Abstract
Consumption of vegetables with either too low or excessive contents of micronutrients may have an adverse effect on human health. In intensive horticultural production mineral fertilizers, containing mineral or chelate compounds with varying micronutrient fertilization efficiency, constitute the main sources of micronutrients for plants. In the years 2009–2010 experiments with lettuce were conducted to investigate the effect of mineral (sulfates) and chelate (IDHA chelate, EDTA + DTPA chelate) forms of copper, zinc and manganese on yield and micronutrient contents in leaves. Two levels of micronutrients were applied (mg· dm-3 of substrate): I. 5 Cu, 10 Zn, 10 Mn, and II. 20 Cu, 40 Zn and 40 Mn. Lettuce was grown in 6 dm3 containers filled with limed highmoor peat, enriched with macro- and micronutrients. Lettuce was harvested at the consumption stage. Contents of Cu, Zn and Mn were determined by ASA in lettuce leaves. The volume of lettuce yield at a lower content of micronutrients in the substrate did not depend on the form in which copper, zinc and manganese were introduced. After the application of higher rates of micronutrients in the mineral or IDHA chelate forms a significantly higher crop was produced than in case of EDTA + DTPA chelates. An increase in micronutrient rates in the substrate had a significant effect on an increase in their contents in vegetables. At the nutrition of crops with micronutrients at higher rates in the form of EDTA + DTPA chelates a significant increase was found in copper content in lettuce. After the application of higher rates of micronutrients plants that were introduced two micronutrients in the IDHA chelate forms and one in the mineral form contained less zinc. Leaves of lettuce grown on substrate with mineral forms of copper, zinc and manganese contained significantly more manganese than those grown in substrate with chelate forms of micronutrients.
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Claims 6
Claim · model-written summary
At a lower micronutrient content in the substrate, lettuce yield did not depend on the form of copper, zinc and manganese.
- Taxon
- lettuce
Lactuca sativae1 - Treatment
- the form in which copper, zinc and manganese were introducede1
- Outcome
- volume of lettuce yielde1
- Direction
- no_changeinferrede1
- Qualifier
- at a lower content of micronutrients in the substratee1
- Setting
- GREENHOUSEt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“A COMPARISON OF THE EFFECT OF MINERAL AND CHELATE FORMS OF COPPER, ZINC AND MANGANESE ON YIELD AND NUTRIENT STATUS OF GREENHOUSE LETTUCE”
e1“The volume of lettuce yield at a lower content of micronutrients in the substrate did not depend on the form in which copper, zinc and manganese were introduced”
Claim · model-written summary
Higher rates of micronutrients in mineral or IDHA chelate forms gave significantly higher lettuce crop than EDTA + DTPA chelates.
- Taxon
- LETTUCELactuca sativat0
- Treatment
- higher rates of micronutrients in the mineral or IDHA chelate formse2
- Outcome
- crope2
- Direction
- highere2
- Comparator
- EDTA + DTPA chelatese2
- Setting
- GREENHOUSEt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“A COMPARISON OF THE EFFECT OF MINERAL AND CHELATE FORMS OF COPPER, ZINC AND MANGANESE ON YIELD AND NUTRIENT STATUS OF GREENHOUSE LETTUCE”
e2“After the application of higher rates of micronutrients in the mineral or IDHA chelate forms a significantly higher crop was produced than in case of EDTA + DTPA chelates”
Claim · model-written summary
An increase in micronutrient rates in the substrate significantly increased their contents in lettuce vegetables.
- Taxon
- LETTUCELactuca sativat0
- Treatment
- An increase in micronutrient rates in the substratee3
- Outcome
- contents in vegetablese3
- Direction
- increasee3
- Setting
- GREENHOUSEt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“A COMPARISON OF THE EFFECT OF MINERAL AND CHELATE FORMS OF COPPER, ZINC AND MANGANESE ON YIELD AND NUTRIENT STATUS OF GREENHOUSE LETTUCE”
e3“An increase in micronutrient rates in the substrate had a significant effect on an increase in their contents in vegetables”
Claim · model-written summary
Micronutrients at higher rates in EDTA + DTPA chelate form significantly increased copper content in lettuce.
- Taxon
- LETTUCELactuca sativat0
- Treatment
- micronutrients at higher rates in the form of EDTA + DTPA chelatese4
- Outcome
- copper contente4
- Direction
- increasee4
- Setting
- GREENHOUSEt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“A COMPARISON OF THE EFFECT OF MINERAL AND CHELATE FORMS OF COPPER, ZINC AND MANGANESE ON YIELD AND NUTRIENT STATUS OF GREENHOUSE LETTUCE”
e4“At the nutrition of crops with micronutrients at higher rates in the form of EDTA + DTPA chelates a significant increase was found in copper content in lettuce”
Claim · model-written summary
After higher rates, lettuce grown with two micronutrients in IDHA chelate form and one in mineral form contained less zinc.
- Taxon
- LETTUCELactuca sativat0
- Treatment
- two micronutrients in the IDHA chelate forms and one in the mineral forme5
- Outcome
- zince5
- Direction
- lesse5
- Setting
- GREENHOUSEt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“A COMPARISON OF THE EFFECT OF MINERAL AND CHELATE FORMS OF COPPER, ZINC AND MANGANESE ON YIELD AND NUTRIENT STATUS OF GREENHOUSE LETTUCE”
e5“After the application of higher rates of micronutrients plants that were introduced two micronutrients in the IDHA chelate forms and one in the mineral form contained less zinc”
Claim · model-written summary
Lettuce leaves grown with mineral forms of Cu, Zn and Mn contained significantly more manganese than with chelate forms.
- Taxon
- lettuceLactuca sativae6
- Organ / stage
- Leavese6
- Treatment
- mineral forms of copper, zinc and manganesee6
- Outcome
- manganesee6
- Direction
- moree6
- Comparator
- chelate forms of micronutrientse6
- Setting
- GREENHOUSEt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“A COMPARISON OF THE EFFECT OF MINERAL AND CHELATE FORMS OF COPPER, ZINC AND MANGANESE ON YIELD AND NUTRIENT STATUS OF GREENHOUSE LETTUCE”
e6“Leaves of lettuce grown on substrate with mineral forms of copper, zinc and manganese contained significantly more manganese than those grown in substrate with chelate forms of micronutrients”
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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.