Abstract
We conducted two experiments usingprilled urea and urea super granule to examine the effects of nitrogen sourceand water stress on rice yield and nitrogen use efficiency. The experimentaltreatments were 0, 25, 50, 75 and 100 kg N ha-1 (experiment 1). Thewater stress treatments were: no fertilizer + continuous standing water, waterstress before first urea top dress, water stress before second urea top dress,water stress before third urea top dress, water stress before first, second andthird urea top dress and all fertilizers+continuousstanding water (experiment 2). The experiment was laid out in a randomizedcomplete block design with four replications. BRRI dhan49 was used as plantingmaterial. Urea super granule at 75 kg N ha-1 was enough for riceproduction in aman season and save 25 kg N ha-1 which was equivalentto 55 kg urea. During application of prilled urea water stress before third topdress performed better than continuous standing water in terms of grain yieldand nitrogen use efficiency.
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Claims 2
Claim · model-written summary
Urea super granule at 75 kg N/ha was sufficient for rice production in the aman season and saved 25 kg N/ha.
- Taxon
- rice
Oryza sativae1 - Treatment
- Urea super granule at 75 kg N ha-1e1
- Outcome
- riceproductione1
- Value
- 25 kg N ha-1e1
- Qualifier
- save 25 kg N ha-1 which was equivalentto 55 kg ureae1
- Setting
- aman seasone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Urea super granule at 75 kg N ha-1 was enough for riceproduction in aman season and save 25 kg N ha-1 which was equivalentto 55 kg urea”
Claim · model-written summary
Water stress before the third top dress performed better than continuous standing water for grain yield and nitrogen use efficiency of rice with prilled urea.
- Taxon
- riceOryza sativae1
- Material
- BRRI dhan49e3
- Treatment
- water stress before third topdresse2
- Outcome
- grain yieldand nitrogen use efficiencye2
- Direction
- performed bettere2
- Comparator
- continuous standing watere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Urea super granule at 75 kg N ha-1 was enough for riceproduction in aman season and save 25 kg N ha-1 which was equivalentto 55 kg urea”
e2“During application of prilled urea water stress before third topdress performed better than continuous standing water in terms of grain yieldand nitrogen use efficiency”
e3“BRRI dhan49 was used as plantingmaterial”
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