Abstract
Nitrogen is the most limiting nutrient in rice production. Nitrogen fertilizer is susceptible to losses through volatilization, denitrification and leaching. The time of application often does not match with period of crop demand. Adjusting the timing of nutrient application especially nitrogen could potentially improve the nutrient uptake and reduce nutrient losses to allow better nutrient efficiency. A greenhouse experiment was conducted to determine the best of nitrogen fertilizer application timing to improve development and rice production of two Malaysian rice cultivars (MR219 and MR269). The experiment consisted of four treatments applied each at 120 kg ha-1 of N in the form of urea. For T1, N was applied on 15, 35 and 55, T2 was applied on 12, 32, and 52, T3 was applied on 18,38 and 58, and T4 was applied on 21, 41 and 61 days after seeding (DAS) with three replications. Plant physiological parameters such as plant height, tiller, panicle, straw, SPAD and 100-grain weight did not show significant differences. Only total grain weight showed significant differences among the treatments. The application of N also resulted in an increase by 12.13% in plant biomass. The results demonstrate that the split application of fertilizer N at PI stage (58 DAS) significantly increased percentage of 100-grain weight and total grain yield compared to the control treatment, which is applied on 15, 35, and 55 DAS. Farmers should be advised to apply N between 52 DAS and 58 DAS, even though application of N at 58 DAS was significantly better than 55 DAS in terms of yield production.
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Claims 7
Claim · model-written summary
Plant height, tiller number and panicle number showed no significant differences among N application timings.
- Taxon
- rice
Oryza sativat0 - Treatment
- N application timingt1
- Outcome
- plant height, tiller, paniclee0
- Direction
- did not show significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“N application timing”
e0“Plant physiological parameters such as plant height, tiller, panicle, straw, SPAD and 100-grain weight did not show significant differences”
Claim · model-written summary
Straw, SPAD and 100-grain weight showed no significant differences among N application timings.
- Taxon
- riceOryza sativat0
- Treatment
- N application timingt1
- Outcome
- straw, SPAD and 100-grain weighte0
- Direction
- did not show significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“N application timing”
e0“Plant physiological parameters such as plant height, tiller, panicle, straw, SPAD and 100-grain weight did not show significant differences”
Claim · model-written summary
Only total grain weight showed significant differences among the treatments.
- Taxon
- riceOryza sativat0
- Treatment
- treatmentse0
- Outcome
- total grain weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Only total grain weight showed significant differences among the treatments”
Claim · model-written summary
The application of N increased plant biomass by 12.13%.
- Taxon
- riceOryza sativat0
- Treatment
- application of Ne0
- Outcome
- plant biomasse0
- Direction
- increasee0
- Value
- 12.13%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The application of N also resulted in an increase by 12.13% in plant biomass”
Claim · model-written summary
Split N application at the PI stage (58 DAS) significantly increased percentage of 100-grain weight and total grain yield compared with the control applied on 15, 35 and 55 DAS.
- Taxon
- riceOryza sativat0
- Treatment
- split application of fertilizer N at PI stage (58 DAS)e0
- Outcome
- percentage of 100-grain weight and total grain yielde0
- Direction
- increasede0
- Comparator
- control treatment, which is applied on 15, 35, and 55 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“the split application of fertilizer N at PI stage (58 DAS) significantly increased percentage of 100-grain weight and total grain yield compared to the control treatment, which is applied on 15, 35, and 55 DAS”
Claim · model-written summary
N application at 58 DAS was significantly better than at 55 DAS in terms of yield production.
- Taxon
- riceOryza sativat0
- Treatment
- application of N at 58 DASe0
- Outcome
- yield productione0
- Direction
- bettere0
- Comparator
- 55 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“application of N at 58 DAS was significantly better than 55 DAS in terms of yield production”
Claim · model-written summary
Farmers should be advised to apply N between 52 DAS and 58 DAS.
- Taxon
- riceOryza sativat0
- Outcome
- apply N between 52 DAS and 58 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Farmers should be advised to apply N between 52 DAS and 58 DAS”
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