Abstract
Abstract. In 2-year seasonal experiments (cultivation in peat), the effect of chelated and mineral forms of zinc on the yield of greenhouse lettuce and on the content of zinc, cop-per, manganese and iron in lettuce leaves were compared. The following zinc doses were applied: 10, 20, 30, and 60 mg dm-3 of substrate. Using both forms of zinc in the studied range, good and similar yields were obtained. Zinc application in the mineral form caused a twice greater zinc concentration in lettuce leaves and a higher concentration of manga-nese, while copper and iron showed smaller concentrations. Key words: lettuce, zinc chelate and zinc sulphate, content of micronutrients
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Claims 4
Claim · model-written summary
Both zinc forms gave similar good lettuce yields.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- both forms of zince0
- Outcome
- yieldse0
- Direction
- similare0
- Comparator
- both forms of zince0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Using both forms of zinc in the studied range, good and similar yields were obtained”
t0“lettuce”
Claim · model-written summary
Mineral zinc produced twice the leaf zinc concentration.
- Taxon
- lettuceLactuca sativae0
- Treatment
- Zinc application in the mineral forme0
- Outcome
- zinc concentration in lettuce leavese0
- Direction
- greatere0
- Value
- twicee0
- Comparator
- chelatedt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc application in the mineral form caused a twice greater zinc concentration in lettuce leaves”
t0“chelated and mineral forms of micronutrients”
Claim · model-written summary
Mineral zinc increased leaf manganese concentration.
- Taxon
- lettuceLactuca sativae0
- Treatment
- Zinc application in the mineral forme0
- Outcome
- concentration of manga-nesee0
- Direction
- highere0
- Comparator
- chelatedt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc application in the mineral form caused a twice greater zinc concentration in lettuce leaves and a higher concentration of manga-nese”
t0“chelated and mineral forms of micronutrients”
Claim · model-written summary
Mineral zinc resulted in smaller leaf copper and iron concentrations.
- Taxon
- lettuceLactuca sativat0
- Treatment
- mineral formt0
- Outcome
- copper and irone0
- Direction
- smallere0
- Comparator
- chelatedt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while copper and iron showed smaller concentrations”
t0“chelated and mineral forms of micronutrients on their content in leaves and the yield of lettuce”
The same questions in other papers
zinc atom · yield · Lactuca sativa (garden lettuce)Positive and negative results
2 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- negative
- negative
4 papers more in this group
See all 8 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.