuberosumt0 - Treatment
- potassium sulphatee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Potassium sulphate increased kale yield.
- Taxon
- kale
Brassica oleracea var. viridist0 - Treatment
- potassium sulphatee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Potassium sulphate increased barley yield.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- potassium sulphatee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Magnesium sulphate increased ryegrass yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Magnesium sulphate increased clover yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Magnesium sulphate increased sugar beet yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- magnesium sulphatee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Magnesium sulphate increased potatoes yield.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- magnesium sulphatee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Magnesium sulphate increased kale yield.
- Taxon
- kaleBrassica oleracea var. viridist0
- Treatment
- magnesium sulphatee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Magnesium sulphate increased barley yield.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- magnesium sulphatee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
K/Mg interactions did not affect yields.
- Taxon
- ryegrass, clover, sugar beet, potatoes, kale and barleyBeta vulgaris subsp. vulgarisBrassica oleracea var. viridis
TrifoliumSolanum tuberosumHordeum vulgare
Loliumt0 - Treatment
- K/Mg interactionse0
- Outcome
- yieldse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although K/Mg interactions did not affect yields”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
K/Mg interactions affected dry matter mineral ratio.
- Taxon
- ryegrass, clover, sugar beet, potatoes, kale and barleyBeta vulgaris subsp. vulgarisBrassica oleracea var. viridisTrifoliumSolanum tuberosumHordeum vulgareLoliumt0
- Outcome
- ratio of concentrations of these elements in the dry matter of the cropse0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they considerably affected the ratio of concentrations of these elements in the dry matter of the crops”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Sodium chloride increased kale yield.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- Sodium chloridee0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sodium chloride increased yields of kale”
Claim · model-written summary
Sodium chloride did not increase barley yield.
- Taxon
- barleyHordeum vulgaree0
- Organ / stage
- ear-emergencee0
- Treatment
- Sodium chloridee0
- Outcome
- yieldse0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sodium chloride increased yields of kale but not of barley harvested at ear-emergence”
Claim · model-written summary
Magnesium increased yields 3 to 10%, most in potatoes.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- Magnesiume0
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 3 to 10%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Magnesium increased yields from 3 to 10%, most with potatoes”
Claim · model-written summary
Exchangeable soil magnesium reflected application versus uptake.
- Taxon
- ryegrass, clover, sugar beet, potatoes, kale and barleyBeta vulgaris subsp. vulgarisBrassica oleracea var. viridisTrifoliumSolanum tuberosumHordeum vulgareLoliumt0
- Treatment
- applied magnesiume0
- Outcome
- Changes in exchangeable magnesium in the soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Changes in exchangeable magnesium in the soil reflected differences between applied magnesium and crop uptakes”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Exchangeable soil K changed less than expected.
- Taxon
- ryegrass, clover, sugar beet, potatoes, kale and barleyBeta vulgaris subsp. vulgarisBrassica oleracea var. viridisTrifoliumSolanum tuberosumHordeum vulgareLoliumt0
- Outcome
- Changes in exchangeable potassiume0
- Direction
- less than expectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Changes in exchangeable potassium were less than expected”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
Claim · model-written summary
Mg deficiency increase was attributed to low Mg liming materials and less manure.
- Taxon
- ryegrass, clover, sugar beet, potatoes, kale and barleyBeta vulgaris subsp. vulgarisBrassica oleracea var. viridisTrifoliumSolanum tuberosumHordeum vulgareLoliumt0
- Outcome
- incidence of magnesium deficiency symptomse0
- Qualifier
- local liming materials containing only small amounts of magnesiume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in the incidence of magnesium deficiency symptoms reported recently in South. East England are attributed to the local liming materials containing only small amounts of magnesium and to less F.V.M being applied to crops than previously”
t0“ryegrass, clover, sugar beet, potatoes, kale and barley”
The same questions in other papers
sodium chloride · yield · Brassica oleracea (wild cabbage)Results differ
2 in the opposite direction
- no effect
- negative
magnesium atom · yield · Solanum tuberosum (potato)Results differ
10 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- no effect
8 papers more in this group
See all 12 papers →magnesium sulfate · yield · Beta vulgaris (beet)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
magnesium sulfate · yield · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
sodium chloride · yield · Hordeum vulgare (barley)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
potassium sulfate · yield · Brassica oleracea (wild cabbage)Positive and negative results
3 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
1 paper more in this group
See all 5 papers →potassium sulfate · yield · Solanum tuberosum (potato)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- positive
5 papers more in this group
See all 9 papers →magnesium sulfate · yield · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
- positive
8 of 12 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.