Abstract
The study was carried out to clarify the effects of various compositions of nutrient solution on the growth, content of nitrogen, phosphorus, potassium, calcium, and magnesium in plant tissues and n/w (nutrient absorption (me)/water consumption (l)) of these five elements in head lettuce, tomato, eggplant, and sweet pepper.The crops were grown in a balanced solution at a horticultural experimental station in Japan (treatment 1) and in a nutrient solution which was based on the reports of recent experiments (treatments 2 and 3).The results are summarized as follows:1. The differences of growth, yield, nutrient absorption and n/w of nitrogen, phosphorus, potassium, calcium, and magnesium among the experimental plots in each crop were not noticeable. But selective salt absorption by different crops was observed.2. The differences of selective salt absorption of different crops were found in the n/w of nutrient elements. Especially, it was remarkable in the case of calcium absorption, and the n/w of calcium was found to occur in the following order: tomato>eggplant>sweet pepper>head lettuce.3. A reverse tendency between the n/w of calcium and potassium was found at the growing stage of plants.4. In tomato and head lettuce, the n/w of nutrient elements was found to be decreased as the age of plants advanced. But in eggplant and sweet pepper, the n/w of nitrogen and calcium was constantly increased when fruits were harvested at an immature stage.5. The balanced solution of horticultural station in Japan could be used with no trouble for growing plants in this study. When the results of this study were scrutinized in detail, it seemed that the growth of head lettuce was not effected by a low calcium level solution. Moreover, the increase of calcium ratio of nutrient composition in tomato was favorable to the production of fruits.
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Claims 11
Claim · model-written summary
Differences in growth, yield, nutrient absorption and n/w of N, P, K, Ca and Mg among the experimental plots of different nutrient solutions were not noticeable within each crop.
- Treatment
- various compositions of nutrient solutione1
- Outcome
- growth, yield, nutrient absorption and n/we0
- Direction
- not noticeablee0
- Comparator
- experimental plotse0
Not reportedTaxon
Verbatim
e0“The differences of growth, yield, nutrient absorption and n/w of nitrogen, phosphorus, potassium, calcium, and magnesium among the experimental plots in each crop were not noticeable”
e1“various compositions of nutrient solution”
Claim · model-written summary
Selective salt absorption differed among the crops.
- Outcome
- selective salt absorptione0
Not reportedTaxon
Verbatim
e0“But selective salt absorption by different crops was observed”
Claim · model-written summary
The n/w of calcium differed most among crops, in the order tomato > eggplant > sweet pepper > head lettuce.
Not reportedTaxon
Verbatim
e0“the n/w of calcium was found to occur in the following order: tomato>eggplant>sweet pepper>head lettuce”
Claim · model-written summary
A reverse tendency between the n/w of calcium and potassium was found at the growing stage of plants.
Not reportedTaxon
Verbatim
e0“A reverse tendency between the n/w of calcium and potassium was found at the growing stage of plants”
Claim · model-written summary
In tomato the n/w of nutrient elements decreased as the plants aged.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- age of plantse0
- Outcome
- n/w of nutrient elementse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In tomato and head lettuce, the n/w of nutrient elements was found to be decreased as the age of plants advanced”
Claim · model-written summary
In head lettuce the n/w of nutrient elements decreased as the plants aged.
Verbatim
e0“In tomato and head lettuce, the n/w of nutrient elements was found to be decreased as the age of plants advanced”
Claim · model-written summary
In eggplant the n/w of nitrogen and calcium constantly increased when fruits were harvested at an immature stage.
- Taxon
- eggplant
Solanum melongenae0 - Organ / stage
- fruits were harvested at an immature stagee0
- Outcome
- n/w of nitrogen and calciume0
- Direction
- constantly increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in eggplant and sweet pepper, the n/w of nitrogen and calcium was constantly increased when fruits were harvested at an immature stage”
Claim · model-written summary
In sweet pepper the n/w of nitrogen and calcium constantly increased when fruits were harvested at an immature stage.
- Taxon
- sweet pepper
Capsicum annuume0 - Organ / stage
- fruits were harvested at an immature stagee0
- Outcome
- n/w of nitrogen and calciume0
- Direction
- constantly increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in eggplant and sweet pepper, the n/w of nitrogen and calcium was constantly increased when fruits were harvested at an immature stage”
Claim · model-written summary
The balanced solution of the horticultural station in Japan could be used with no trouble for growing the plants in this study.
- Outcome
- could be used with no trouble for growing plantse0
Not reportedTaxon
Verbatim
e0“The balanced solution of horticultural station in Japan could be used with no trouble for growing plants in this study”
Claim · model-written summary
Growth of head lettuce was not affected by a low calcium level solution.
Not reportedComparator
Verbatim
e0“the growth of head lettuce was not effected by a low calcium level solution”
Claim · model-written summary
Increasing the calcium ratio of the nutrient composition in tomato was favorable to fruit production.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- increase of calcium ratio of nutrient compositione0
- Outcome
- production of fruitse0
- Direction
- favorablee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase of calcium ratio of nutrient composition in tomato was favorable to the production of fruits”
The same questions in other papers
calcium atom · yield · Solanum lycopersicum (tomato)Results differ
66 papers in the same direction as this paper · 11 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
75 papers more in this group
See all 79 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.