Abstract
Soil application of copper and zinc to the plants Hyptis suaveolens (L.) Poit. and Helianthus annuus L. caused phytotoxic symptoms and decreased growth in terms of dry weight and chlorophyll content. Copper was found to be more toxic to sunflower than to Hyptis. In Hyptis, much of the absorbed copper was retained in the roots. Imbalances, in the levels of Fe, Mn, Cu and Zn were greater for sunflower which exhibited severe phytotoxicity. Zinc treatment caused a greater reduction in the biological yield of Hyptis. At the highest level of 1200 ppm Zn, dry weight yield of Hyptis was only 57.3% as against 66.4% in sunflower. The content of K and Mg in leaves and Ca levels in roots of Zn‐treated sunflower markedly increased. In general, the phytotoxic effects of Zn were found to be less severe than those of Cu, at the concentrations employed in this experiment.
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Claims 11
Claim · model-written summary
Copper and zinc caused phytotoxic symptoms and reduced dry weight and chlorophyll in Hyptis.
- Taxon
- Hyptis suaveolens
_Kuntze_(3280487383).jpg?width=60)
Mesosphaerum suaveolense0 - Treatment
- copper and zince0
- Outcome
- dry weight and chlorophyll contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Kuntze_(3280487383).jpg?width=500)
Verbatim
e0“Soil application of copper and zinc to the plants Hyptis suaveolens (L.) Poit. and Helianthus annuus L. caused phytotoxic symptoms and decreased growth in terms of dry weight and chlorophyll content”
Claim · model-written summary
Copper and zinc caused phytotoxic symptoms and reduced dry weight and chlorophyll in sunflower.
- Taxon
- Helianthus annuus
Helianthus annuuse0 - Treatment
- copper and zince0
- Outcome
- dry weight and chlorophyll contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil application of copper and zinc to the plants Hyptis suaveolens (L.) Poit. and Helianthus annuus L. caused phytotoxic symptoms and decreased growth in terms of dry weight and chlorophyll content”
Claim · model-written summary
Copper was more toxic to sunflower than Hyptis.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Coppere0
- Outcome
- more toxice0
- Comparator
- Hyptise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Copper was found to be more toxic to sunflower than to Hyptis”
Claim · model-written summary
Much absorbed copper in Hyptis was retained in roots.
.jpg?width=60){kind=small}
HyptisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“In Hyptis, much of the absorbed copper was retained in the roots”
Claim · model-written summary
Mineral imbalances were greater in sunflower, which showed severe phytotoxicity.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- Imbalances, in the levels of Fe, Mn, Cu and Zne0
- Direction
- greatere0
- Qualifier
- severe phytotoxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Imbalances, in the levels of Fe, Mn, Cu and Zn were greater for sunflower which exhibited severe phytotoxicity”
Claim · model-written summary
Zinc reduced biological yield more in Hyptis.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc treatment caused a greater reduction in the biological yield of Hyptis”
Claim · model-written summary
At 1200 ppm zinc, Hyptis dry weight yield was 57.3 percent.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the highest level of 1200 ppm Zn, dry weight yield of Hyptis was only 57.3% as against 66.4% in sunflower”
Claim · model-written summary
At 1200 ppm zinc, sunflower dry weight yield was 66.4 percent.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- 1200 ppm Zne0
- Outcome
- dry weight yielde0
- Value
- 66.4%e0
- Qualifier
- 57.3%e0
- Comparator
- Hyptise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the highest level of 1200 ppm Zn, dry weight yield of Hyptis was only 57.3% as against 66.4% in sunflower”
Claim · model-written summary
Zinc treated sunflower had increased leaf potassium and magnesium content.
- Taxon
- sunflowerHelianthus annuuse0
- Organ / stage
- leavese0
- Treatment
- Zn‐treatede0
- Outcome
- content of K and Mg in leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of K and Mg in leaves and Ca levels in roots of Zn‐treated sunflower markedly increased”
Claim · model-written summary
Zinc treated sunflower had increased root calcium.
- Taxon
- sunflowerHelianthus annuuse0
- Organ / stage
- rootse0
- Treatment
- Zn‐treatede0
- Outcome
- Ca levels in rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of K and Mg in leaves and Ca levels in roots of Zn‐treated sunflower markedly increased”
Claim · model-written summary
Zinc phytotoxic effects were less severe than copper effects.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phytotoxic effects of Zn were found to be less severe than those of Cu”
t0“Hyptis suaveolens”
The same questions in other papers
copper atom · physiology: pigments · Helianthus annuus (common sunflower)Results differ
3 papers in the same direction as this paper
- negative
- negative
- no effect
zinc atom · physiology: pigments · Helianthus annuus (common sunflower)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →zinc atom · molecular: metabolites · Helianthus annuus (common sunflower)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 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.