Abstract
Two sets of field experiments under seedling transplanting and drill row seed planting methods were conducted side by side for two years during the main cropping seasons of 2017 and 2018 in Fogera Plain of northwest Ethiopia to study the effect of different sources, application methods and time of nitrogen fertilizer on growth and yield of rain-fed lowland rice. Three N sources of fertilizers (conventional Urea, Urea super-granule, and slow-release Urea) with six, one, and three application methods and times, respectively were laid out in a randomized complete block design (RCBD) in three replicates. These treatments and design were equally applied for two sets of experiments under both planting methods. Results revealed that soil-plant analysis development (SPAD) value, LAI, and biomass and grain yields of rain-fed lowland rice were highest with Urea supergranule N fertilizer sources followed by slow-release Urea and conventional Urea applications in both planting methods. Average grain yields of 3.7 and 3.8 tons ha−1 of rain-fed lowland rice were recorded with the application of Urea supergranule N source fertilizer under seedling transplanting and drill row seed planting methods, respectively. Hence, using Urea supergranule tablet is recommendable for getting better grain yield of rain-fed lowland rice without yield penalty in both planting methods.
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Claims 7
Claim · model-written summary
Urea supergranule gave the highest SPAD value in both planting methods.
Verbatim
e0“Results revealed that soil-plant analysis development (SPAD) value, LAI, and biomass and grain yields of rain-fed lowland rice were highest with Urea supergranule N fertilizer sources followed by slow-release Urea and conventional Urea applications in both planting methods.”
Claim · model-written summary
Urea supergranule gave the highest LAI in both planting methods.
Verbatim
e0“Results revealed that soil-plant analysis development (SPAD) value, LAI, and biomass and grain yields of rain-fed lowland rice were highest with Urea supergranule N fertilizer sources followed by slow-release Urea and conventional Urea applications in both planting methods.”
Claim · model-written summary
Urea supergranule gave the highest biomass yield in both planting methods.
Verbatim
e0“Results revealed that soil-plant analysis development (SPAD) value, LAI, and biomass and grain yields of rain-fed lowland rice were highest with Urea supergranule N fertilizer sources followed by slow-release Urea and conventional Urea applications in both planting methods.”
Claim · model-written summary
Urea supergranule gave the highest grain yield in both planting methods.
Verbatim
e0“Results revealed that soil-plant analysis development (SPAD) value, LAI, and biomass and grain yields of rain-fed lowland rice were highest with Urea supergranule N fertilizer sources followed by slow-release Urea and conventional Urea applications in both planting methods.”
Claim · model-written summary
Under seedling transplanting, Urea supergranule produced average grain yield of 3.7 tons ha−1.
Verbatim
e0“Average grain yields of 3.7 and 3.8 tons ha−1 of rain-fed lowland rice were recorded with the application of Urea supergranule N source fertilizer under seedling transplanting and drill row seed planting methods, respectively.”
Claim · model-written summary
Under drill row seed planting, Urea supergranule produced average grain yield of 3.8 tons ha−1.
Verbatim
e0“Average grain yields of 3.7 and 3.8 tons ha−1 of rain-fed lowland rice were recorded with the application of Urea supergranule N source fertilizer under seedling transplanting and drill row seed planting methods, respectively.”
Claim · model-written summary
The authors recommend Urea supergranule tablets for better rice grain yield under both planting methods.
Verbatim
e0“Hence, using Urea supergranule tablet is recommendable for getting better grain yield of rain-fed lowland rice without yield penalty in both planting methods.”
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