Abstract
Although the effects caused in plants by the calcium (Ca)–phosphorus (P) interaction in calcareous soils are well documented, very few studies report on such effects in nutritive solutions or hydroponic cultivation. In a sand and perlite (1:1 volume) hydroponic system, effects of various P (21, 42, and 63 ppm) and Ca (120, 180, and 240 ppm) concentrations on potato tuberization were studied. A factorial experiment based on a completely randomized design with three replications was conducted. For maximum tuber yield and tuber number production, 21 and 42 ppm P was sufficient, respectively. Increase in P and Ca concentrations in nutrient solutions in early growing season resulted in an increase in shoot and root weight, leaf area, and shoot length linearly, but tuber yield and tuber number did not follow this trend. The maximum tuber specific gravity and total solid percent were also observed in 42 ppm P. The highest tuber number and tuber yield were observed in 120 ppm Ca concentration.
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Claims 8
Claim · model-written summary
The maximum tuber yield occurred with 21 ppm P.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- 21e0
- Outcome
- maximum tuber yielde0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For maximum tuber yield and tuber number production, 21 and 42 ppm P was sufficient, respectively”
t0“potato”
Claim · model-written summary
The maximum tuber number occurred with 42 ppm P.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 42 ppm Pe0
- Outcome
- tuber number productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For maximum tuber yield and tuber number production, 21 and 42 ppm P was sufficient, respectively”
t0“potato”
Claim · model-written summary
Increasing phosphorus and calcium increased shoot and root weight and leaf area early in the season.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Increase in P and Ca concentrationse0
- Outcome
- shoot and root weight, leaf areae0
- Direction
- increasee0
- Qualifier
- early growing seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in P and Ca concentrations in nutrient solutions in early growing season resulted in an increase in shoot and root weight, leaf area, and shoot length linearly”
t0“potato”
Claim · model-written summary
Increasing phosphorus and calcium increased shoot length early in the season.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Increase in P and Ca concentrationse0
- Outcome
- shoot lengthe0
- Direction
- increasee0
- Qualifier
- early growing seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in P and Ca concentrations in nutrient solutions in early growing season resulted in an increase in shoot and root weight, leaf area, and shoot length linearly”
t0“potato”
Claim · model-written summary
Tuber yield did not increase linearly with phosphorus and calcium.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- tuber yielde0
- Direction
- did not follow this trende0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but tuber yield and tuber number did not follow this trend”
t0“potato”
Claim · model-written summary
Tuber number did not increase linearly with phosphorus and calcium.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- tuber numbere0
- Direction
- did not follow this trende0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but tuber yield and tuber number did not follow this trend”
t0“potato”
Claim · model-written summary
Maximum tuber specific gravity and total solids were observed with 42 ppm P.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 42 ppm Pe0
- Outcome
- maximum tuber specific gravity and total solid percente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum tuber specific gravity and total solid percent were also observed in 42 ppm P”
t0“potato”
Claim · model-written summary
The highest tuber number and yield occurred at 120 ppm Ca.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 120 ppm Ca concentratione0
- Outcome
- highest tuber number and tuber yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest tuber number and tuber yield were observed in 120 ppm Ca concentration”
t0“potato”
The same questions in other papers
calcium atom · growth · Solanum tuberosum (potato)Positive and negative results
15 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
13 papers more in this group
See all 17 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.