Abstract
Excess solar radiation can negatively affect growth and rhizome yield of ginger (Zingiber officinale) and turmeric (Curcuma longa) plants. Thus, the objective of this study was to evaluate the effect of 60% shade nets (Experiment 1) as well as white and red kaolin sprays during two production stages (early establishment vs. entire cycle) (Experiment 2) on field-grown ginger and turmeric plants. In Experiment 1, plants were propagated from seed rhizomes (R) or second-generation rhizomes from tissue-cultured plants (2GR), while only R were used in Experiment 2. There were no differences in rhizome yield in response to shade in Experiment 1, with mean values of 644 and 692 g in ginger and turmeric, respectively. Overall, 2GR ginger plants produced a higher rhizome yield (880 g) than R plants (425 g), but no yield differences were measured in turmeric. In Experiment 2, for both species and regardless of kaolin color, sprays applied during the entire cycle increased photosynthesis and stomatal conductance and reduced leaf temperature and transpiration compared to control. Rhizome yield was also up to 87% higher in ginger and 47% higher in turmeric plants sprayed with kaolin. Spraying plants with white kaolin during the early season establishment of these crops can be an effective strategy to reduce radiation stress for open-field production.
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Claims 11
Claim · model-written summary
Shade did not change ginger rhizome yield, whose mean was 644 g.
- Taxon
- ginger
Zingiber officinalee0 - Treatment
- shadee0
- Outcome
- rhizome yielde0
- Direction
- no differencese0
- Value
- 644e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no differences in rhizome yield in response to shade in Experiment 1, with mean values of 644 and 692 g in ginger and turmeric, respectively”
Claim · model-written summary
Shade did not change turmeric rhizome yield, whose mean was 692 g.
- Taxon
- turmeric
_W_IMG_2440.jpg?width=60)
Curcuma longae0 - Treatment
- shadee0
- Outcome
- rhizome yielde0
- Direction
- no differencese0
- Value
- 692 ge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_W_IMG_2440.jpg?width=500)
Verbatim
e0“There were no differences in rhizome yield in response to shade in Experiment 1, with mean values of 644 and 692 g in ginger and turmeric, respectively”
Claim · model-written summary
Second-generation tissue culture rhizomes gave ginger yield of 880 g versus 425 g for seed rhizomes.
- Taxon
- gingerZingiber officinalee0
- Treatment
- 2GRe0
- Outcome
- rhizome yielde0
- Direction
- highere0
- Value
- 880 ge0
- Qualifier
- 425 ge0
- Comparator
- R plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, 2GR ginger plants produced a higher rhizome yield (880 g) than R plants (425 g)”
Claim · model-written summary
Rhizome propagation source did not change turmeric yield.
- Taxon
- turmericCurcuma longae0
- Treatment
- 2GRe1
- Outcome
- yielde0
- Direction
- no yield differencese0
- Comparator
- Re1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but no yield differences were measured in turmeric”
e1“There were no differences in rhizome yield in response to shade in Experiment 1, with mean values of 644 and 692 g in ginger and turmeric, respectively. Overall, 2GR ginger plants produced a higher rhizome yield (880 g) than R plants (425 g), but no yield differences were measured in turmeric.”
Claim · model-written summary
Entire-cycle kaolin sprays increased photosynthesis and stomatal conductance in ginger.
- Taxon
- gingerZingiber officinalet0
- Treatment
- sprays applied during the entire cyclee0
- Outcome
- photosynthesis and stomatal conductancee0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sprays applied during the entire cycle increased photosynthesis and stomatal conductance and reduced leaf temperature and transpiration compared to control”
t0“Ginger and Turmeric”
Claim · model-written summary
Entire-cycle kaolin sprays reduced leaf temperature and transpiration in ginger.
- Taxon
- gingerZingiber officinalet0
- Treatment
- sprays applied during the entire cyclee0
- Outcome
- leaf temperature and transpiratione0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sprays applied during the entire cycle increased photosynthesis and stomatal conductance and reduced leaf temperature and transpiration compared to control”
t0“Ginger and Turmeric”
Claim · model-written summary
Entire-cycle kaolin sprays increased photosynthesis and stomatal conductance in turmeric.
- Taxon
- turmericCurcuma longat0
- Treatment
- sprays applied during the entire cyclee0
- Outcome
- photosynthesis and stomatal conductancee0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sprays applied during the entire cycle increased photosynthesis and stomatal conductance and reduced leaf temperature and transpiration compared to control”
t0“Ginger and Turmeric”
Claim · model-written summary
Entire-cycle kaolin sprays reduced leaf temperature and transpiration in turmeric.
- Taxon
- turmericCurcuma longat0
- Treatment
- sprays applied during the entire cyclee0
- Outcome
- leaf temperature and transpiratione0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sprays applied during the entire cycle increased photosynthesis and stomatal conductance and reduced leaf temperature and transpiration compared to control”
t0“Ginger and Turmeric”
Claim · model-written summary
Kaolin spray increased ginger rhizome yield by up to 87%.
- Taxon
- gingerZingiber officinalee0
- Treatment
- sprayed with kaoline0
- Outcome
- Rhizome yielde0
- Direction
- highere0
- Value
- 87%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizome yield was also up to 87% higher in ginger and 47% higher in turmeric plants sprayed with kaolin”
Claim · model-written summary
Kaolin spray increased turmeric rhizome yield by up to 47%.
- Taxon
- turmericCurcuma longae0
- Treatment
- sprayed with kaoline0
- Outcome
- Rhizome yielde0
- Direction
- highere0
- Value
- 47%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizome yield was also up to 87% higher in ginger and 47% higher in turmeric plants sprayed with kaolin”
Claim · model-written summary
The authors recommend early-season white kaolin sprays to reduce radiation stress in open-field ginger and turmeric.
- Taxon
- gingerZingiber officinalet0
- Outcome
- Spraying plants with white kaolin during the early season establishmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying plants with white kaolin during the early season establishment of these crops can be an effective strategy to reduce radiation stress for open-field production”
t0“Ginger and Turmeric”
The same questions in other papers
shade · yield · Zingiber officinale (ginger)Results differ
3 in the opposite direction
- positive
- positive
- positive
shade · yield · Curcuma longa (turmeric)Results differ
6 in the opposite direction
- positive
- positive
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See all 7 papers →application · yield · Curcuma longa (turmeric)Positive and negative results
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- negative
- no effect
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See all 13 papers →application · physiology: photosynthesis · Zingiber officinale (ginger)Results agree
1 paper in the same direction as this paper
- positive
application · yield · Zingiber officinale (ginger)Results agree
9 papers in the same direction as this paper
- positive
- positive
- positive
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See all 10 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.