Abstract
Comparison of sodium content and 8 other elements (K, Ca, Mg, P, Zn, Cu, Mn and Fe) and associated schorching symptoms in the leaves have been examined in various 1977–78 plantations of mango, guava and ber at different locations. EC of irrigation water being used at these sites varied from 424 to 1986 micromhos/cm and adjusted SAR from 1.8 to 22.5, However at a given site same quality of irrigation water is being used for the three species. In another set of orchards, soils varied from normal (SAR 0.5) to sodic (SAR 23) whereas irrigations waters were normal. Mango accumulated 2 to 3 times more Na as compared to guava and ber both in old as well as young leaves. Leaf schorching was common in mango, rare in guava and practically absent in ber. Use of sodic water (adjusted SAR 22.5) increased Na content in the foliage of mango 3 to 5| folds over the use of normal waters (adjusted SAR 1.8). However similar increase of Na contents in the leaves of guava and ber did not occur whether soil was sodic or sodic waters are being used for irrigation. Age of the leaf is an important factor determining Na, K, Ca, P, Mn and Fe contents. Use of sodic water did not make the soil sodic possibly because of high leaching during rainy season. Even then leaf schorching was common at these sites. Schorched leaves were found to have high Na concentrations which may be attributed to its uptake along with water fluxes as mass flow. Hence leaf analysis should be used as a diagnostic criteria of specific ion toxicity.
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Claims 12
Claim · model-written summary
Mango leaves, both old and young, accumulated 2 to 3 times more Na than guava and ber leaves.
- Taxon
- Mango
_from_India.jpg?width=60)
Mangifera indicae1 - Organ / stage
- old as well as young leavese1
- Outcome
- Nae1
- Direction
- moree1
- Value
- 2 to 3 timese1
- Comparator
- guava and bere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e1“Mango accumulated 2 to 3 times more Na as compared to guava and ber both in old as well as young leaves”
Claim · model-written summary
Leaf scorching was common in mango.
- Taxon
- mangoMangifera indicae1
- Outcome
- Leaf schorchinge1
- Qualifier
- commone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Leaf schorching was common in mango, rare in guava and practically absent in ber”
Claim · model-written summary
Leaf scorching was rare in guava.
- Taxon
- guava
Psidium guajavae1 - Outcome
- Leaf schorchinge1
- Qualifier
- raree1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Leaf schorching was common in mango, rare in guava and practically absent in ber”
Claim · model-written summary
Leaf scorching was practically absent in ber.
- Taxon
- ber
Ziziphus mauritianae1 - Outcome
- Leaf schorchinge1
- Qualifier
- practically absente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Leaf schorching was common in mango, rare in guava and practically absent in ber”
Claim · model-written summary
Irrigating with sodic water (adjusted SAR 22.5) increased Na content in mango foliage 3 to 5 fold compared with normal water (adjusted SAR 1.8).
- Taxon
- mangoMangifera indicae1
- Treatment
- sodic water (adjusted SAR 22.5)e1
- Outcome
- Na content in the foliagee1
- Direction
- increasede1
- Value
- 3 to 5| foldse1
- Comparator
- normal waterse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Use of sodic water (adjusted SAR 22.5) increased Na content in the foliage of mango 3 to 5| folds over the use of normal waters (adjusted SAR 1.8)”
Claim · model-written summary
Irrigation with sodic water or growth on sodic soil did not produce a similar increase of leaf Na content in guava.
- Taxon
- guavaPsidium guajavae1
- Treatment
- sodic waterse1
- Outcome
- Na contentse1
- Direction
- no_changeinferrede1
- Qualifier
- whether soil was sodic or sodic waters are being used for irrigatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“However similar increase of Na contents in the leaves of guava and ber did not occur whether soil was sodic or sodic waters are being used for irrigation”
Claim · model-written summary
Irrigation with sodic water or growth on sodic soil did not produce a similar increase of leaf Na content in ber.
- Taxon
- berZiziphus mauritianae1
- Treatment
- sodic waterse1
- Outcome
- Na contentse1
- Direction
- no_changeinferrede1
- Qualifier
- whether soil was sodic or sodic waters are being used for irrigatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“However similar increase of Na contents in the leaves of guava and ber did not occur whether soil was sodic or sodic waters are being used for irrigation”
Claim · model-written summary
Leaf age was an important factor determining the Na, K, Ca, P, Mn and Fe contents of the leaves.
- Taxon
- Mango, Guava and BerMangifera indicaPsidium guajavaZiziphus mauritianat0
- Organ / stage
- Age of the leafe1
- Outcome
- Na, K, Ca, P, Mn and Fe contentse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mango, Guava and Ber”
e1“Age of the leaf is an important factor determining Na, K, Ca, P, Mn and Fe contents”
Claim · model-written summary
Use of sodic water did not make the soil sodic.
Not reportedTaxonComparator
Verbatim
e1“Use of sodic water did not make the soil sodic”
Claim · model-written summary
Leaf scorching was still common at the sites irrigated with sodic water.
- Taxon
- Mango, Guava and BerMangifera indicaPsidium guajavaZiziphus mauritianat0
- Outcome
- leaf schorchinge1
- Qualifier
- common at these sitese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mango, Guava and Ber”
e1“Even then leaf schorching was common at these sites”
Claim · model-written summary
Scorched leaves had high Na concentrations.
- Taxon
- Mango, Guava and BerMangifera indicaPsidium guajavaZiziphus mauritianat0
- Organ / stage
- Schorched leavese1
- Outcome
- Na concentrationse1
- Direction
- highe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mango, Guava and Ber”
e1“Schorched leaves were found to have high Na concentrations”
Claim · model-written summary
The authors conclude that leaf analysis should be used as a diagnostic criterion of specific ion toxicity.
- Taxon
- Mango, Guava and BerMangifera indicaPsidium guajavaZiziphus mauritianat0
- Outcome
- diagnostic criteria of specific ion toxicitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mango, Guava and Ber”
e1“leaf analysis should be used as a diagnostic criteria of specific ion toxicity”
The same questions in other papers
salinity · nutrient: content · Mangifera indica (mango)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
salinity · nutrient: content · Ziziphus mauritiana (ber)Results agree
1 paper in the same direction as this paper
- negative
salinity · nutrient: content · Psidium guajava (guava)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.