Abstract
When spray treatments were applied to half-trees of Cleopatra apples, it was shown that magnesium nitrate increased the incidence of pit and calcium nitrate decreased it. There was a suggestion that borax decreased the effectiveness of the calcium nitrate treatment. Magnesium or calcium nitrate, with or without borax, did not affect the potassium, magnesium, phosphorus, or nitrogen content of the fruit cortex. Calcium nitrate in 1959 increased the calcium content but magnesium nitrate had no effect. There was no significant difference in the content of potassium, magnesium, or phosphorus between 1958 and 1959, but the calcium content was 3.3 times as high in 1958. Pit incidence was low in 1958 and high in 1959. No significant difference in content of these four elements could be demonstrated between sound and pitted fruits. The results support the view that calcium is the critical element in pit incidence and that magnesium may play an important part.
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Claims 10
Claim · model-written summary
Magnesium nitrate sprays increased bitter pit incidence.
- Taxon
- apple
Malus domesticat0 - Treatment
- magnesium nitratee0
- Outcome
- incidence of pite0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“magnesium nitrate increased the incidence of pit and calcium nitrate decreased it.”
t0“apple variety Cleopatra”
Claim · model-written summary
Calcium nitrate sprays decreased bitter pit incidence.
- Taxon
- appleMalus domesticat0
- Treatment
- calcium nitratee0
- Outcome
- incidence of pite0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“magnesium nitrate increased the incidence of pit and calcium nitrate decreased it.”
t0“apple variety Cleopatra”
Claim · model-written summary
Borax may have reduced the effectiveness of calcium nitrate against bitter pit.
- Taxon
- appleMalus domesticat0
- Treatment
- boraxe0
- Outcome
- effectiveness of the calcium nitrate treatmente0
- Direction
- decreasede0
- Comparator
- calcium nitrate treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a suggestion that borax decreased the effectiveness of the calcium nitrate treatment.”
t0“apple variety Cleopatra”
Claim · model-written summary
Magnesium or calcium nitrate, with or without borax, did not affect potassium, magnesium, phosphorus or nitrogen in fruit cortex.
- Taxon
- appleMalus domesticat0
- Treatment
- Magnesium or calcium nitrate, with or without boraxe0
- Outcome
- potassium, magnesium, phosphorus, or nitrogen content of the fruit cortexe0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Magnesium or calcium nitrate, with or without borax, did not affect the potassium, magnesium, phosphorus, or nitrogen content of the fruit cortex.”
t0“apple variety Cleopatra”
Claim · model-written summary
Calcium nitrate increased fruit calcium content in 1959.
- Taxon
- appleMalus domesticat0
- Treatment
- Calcium nitratee0
- Outcome
- calcium contente0
- Direction
- increasede0
- Qualifier
- 1959e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Calcium nitrate in 1959 increased the calcium content but magnesium nitrate had no effect.”
t0“apple variety Cleopatra”
Claim · model-written summary
Magnesium nitrate did not affect calcium content in 1959.
- Taxon
- appleMalus domesticat0
- Treatment
- magnesium nitratee0
- Outcome
- calcium contente0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Calcium nitrate in 1959 increased the calcium content but magnesium nitrate had no effect.”
t0“apple variety Cleopatra”
Claim · model-written summary
Fruit cortex potassium, magnesium and phosphorus content did not differ significantly between 1958 and 1959.
- Taxon
- appleMalus domesticat0
- Outcome
- content of potassium, magnesium, or phosphoruse0
- Direction
- no significant differencee0
- Comparator
- 1958 and 1959e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no significant difference in the content of potassium, magnesium, or phosphorus between 1958 and 1959”
t0“apple variety Cleopatra”
Claim · model-written summary
Calcium content was 3.3 times higher in 1958 than in 1959.
- Taxon
- appleMalus domesticat0
- Outcome
- calcium contente0
- Direction
- as highe0
- Value
- 3.3 timese0
- Qualifier
- 1958e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the calcium content was 3.3 times as high in 1958.”
t0“apple variety Cleopatra”
Claim · model-written summary
Bitter pit incidence was low in 1958 and high in 1959.
- Taxon
- appleMalus domesticat0
- Outcome
- Pit incidencee0
- Direction
- low in 1958 and high in 1959e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pit incidence was low in 1958 and high in 1959.”
t0“apple variety Cleopatra”
Claim · model-written summary
The four measured mineral contents did not differ significantly between sound and pitted fruit.
- Taxon
- appleMalus domesticat0
- Outcome
- content of these four elementse0
- Direction
- No significant differencee0
- Comparator
- sound and pitted fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant difference in content of these four elements could be demonstrated between sound and pitted fruits.”
t0“apple variety Cleopatra”
The same questions in other papers
calcium nitrate · nutrient: content · Malus domestica (apple)Results differ
9 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
9 papers more in this group
See all 13 papers →magnesium atom · nutrient: content · Malus domestica (apple)Positive and negative results
2 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →calcium nitrate · disease · Malus domestica (apple)Results agree
3 papers in the same direction as this paper
- positive
- 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.