Abstract
Nitrogen is one of the most limiting element for the growth and yield of rice. However, the imbalance use of conventional urea leads to loss of nitrogen from rice field, decrease nitrogen use efficiency, increase environmental pollution and cost of cultivation. This study was done to evaluate the response of polymer coated urea (PCU) and urea briquette (UB) on the yield and nitrogen use efficiencies (NUE) of rice on a sandy loam soil. The experiment was conducted at the agronomy research farm of Agriculture and Forestry University during the rainy season of 2018 in a randomized complete block design with three replications for each treatment (T1 - control, 0 kg N ha-1; T2- Prilled urea, 150 kg N ha-1 single application at basal; T3- Prilled urea, 150 kg N ha-1 standard split application; T4-PCU, 150 kg N ha-1 single application at basal; T5-UB, 150 kg N ha-1 single application at basal). The data on yield, and NUE were recorded and analyzed by using R studio. The physical and economic maximum dose of Nitrogen for these different types of urea were also calculated. Compared with single application of Prilled urea (3698 kg ha-1), rice fertilized with Prilled urea with standard split application (4747 kg ha-1), single application of PCU (5183 kg ha-1) and BU (4787 kg ha-1) had significantly higher grain yield and NUE. Economic maximum dose of nitrogen was reduced greatly for the single application of PCU (124 kg N ha-1) compared to Prilled urea with standard split application (167 kg N ha-1). Single application of PCU and UB can be considered as an alternative nitrogen fertilizer for rice even in the sandy loam soil.
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Claims 8
Claim · model-written summary
Single application of PCU gave higher rice grain yield than single prilled urea
- Taxon
- rice
Oryza sativae1 - Treatment
- single application of PCUe1
- Outcome
- grain yielde1
- Direction
- highere1
- Value
- 5183 kg ha-1e1
- Comparator
- single application of Prilled ureae1
- Setting
- agronomy research farm of Agriculture and Forestry Universitye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Compared with single application of Prilled urea (3698 kg ha-1), rice fertilized with Prilled urea with standard split application (4747 kg ha-1), single application of PCU (5183 kg ha-1) and BU (4787 kg ha-1) had significantly higher grain yield and NUE”
e2“The experiment was conducted at the agronomy research farm of Agriculture and Forestry University during the rainy season of 2018”
Claim · model-written summary
Standard split application of prilled urea gave higher rice grain yield than single prilled urea
- Taxon
- riceOryza sativae1
- Treatment
- Prilled urea with standard split applicatione1
- Outcome
- grain yielde1
- Direction
- highere1
- Value
- 4747 kg ha-1e1
- Comparator
- single application of Prilled ureae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Compared with single application of Prilled urea (3698 kg ha-1), rice fertilized with Prilled urea with standard split application (4747 kg ha-1), single application of PCU (5183 kg ha-1) and BU (4787 kg ha-1) had significantly higher grain yield and NUE”
Claim · model-written summary
Single application of BU gave higher rice grain yield than single prilled urea
- Taxon
- riceOryza sativae1
- Treatment
- BUe1
- Outcome
- grain yielde1
- Direction
- highere1
- Value
- 4787 kg ha-1e1
- Comparator
- single application of Prilled ureae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Compared with single application of Prilled urea (3698 kg ha-1), rice fertilized with Prilled urea with standard split application (4747 kg ha-1), single application of PCU (5183 kg ha-1) and BU (4787 kg ha-1) had significantly higher grain yield and NUE”
Claim · model-written summary
Single application of PCU gave higher rice NUE than single prilled urea
- Taxon
- riceOryza sativae1
- Treatment
- single application of PCUe1
- Outcome
- NUEe1
- Direction
- highere1
- Comparator
- single application of Prilled ureae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Compared with single application of Prilled urea (3698 kg ha-1), rice fertilized with Prilled urea with standard split application (4747 kg ha-1), single application of PCU (5183 kg ha-1) and BU (4787 kg ha-1) had significantly higher grain yield and NUE”
Claim · model-written summary
Standard split application of prilled urea gave higher rice NUE than single prilled urea
- Taxon
- riceOryza sativae1
- Treatment
- Prilled urea with standard split applicatione1
- Outcome
- NUEe1
- Direction
- highere1
- Comparator
- single application of Prilled ureae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Compared with single application of Prilled urea (3698 kg ha-1), rice fertilized with Prilled urea with standard split application (4747 kg ha-1), single application of PCU (5183 kg ha-1) and BU (4787 kg ha-1) had significantly higher grain yield and NUE”
Claim · model-written summary
BU gave higher rice NUE than single prilled urea
- Taxon
- riceOryza sativae1
- Treatment
- BUe1
- Outcome
- NUEe1
- Direction
- highere1
- Comparator
- single application of Prilled ureae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Compared with single application of Prilled urea (3698 kg ha-1), rice fertilized with Prilled urea with standard split application (4747 kg ha-1), single application of PCU (5183 kg ha-1) and BU (4787 kg ha-1) had significantly higher grain yield and NUE”
Claim · model-written summary
Single application of PCU reduced the economic maximum nitrogen dose to 124 kg N ha-1, compared with 167 kg N ha-1 for split prilled urea
- Taxon
- riceOryza sativat0
- Treatment
- single application of PCUe3
- Outcome
- Economic maximum dose of nitrogene3
- Direction
- reducede3
- Value
- 124 kg N ha-1e3
- Comparator
- Prilled urea with standard split applicatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nitrogen use efficiency of rice”
e3“Economic maximum dose of nitrogen was reduced greatly for the single application of PCU (124 kg N ha-1) compared to Prilled urea with standard split application (167 kg N ha-1)”
Claim · model-written summary
Single application of PCU and UB can be considered an alternative nitrogen fertilizer for rice even in sandy loam soil
- Taxon
- riceOryza sativae4
- Outcome
- Single application of PCU and UBe4
- Qualifier
- even in the sandy loam soile4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Single application of PCU and UB can be considered as an alternative nitrogen fertilizer for rice even in the sandy loam soil”
The same questions in other papers
nitrogen · nutrient: efficiency · Oryza sativa (rice)Positive and negative results
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- positive
- positive
- positive
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See all 262 papers →nitrogen · yield · Oryza sativa (rice)Positive and negative results
1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative
- positive
- positive
- positive
2,041 papers more in this group
See all 2,045 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.