Abstract
High Resolution Image Download MS PowerPoint Slide Improving nitrogen (N) use efficiency (NUE) is necessary to reduce the entry of excess N into the environment and to retain N in the soil. Few studies have been done on dual-purpose slow-release fertilizers using urea and zinc (Zn). In this study, a new Zn-incorporated urea slow-release fertilizer with diatomite (DE) and nano diatomite (NDE) was synthesized by matrix-type formulation. The treatments included the following: C: control, U: urea, Zn: zinc sulfate, UZn: urea–Zn complex, UZn–DE: urea–Zn–diatomite, and UZn–NDE: urea–Zn–nano diatomite. The slow-release urea–Zn fertilizers (SRUZns) were characterized, and then the releasing behavior of these in the soil was monitored. A greenhouse study was carried out to check the agronomic effects of the maize ( Zea mays L.). Instrumental analyses approved the binding of the UZn complex into DE and NDE. Usage of SRUZns leads to better retention of NH 4 + relative to NO 3 – . The nano diatomite was twice as effective as diatomite in NH 4 + retention in soil. The cumulative losses of available Zn in the soil were the lowest upon UZn–NDE application. A pot study revealed that UZn fertilizers boosted crop growth in comparison to urea and zinc sulfate. N uptake increased 44.8% in the application of UZn–NDE compared to the U, and Zn uptake in soils supplied with the same treatment was 34.37% more than the ZnSO 4 application. The NUE increased by about 50% in plants supplied by nano slow-release compared to U. The results showed that the dual-purpose SRUZns with slow-release behavior could be reflected as well-organized N and Zn fertilizers in agricultural and horticultural areas with minimal environmental effluence.
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Claims 7
Claim · model-written summary
Slow-release urea–Zn fertilizers retained more soil ammonium than nitrate.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“Usage of SRUZns leads to better retention of NH 4 + relative to NO 3 – .”
Claim · model-written summary
Nano diatomite was twice as effective as diatomite in retaining soil ammonium.
- Treatment
- nano diatomitee0
- Outcome
- NH 4 + retention in soile0
- Direction
- twice as effectivee0
- Value
- twicee0
- Comparator
- diatomitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“The nano diatomite was twice as effective as diatomite in NH 4 + retention in soil.”
Claim · model-written summary
UZn–NDE gave the lowest cumulative losses of available soil zinc.
- Treatment
- UZn–NDE applicatione0
- Outcome
- cumulative losses of available Zn in the soile0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“The cumulative losses of available Zn in the soil were the lowest upon UZn–NDE application.”
Claim · model-written summary
UZn fertilizers boosted maize growth compared with urea and zinc sulfate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“A pot study revealed that UZn fertilizers boosted crop growth in comparison to urea and zinc sulfate.”
Claim · model-written summary
UZn–NDE increased maize nitrogen uptake 44.8% over urea.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“N uptake increased 44.8% in the application of UZn–NDE compared to the U”
Claim · model-written summary
UZn–NDE increased zinc uptake 34.37% over zinc sulfate.
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“Zn uptake in soils supplied with the same treatment was 34.37% more than the ZnSO 4 application.”
Claim · model-written summary
Nano slow-release fertilizer increased maize NUE about 50% relative to urea.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“The NUE increased by about 50% in plants supplied by nano slow-release compared to U.”
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