Abstract
The effects of manganese and nitrogen levels on the occrrence of so-called“Abnormal defoliation”of Satsuma orange were studied, using young trees in sand culture.The high levels of manganese in nutrient solution induced the increase of manganese content in fibrous fine roots and in leaves. In this case, the manganese content in leaves increased up to the same level in the trees showing the symptom of“Abnormal defoliation”in orchard, and the brown spots which are characteristic of“Abnormal defoliation”were observed on some leaves of the experimental trees, without accompanying any other injurious effects such as retardation of growth, decay of roots, and as defoliation.Manganese content in the fibrous roots was increased along with the increase of nitrogen concentration in nutrient solution, whereas the change of manganese content in leaves was not observed.From the results mentioned above, it was concluded that the excessive absorption of manganese may be due to the excess of available manganese in the culture media, and also that the brown spots appearing in leaves will be taken to be the primary or essential symptom of this disorder.
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Claims 7
Claim · model-written summary
High manganese in nutrient solution increased manganese content in fibrous fine roots and leaves of Satsuma orange.
- Taxon
- Satsuma orange
Citrus unshiue0 - Organ / stage
- fibrous fine rootse1
- Treatment
- high levels of manganese in nutrient solutione1
- Outcome
- manganese contente1
- Direction
- increasee1
- Setting
- sand culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Satsuma orange were studied, using young trees in sand culture”
e1“The high levels of manganese in nutrient solution induced the increase of manganese content in fibrous fine roots and in leaves”
Claim · model-written summary
Manganese content in leaves of experimental trees rose to the level of field trees showing abnormal defoliation.
- Taxon
- Satsuma orangeCitrus unshiue0
- Outcome
- manganese content in leavese2
- Direction
- increasede2
- Comparator
- the trees showing the symptome2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Satsuma orange were studied, using young trees in sand culture”
e2“the manganese content in leaves increased up to the same level in the trees showing the symptom”
Claim · model-written summary
Brown spots appeared on some leaves of experimental trees without other injurious effects such as growth retardation, root decay or defoliation.
- Taxon
- Satsuma orangeCitrus unshiue0
- Organ / stage
- leavese3
- Outcome
- brown spotse4
- Qualifier
- without accompanying any other injurious effectse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Satsuma orange were studied, using young trees in sand culture”
e3“were observed on some leaves of the experimental trees, without accompanying any other injurious effects such as retardation of growth, decay of roots, and as defoliation”
e4“the brown spots appearing in leaves will be taken to be the primary or essential symptom of this disorder”
Claim · model-written summary
Excessive manganese absorption may be due to excess available manganese in the culture media.
- Taxon
- Satsuma orangeCitrus unshiue0
- Compound
- manganesee7
- Outcome
- excessive absorption of manganesee7
- Qualifier
- excess of available manganese in the culture mediae7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Satsuma orange were studied, using young trees in sand culture”
e7“it was concluded that the excessive absorption of manganese may be due to the excess of available manganese in the culture media”
Claim · model-written summary
Brown spots on leaves are the primary or essential symptom of this manganese-related disorder.
- Taxon
- Satsuma orangeCitrus unshiue0
- Organ / stage
- leavese4
- Outcome
- brown spotse4
- Qualifier
- primary or essential symptom of this disordere4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Satsuma orange were studied, using young trees in sand culture”
e4“the brown spots appearing in leaves will be taken to be the primary or essential symptom of this disorder”
Claim · model-written summary
Manganese content in fibrous roots increased with nitrogen concentration in nutrient solution.
- Taxon
- Satsuma orangeCitrus unshiue0
- Treatment
- nitrogen concentration in nutrient solutione5
- Outcome
- Manganese content in the fibrous rootse5
- Direction
- increasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Satsuma orange were studied, using young trees in sand culture”
e5“Manganese content in the fibrous roots was increased along with the increase of nitrogen concentration in nutrient solution”
Claim · model-written summary
Manganese content in leaves did not change with nitrogen concentration.
- Taxon
- Satsuma orangeCitrus unshiue0
- Outcome
- change of manganese content in leavese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Satsuma orange were studied, using young trees in sand culture”
e6“whereas the change of manganese content in leaves was not observed”
The same questions in other papers
manganese atom · nutrient: content · Citrus unshiu (satsuma mandarin)Positive and negative results
1 in the opposite direction
- positive
fertilization · nutrient: content · Citrus unshiu (satsuma mandarin)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.