Abstract
The nitrogen efficiency is very low for rice plant under irrigated ecosystem, might be due to increasing of nitrogen losses through different ways. To increase N efficiency by using slow release nitrogen fertilizer, two field experiments were carried out at the Farm of Rice Research and Training Center (RRTC), Sakha , Kafer-El-Sheik, Egypt, during the two successive seasons of 2008 and 2009 to study the response of Sakha 106 rice variety to different levels of slow release N-fertilizer (Enciabien ) i.e. 0.30,40,50 and 60 kg N/fed compared with 60 kgN /fed as urea form . The obtained results revealed that the application of 60 Kg N/ fed as urea or Enciabien gave the tallest plant, while the same rates as urea produced more tillers and dry matter content. Moreover, there was any significant among all the N-treatments in leaf area index (LAI). As for yield and its attributes, adding nitrogen at the rates of 50 and 60 kg N/fed as Enciabien or 60 kg N/fed as urea gave the highest number of panicles/hill, while number of filled grains /panicle was responded to 40 kg N / fed without any significant difference with 50 and 60 kg N/fed as urea or Enciabien and unfilled grains up to 60 kg N/fed as urea or Enciabien. The results also indicated that there were any significant difference among all the N- treatments in panicle weight, 1000-grain weight and grain yield, while straw yields reached to its maximum under the rates starting with 40 up to 60 kg N/fed as urea or Enciabien. Nitrogen % reached to the highest value in grain yield under the rate of60 kg N/fed as Enciabien and under both 50 and 60 kg N/fed in straw, while nitrogen accumulation was the greatest when rice received 60kgN/fed as Enciabien or 60 kg N/fed as urea in straw. Agronomic efficiency (AE) was the highest under the lowest N-level and reached to the minimum vales under the highest N-rates.
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Claims 15
Claim · model-written summary
60 Kg N/ fed as urea or Enciabien gave the tallest rice plants.
- Taxon
- RICE
Oryza sativat0 - Treatment
- 60 Kg N/ fed as urea or Enciabiene0
- Outcome
- tallest plante0
- Direction
- talleste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 60 Kg N/ fed as urea or Enciabien gave the tallest plant”
t0“RICE”
Claim · model-written summary
The same urea rate produced more rice tillers.
- Taxon
- RICEOryza sativat0
- Treatment
- ureae0
- Outcome
- tillerse0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the same rates as urea produced more tillers and dry matter content”
t0“RICE”
Claim · model-written summary
The same urea rate produced more dry matter content.
- Taxon
- RICEOryza sativat0
- Treatment
- ureae0
- Outcome
- dry matter contente0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the same rates as urea produced more tillers and dry matter content”
t0“RICE”
Claim · model-written summary
Leaf area index did not differ significantly among nitrogen treatments.
- Taxon
- RICEOryza sativat0
- Treatment
- N-treatmentse0
- Outcome
- leaf area index (LAI)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was any significant among all the N-treatments in leaf area index (LAI)”
t0“RICE”
Claim · model-written summary
Enciabien at 50 and 60 kg N/fed or urea at 60 kg N/fed gave the most panicles per hill.
- Taxon
- RICEOryza sativat0
- Treatment
- 50 and 60 kg N/fed as Enciabien or 60 kg N/fed as ureae0
- Outcome
- number of panicles/hille0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“adding nitrogen at the rates of 50 and 60 kg N/fed as Enciabien or 60 kg N/fed as urea gave the highest number of panicles/hill”
t0“RICE”
Claim · model-written summary
Filled grains per panicle responded to 40 kg N/fed without significant difference from higher rates.
- Taxon
- RICEOryza sativat0
- Treatment
- 40 kg N / fede0
- Outcome
- number of filled grains /paniclee0
- Comparator
- 50 and 60 kg N/fed as urea or Enciabiene0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of filled grains /panicle was responded to 40 kg N / fed without any significant difference with 50 and 60 kg N/fed as urea or Enciabien”
t0“RICE”
Claim · model-written summary
Panicle weight did not differ significantly among nitrogen treatments.
- Taxon
- RICEOryza sativat0
- Treatment
- N- treatmentse0
- Outcome
- panicle weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were any significant difference among all the N- treatments in panicle weight, 1000-grain weight and grain yield”
t0“RICE”
Claim · model-written summary
Thousand grain weight did not differ significantly among nitrogen treatments.
- Taxon
- RICEOryza sativat0
- Treatment
- N- treatmentse0
- Outcome
- 1000-grain weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were any significant difference among all the N- treatments in panicle weight, 1000-grain weight and grain yield”
t0“RICE”
Claim · model-written summary
Grain yield did not differ significantly among nitrogen treatments.
- Taxon
- RICEOryza sativat0
- Treatment
- N- treatmentse0
- Outcome
- grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were any significant difference among all the N- treatments in panicle weight, 1000-grain weight and grain yield”
t0“RICE”
Claim · model-written summary
Straw yield peaked at 40 to 60 kg N/fed as urea or Enciabien.
- Taxon
- RICEOryza sativat0
- Treatment
- 40 up to 60 kg N/fed as urea or Enciabiene0
- Outcome
- straw yieldse0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“straw yields reached to its maximum under the rates starting with 40 up to 60 kg N/fed as urea or Enciabien”
t0“RICE”
Claim · model-written summary
Grain nitrogen percentage peaked with 60 kg N/fed Enciabien.
- Taxon
- RICEOryza sativat0
- Treatment
- 60 kg N/fed as Enciabiene0
- Outcome
- Nitrogen %e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen % reached to the highest value in grain yield under the rate of60 kg N/fed as Enciabien”
t0“RICE”
Claim · model-written summary
Straw nitrogen percentage peaked at 50 and 60 kg N/fed.
- Taxon
- RICEOryza sativat0
- Organ / stage
- strawe0
- Treatment
- 50 and 60 kg N/fede0
- Outcome
- Nitrogen %e1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under both 50 and 60 kg N/fed in straw”
e1“Nitrogen % reached to the highest value”
t0“RICE”
Claim · model-written summary
Straw nitrogen accumulation was greatest with 60 kg N/fed of either fertilizer.
- Taxon
- riceOryza sativae0
- Organ / stage
- strawe0
- Treatment
- 60kgN/fed as Enciabien or 60 kg N/fed as ureae0
- Outcome
- nitrogen accumulatione0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen accumulation was the greatest when rice received 60kgN/fed as Enciabien or 60 kg N/fed as urea in straw”
Claim · model-written summary
Agronomic efficiency was highest at the lowest nitrogen level.
- Taxon
- RICEOryza sativat0
- Treatment
- lowest N-levele0
- Outcome
- Agronomic efficiency (AE)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Agronomic efficiency (AE) was the highest under the lowest N-level”
t0“RICE”
Claim · model-written summary
Agronomic efficiency was lowest at the highest nitrogen rates.
- Taxon
- RICEOryza sativat0
- Treatment
- highest N-ratese0
- Outcome
- Agronomic efficiency (AE)e1
- Direction
- minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reached to the minimum vales under the highest N-rates”
e1“Agronomic efficiency (AE)”
t0“RICE”
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