Abstract
By using nutritional diagnosis of citrus leaves and determining soil micronutrients, the relationship between soil micronutrients and citrus growth in southern China has been studied.Studies showed that there was a significant positive correlation between available micronutrients (such as Zn, Mo, Cu) in the soil and the corresponding nutrients in citrus leaves. Thus, one can roughly learn of the sufficiency or deficiency of certain nutrients in soils by analyzing citrus leaves. Rational spray of Zn B or Mo fertilizer not only improved citrus yields but also increased the total sugar of Satsuma mandarin and of Xinhui orange by 2.9 and 17.2% respectively compared with the control. Spraying Mo fertilizer increased the vitamin C content of Satsuma mandarin juice by 4.7%-8.4%, maturated fruits 7-10 days earlier and gave the peel a brighter color.The ultramicroscopic characteristics of Zn-deficient citrus leaves were investigated under an electron microscope. Results showed that the Zn-deficient leaf cell was characterized mainly by poor cytoplasm, endoplasmic reticula and ribosomes and by big starch grains in the chloroplast. As a result of spraying Zn fertilizer the structure of the cell returned to normal, the cytoplasm became rich and the amount of chloroplast increased. There also appeared a great deal of multiform endoplasmic reticula, thus promoting the photosynthesis of Zn-deficient plants. This provides a cytologico-theoretical basis for fertilization of high-yielding citrus trees.
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Claims 13
Claim · model-written summary
Available soil micronutrients were significantly positively correlated with the corresponding nutrients in citrus leaves.
- Compound
- available micronutrientse1
- Outcome
- corresponding nutrients in citrus leavese1
- Direction
- positivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e1“there was a significant positive correlation between available micronutrients (such as Zn, Mo, Cu) in the soil and the corresponding nutrients in citrus leaves”
Claim · model-written summary
Rational spray of Zn, B or Mo fertilizer improved citrus yields.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e2“Rational spray of Zn B or Mo fertilizer not only improved citrus yields”
Claim · model-written summary
Rational spray of Zn, B or Mo fertilizer increased total sugar of Satsuma mandarin by 2.9% compared with the control.
- Taxon
- Satsuma mandarin
Citrus unshiue3 - Treatment
- Rational spray of Zn B or Mo fertilizere2
- Outcome
- total sugare3
- Direction
- increasede3
- Value
- 2.9e3
- Qualifier
- 17.2% respectivelye3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e2“Rational spray of Zn B or Mo fertilizer not only improved citrus yields”
e3“increased the total sugar of Satsuma mandarin and of Xinhui orange by 2.9 and 17.2% respectively compared with the control”
Claim · model-written summary
Rational spray of Zn, B or Mo fertilizer increased total sugar of Xinhui orange by 17.2% compared with the control.
Verbatim
e2“Rational spray of Zn B or Mo fertilizer not only improved citrus yields”
e3“increased the total sugar of Satsuma mandarin and of Xinhui orange by 2.9 and 17.2% respectively compared with the control”
Claim · model-written summary
Mo fertilizer spraying increased vitamin C content of Satsuma mandarin juice by 4.7%-8.4%.
- Taxon
- Satsuma mandarin
Citrus unshiue4 - Treatment
- Spraying Mo fertilizere4
- Outcome
- vitamin C contente4
- Direction
- increasede4
- Value
- 4.7%-8.4%e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e4“Spraying Mo fertilizer increased the vitamin C content of Satsuma mandarin juice by 4.7%-8.4%”
Claim · model-written summary
Mo fertilizer spraying matured citrus fruits 7-10 days earlier.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e4“Spraying Mo fertilizer increased the vitamin C content of Satsuma mandarin juice by 4.7%-8.4%”
e5“maturated fruits 7-10 days earlier”
Claim · model-written summary
Mo fertilizer spraying gave the citrus peel a brighter color.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e4“Spraying Mo fertilizer increased the vitamin C content of Satsuma mandarin juice by 4.7%-8.4%”
e6“gave the peel a brighter color”
Claim · model-written summary
Zn-deficient citrus leaf cells had poor cytoplasm, endoplasmic reticula and ribosomes.
- Organ / stage
- leaf celle7
- Treatment
- Zn-deficiente7
- Outcome
- poor cytoplasm, endoplasmic reticula and ribosomese7
- Qualifier
- mainlye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e7“the Zn-deficient leaf cell was characterized mainly by poor cytoplasm, endoplasmic reticula and ribosomes and by big starch grains in the chloroplast”
Claim · model-written summary
Zn-deficient citrus leaf cells had big starch grains in the chloroplast.
- Organ / stage
- leaf celle7
- Treatment
- Zn-deficiente7
- Outcome
- big starch grainse7
- Qualifier
- in the chloroplaste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e7“the Zn-deficient leaf cell was characterized mainly by poor cytoplasm, endoplasmic reticula and ribosomes and by big starch grains in the chloroplast”
Claim · model-written summary
Zn fertilizer spraying returned the structure of Zn-deficient citrus leaf cells to normal.
- Treatment
- spraying Zn fertilizere0
- Outcome
- structure of the celle0
- Direction
- returned to normale0
- Comparator
- Zn-deficiente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e7“the Zn-deficient leaf cell was characterized mainly by poor cytoplasm, endoplasmic reticula and ribosomes and by big starch grains in the chloroplast”
e0“As a result of spraying Zn fertilizer the structure of the cell returned to normal, the cytoplasm became rich and the amount of chloroplast increased”
Claim · model-written summary
Zn fertilizer spraying made the cytoplasm of Zn-deficient citrus leaf cells rich.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e7“the Zn-deficient leaf cell was characterized mainly by poor cytoplasm, endoplasmic reticula and ribosomes and by big starch grains in the chloroplast”
e0“As a result of spraying Zn fertilizer the structure of the cell returned to normal, the cytoplasm became rich and the amount of chloroplast increased”
Claim · model-written summary
Zn fertilizer spraying increased the amount of chloroplasts in Zn-deficient citrus leaf cells.
- Treatment
- spraying Zn fertilizere0
- Outcome
- amount of chloroplaste0
- Direction
- increasede0
- Comparator
- Zn-deficiente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e7“the Zn-deficient leaf cell was characterized mainly by poor cytoplasm, endoplasmic reticula and ribosomes and by big starch grains in the chloroplast”
e0“As a result of spraying Zn fertilizer the structure of the cell returned to normal, the cytoplasm became rich and the amount of chloroplast increased”
Claim · model-written summary
Multiform endoplasmic reticula that appeared in Zn-deficient citrus leaves promote photosynthesis.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“citrus growth”
e0“There also appeared a great deal of multiform endoplasmic reticula, thus promoting the photosynthesis of Zn-deficient plants”
The same questions in other papers
zinc atom · quality: sugar starch · Citrus unshiu (satsuma mandarin)Results agree
2 papers in the same direction as this paper
- positive
- positive
fertilization · quality: sugar starch · Citrus unshiu (satsuma mandarin)Results agree
1 paper in the same direction as this paper
- positive
application · quality: sugar starch · Citrus unshiu (satsuma mandarin)Results agree
1 paper in the same direction as this paper
- positive
application · soil: physics · CitrusResults agree
1 paper in the same direction as this paper
- positive
fertilization · soil: physics · CitrusResults agree
2 papers in the same direction as this paper
- 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.