Abstract
A greenhouse experiment aimed at investigating the effect of four chelates, differing in percentage of Fe content and the kind of Fe bonding ligand: Fe 8 Forte (EDTA+ +HEEDTA), Fe 9 Premium (DTPA), Fe 13 Top (EDTA) and Librel Fe DP7 (DTPA), on the state of iron nutrition of Merkury F 1 cultivar greenhouse tomato grown traditionally in peat substrate. The second factor was iron content in the growing medium, which was established to reach the following levels: 50, 75 and 100 mg Fe⋅dm -3 , while in the control object Fe values ranged 17.9 Fe⋅dm -3 (after peat liming). The experiment was established in a two-factorial design with three replications including four plants cultivated on one plot. The iron content was assayed in plant index parts according to the ASA method. On the basis of the results, significant differences were found in the state of greenhouse tomato nutrition under the influence of the examined iron chelates. The highest content of iron in tomato leaves was determined when chelate Fe 9 Premium (DTPA) was used, which points to the fact that it was the best source of Fe. The lowest iron level was recorded after the application of Fe 13 Top (EDTA). The highest mean Fe content for the years and dates of analyses appeared in leaves of plants cultivated in the growing medium containing 75 mg Fe⋅dm -3 . In June, after the plants began to yield, there was a considerable decrease in the Fe content in plant index parts in comparison to the stage of fruit maturation and the end of yielding. The study did not demonstrate any symptoms of phytotoxicity or visible disorders regarding tomato growth and development due to the examined Fe chelates introduced in the doses of 32.1, 57.1 and 82.1 mg Fe⋅dm -3 to the substrate, whose initial Fe concentration after peat liming was on average 17.9 mg Fe⋅dm -3 .
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Claims 6
Claim · model-written summary
Iron chelates significantly differed in their effect on tomato iron nutrition.
- Taxon
- greenhouse tomatoe0
- Treatment
- examined iron chelatese0
- Outcome
- state of greenhouse tomato nutritione0
Not reportedComparatorDirection
Verbatim
e0“significant differences were found in the state of greenhouse tomato nutrition under the influence of the examined iron chelates”
t0“greenhouse tomato”
Claim · model-written summary
Fe 9 Premium gave the highest leaf iron content and was judged the best Fe source.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Fe 9 Premium (DTPA)e0
- Outcome
- content of iron in tomato leavese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest content of iron in tomato leaves was determined when chelate Fe 9 Premium (DTPA) was used, which points to the fact that it was the best source of Fe”
t0“greenhouse tomato”
Claim · model-written summary
Fe 13 Top gave the lowest iron level.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Fe 13 Top (EDTA)e0
- Outcome
- iron levele0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest iron level was recorded after the application of Fe 13 Top (EDTA)”
t0“greenhouse tomato”
Claim · model-written summary
Leaves from plants grown at 75 mg Fe⋅dm -3 had the highest mean Fe content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- 75 mg Fe⋅dm -3e0
- Outcome
- mean Fe contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest mean Fe content for the years and dates of analyses appeared in leaves of plants cultivated in the growing medium containing 75 mg Fe⋅dm -3”
t0“greenhouse tomato”
Claim · model-written summary
Leaf iron content decreased in June after yield began relative to fruit maturation and the end of yielding.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- Fe content in plant index partse0
- Direction
- decreasee0
- Comparator
- the stage of fruit maturation and the end of yieldinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In June, after the plants began to yield, there was a considerable decrease in the Fe content in plant index parts in comparison to the stage of fruit maturation and the end of yielding”
t0“greenhouse tomato”
Claim · model-written summary
The chelate doses produced no phytotoxicity symptoms or visible growth and development disorders.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- examined Fe chelatese0
- Outcome
- symptoms of phytotoxicity or visible disorders regarding tomato growth and developmente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study did not demonstrate any symptoms of phytotoxicity or visible disorders regarding tomato growth and development due to the examined Fe chelates introduced in the doses of 32.1, 57.1 and 82.1 mg Fe⋅dm -3 to the substrate”
t0“greenhouse tomato”
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