Abstract
We evaluated growth, yield and quality of turmeric (Curcuma longa L.) cultivated in pots with dark-red soil (pH 5.2), gray soil (pH 7.4) and red soil (pH 4.4) in Okinawa, Japan. The soils were collected from the 50-cm deep layer of the fields. We did not use any chemicals or organic fertilizers. Turmeric cultivated on dark-red soil had the highest plant height, root biomass and shoot biomass as compared with that cultivated on other soil types. Turmeric on dark-red soil had the highest yield with favorable color of the deep yellow and high curcumin content (0.20%). Protein content of turmeric in dark-red soil was 5.2%, which was around 40% higher than that in other soil types. Turmeric cultivated on dark-red and gray soils had a fat content 71% higher than that in red soil. The content of Ca, K and Mg was the highest when turmeric was cultivated on gray soil, and Fe was the highest when cultivated on dark-red soil. To gain a high yield and high contents of curcumin, fat, protein and Fe, we should cultivate turmeric in dark-red soil in Okinawa. We could not recognize the specific soil factor(s) required for high yielding and high quality of turmeric; however, it seems that a proper combination of soil factors, nutrients and/or pH level may be necessary to gain a high yield and high quality.
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Claims 11
Claim · model-written summary
Dark-red soil gave turmeric the highest height and root and shoot biomass relative to other soils.
- Taxon
- Turmeric
_W_IMG_2440.jpg?width=60)
Curcuma longae0 - Treatment
- dark-red soile0
- Outcome
- plant height, root biomass and shoot biomasse0
- Direction
- higheste0
- Comparator
- other soil typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_W_IMG_2440.jpg?width=500)
Verbatim
e0“Turmeric cultivated on dark-red soil had the highest plant height, root biomass and shoot biomass as compared with that cultivated on other soil types.”
Claim · model-written summary
Dark-red soil gave the highest turmeric yield.
- Taxon
- TurmericCurcuma longae0
- Treatment
- dark-red soile0
- Outcome
- yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Turmeric on dark-red soil had the highest yield with favorable color of the deep yellow and high curcumin content (0.20%).”
Claim · model-written summary
Turmeric on dark-red soil had a favorable deep-yellow color.
- Taxon
- TurmericCurcuma longae0
- Treatment
- dark-red soile0
- Outcome
- color of the deep yellowe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Turmeric on dark-red soil had the highest yield with favorable color of the deep yellow and high curcumin content (0.20%).”
Claim · model-written summary
Turmeric on dark-red soil had high curcumin content of 0.20%.
- Taxon
- TurmericCurcuma longae0
- Treatment
- dark-red soile0
- Outcome
- curcumin contente0
- Direction
- highe0
- Value
- 0.20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Turmeric on dark-red soil had the highest yield with favorable color of the deep yellow and high curcumin content (0.20%).”
Claim · model-written summary
Turmeric protein content on dark-red soil was 5.2%, around 40% higher than other soils.
- Taxon
- turmericCurcuma longae0
- Treatment
- dark-red soile0
- Outcome
- Protein contente0
- Direction
- highere0
- Value
- 5.2%e0
- Qualifier
- around 40%e0
- Comparator
- other soil typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein content of turmeric in dark-red soil was 5.2%, which was around 40% higher than that in other soil types.”
Claim · model-written summary
Turmeric on dark-red and gray soils had 71% higher fat content than on red soil.
- Taxon
- TurmericCurcuma longae0
- Treatment
- dark-red and gray soilse0
- Outcome
- fat contente0
- Direction
- highere0
- Value
- 71%e0
- Comparator
- red soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Turmeric cultivated on dark-red and gray soils had a fat content 71% higher than that in red soil.”
Claim · model-written summary
Turmeric calcium, potassium and magnesium content was highest on gray soil.
- Taxon
- turmericCurcuma longae0
- Treatment
- gray soile0
- Outcome
- content of Ca, K and Mge0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of Ca, K and Mg was the highest when turmeric was cultivated on gray soil, and Fe was the highest when cultivated on dark-red soil.”
Claim · model-written summary
Turmeric iron content was highest on dark-red soil.
- Taxon
- turmericCurcuma longae0
- Treatment
- dark-red soile0
- Outcome
- Fee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of Ca, K and Mg was the highest when turmeric was cultivated on gray soil, and Fe was the highest when cultivated on dark-red soil.”
Claim · model-written summary
The authors recommend dark-red soil in Okinawa for high turmeric yield and curcumin, fat, protein and iron content.
- Taxon
- turmericCurcuma longae0
- Outcome
- cultivate turmeric in dark-red soil in Okinawae0
- Setting
- Okinawae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To gain a high yield and high contents of curcumin, fat, protein and Fe, we should cultivate turmeric in dark-red soil in Okinawa.”
Claim · model-written summary
The authors could not identify specific soil factors responsible for high turmeric yield and quality.
- Taxon
- turmericCurcuma longae0
- Outcome
- specific soil factor(s) required for high yielding and high qualitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We could not recognize the specific soil factor(s) required for high yielding and high quality of turmeric”
Claim · model-written summary
The authors suggest a combination of soil factors, nutrients or pH may be necessary for high turmeric yield and quality.
- Taxon
- TurmericCurcuma longat0
- Outcome
- high yield and high qualitye0
- Qualifier
- proper combination of soil factors, nutrients and/or pH levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it seems that a proper combination of soil factors, nutrients and/or pH level may be necessary to gain a high yield and high quality”
t0“Turmeric”
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See all 6 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.