Abstract
Presently, there is a growing interest in developing new controlled-release fertilizers based on ecological raw materials. The present study aims to compare the efficacy of two new ureic-based controlled-release fertilizers formulated with water-soluble polymeric coatings enriched with humic acids or seaweed extracts. To this end, an experimental approach was designed under controlled greenhouse conditions by carrying out its subsequent field scaling. Different physiological parameters and crop yield were measured by comparing the new fertilizers with another non polymeric-coated fertilizer, ammonium nitrate, and an untreated ‘Control’. As a result, on the microscale the fertilizer enriched with humic acids favored a better global response in the photosynthetic parameters and nutritional status of wheat plants. A significant 1.2-fold increase in grain weight yield and grain number was obtained with the humic acid polymeric fertilizer versus that enriched with seaweed extracts; and also, in average, higher in respect to the uncoated one. At the field level, similar results were confirmed by lowering N doses by 20% when applying the humic acid polymeric-coated produce compared to ammonium nitrate. Our results showed that the new humic acid polymeric fertilizer facilitated crop management and reduced the environmental impact generated by N losses, which are usually produced by traditional fertilizers.
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Claims 8
Claim · model-written summary
Humic-acid-enriched coated fertilizer improved wheat photosynthetic parameters.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- fertilizer enriched with humic acidse0
- Outcome
- photosynthetic parameterse0
- Direction
- bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fertilizer enriched with humic acids favored a better global response in the photosynthetic parameters and nutritional status of wheat plants.”
Claim · model-written summary
Humic-acid-enriched coated fertilizer improved wheat nutritional status.
- Taxon
- wheatTriticum aestivume0
- Treatment
- fertilizer enriched with humic acidse0
- Outcome
- nutritional statuse0
- Direction
- bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fertilizer enriched with humic acids favored a better global response in the photosynthetic parameters and nutritional status of wheat plants.”
Claim · model-written summary
Humic-acid polymeric fertilizer increased wheat grain weight yield 1.2-fold versus seaweed-extract fertilizer.
- Treatment
- humic acid polymeric fertilizere0
- Outcome
- grain weight yielde0
- Direction
- increasee0
- Value
- 1.2-folde0
- Comparator
- that enriched with seaweed extractse0
Not reportedTaxon
Verbatim
e0“A significant 1.2-fold increase in grain weight yield and grain number was obtained with the humic acid polymeric fertilizer versus that enriched with seaweed extracts”
Claim · model-written summary
Humic-acid polymeric fertilizer increased wheat grain number 1.2-fold versus seaweed-extract fertilizer.
- Treatment
- humic acid polymeric fertilizere0
- Outcome
- grain numbere0
- Direction
- increasee0
- Value
- 1.2-folde0
- Comparator
- that enriched with seaweed extractse0
Not reportedTaxon
Verbatim
e0“A significant 1.2-fold increase in grain weight yield and grain number was obtained with the humic acid polymeric fertilizer versus that enriched with seaweed extracts”
Claim · model-written summary
Humic-acid polymeric fertilizer produced higher grain yield and number on average than the uncoated fertilizer.
- Treatment
- humic acid polymeric fertilizere0
- Outcome
- grain weight yield and grain numbere0
- Direction
- highere0
- Comparator
- uncoated onee0
Not reportedTaxon
Verbatim
e0“A significant 1.2-fold increase in grain weight yield and grain number was obtained with the humic acid polymeric fertilizer versus that enriched with seaweed extracts; and also, in average, higher in respect to the uncoated one.”
Claim · model-written summary
At field scale, the humic-acid coated fertilizer achieved similar results to ammonium nitrate with 20% less nitrogen.
- Treatment
- humic acid polymeric-coated producee0
- Outcome
- similar resultse0
- Direction
- loweringe0
- Value
- 20%e0
- Comparator
- ammonium nitratee0
- Setting
- field levele0
Not reportedTaxon
Verbatim
e0“At the field level, similar results were confirmed by lowering N doses by 20% when applying the humic acid polymeric-coated produce compared to ammonium nitrate.”
Claim · model-written summary
The authors concluded that the humic-acid polymeric fertilizer facilitated crop management.
Not reportedTaxon
Verbatim
e0“the new humic acid polymeric fertilizer facilitated crop management and reduced the environmental impact generated by N losses”
Claim · model-written summary
The authors concluded that the humic-acid polymeric fertilizer reduced environmental impact from nitrogen losses.
- Treatment
- humic acid polymeric fertilizere0
- Outcome
- environmental impact generated by N lossese0
- Direction
- reducede0
Not reportedTaxon
Verbatim
e0“the new humic acid polymeric fertilizer facilitated crop management and reduced the environmental impact generated by N losses”
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