Abstract
Combined nitrogen (N) and sulfur (S) fertilization is a good management strategy to reduce N loss and increase the efficiency of N fertilizers to achieve high grain yields and quality. Field trials for 2 yrs. (2018–2019) were conducted to evaluate the comparative advantage of conventional urea (150 N kg ha−1) compared to urea+ ammonium sulfate (150 N kg ha−1), urea+ calcium sulfate (150 N kg ha−1), and urea cocrystals (CaSO4.4urea) (150 N kg ha−1) when applied as nitrogen fertilizers to the maize. The statistics show a significant treatments effect on developed corn cobs, fresh and dry cob yields and grain yield, with 1000 grains with better results in 2019 than in 2018. The fertilization treatments affected grain yields significantly for 2018 and 2019, respectively. Urea+ ammonium sulfate and urea cocrystal provided a significant increase in grain yields by 10.5% and 7.50%, respectively, compared to urea in 2018, w1hereas, in 2019, urea cocrystal supplied the grain yields with a significant increase of 23.07% compared to urea, followed by urea + calcium sulfate which provided a 10.46% increase compared to urea. The study highlights that using urea-sulfur fertilizers enhanced the release of mineral nitrogen in the soil, improved the grain’s N uptake by the plant and increased maize grain yields.
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Claims 8
Claim · model-written summary
Cob development, cob yields, grain yield and thousand-grain results were better in 2019 than 2018.
- Treatment
- treatmentse0
- Outcome
- developed corn cobs, fresh and dry cob yields and grain yield, with 1000 grainse0
- Direction
- bettere0
- Comparator
- 2018e0
- Setting
- 2019e0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The statistics show a significant treatments effect on developed corn cobs, fresh and dry cob yields and grain yield, with 1000 grains with better results in 2019 than in 2018”
t0“Maize”
Claim · model-written summary
Urea plus ammonium sulfate increased grain yield 10.5% relative to urea in 2018.
- Treatment
- Urea+ ammonium sulfatee0
- Outcome
- grain yieldse0
- Direction
- increasee0
- Value
- 10.5%e0
- Comparator
- ureae0
- Setting
- 2018e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Urea+ ammonium sulfate and urea cocrystal provided a significant increase in grain yields by 10.5% and 7.50%, respectively, compared to urea in 2018”
t0“Maize”
Claim · model-written summary
Urea cocrystal increased grain yield 7.50% relative to urea in 2018.
- Treatment
- urea cocrystale0
- Outcome
- grain yieldse0
- Direction
- increasee0
- Value
- 7.50%e0
- Comparator
- ureae0
- Setting
- 2018e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Urea+ ammonium sulfate and urea cocrystal provided a significant increase in grain yields by 10.5% and 7.50%, respectively, compared to urea in 2018”
t0“Maize”
Claim · model-written summary
Urea cocrystal increased grain yield 23.07% relative to urea in 2019.
- Treatment
- urea cocrystale0
- Outcome
- grain yieldse0
- Direction
- increasee0
- Value
- 23.07%e0
- Comparator
- ureae0
- Setting
- 2019e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 2019, urea cocrystal supplied the grain yields with a significant increase of 23.07% compared to urea”
t0“Maize”
Claim · model-written summary
Urea plus calcium sulfate increased grain yield 10.46% relative to urea in 2019.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“urea + calcium sulfate which provided a 10.46% increase compared to urea”
t0“Maize”
Claim · model-written summary
Urea-sulfur fertilizers enhanced soil mineral nitrogen release.
- Treatment
- urea-sulfur fertilizerse0
- Outcome
- release of mineral nitrogen in the soile0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using urea-sulfur fertilizers enhanced the release of mineral nitrogen in the soil”
t0“Maize”
Claim · model-written summary
Urea-sulfur fertilizers improved grain nitrogen uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using urea-sulfur fertilizers enhanced the release of mineral nitrogen in the soil, improved the grain’s N uptake by the plant and increased maize grain yields”
t0“Maize”
Claim · model-written summary
Urea-sulfur fertilizers increased maize grain yields overall.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using urea-sulfur fertilizers enhanced the release of mineral nitrogen in the soil, improved the grain’s N uptake by the plant and increased maize grain yields”
t0“Maize”
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