Abstract
Two field experiments were conducted at the Rice Research and Training Center (Etai El-Baroud Agricultural Research Station Farm) to study the effect of different preceding crops and different nitrogen fertilizer levels on the productivity of Gin 177 rice cultivar in two consecutive seasons (1996 and 1997). Rice was grown after clover, broad bean. red radish and wheat. Nitrogen fertilizer was applied to the rice crop at the rate of 0. 96 and 144 kg N/ha in the urea form. The main results indicted that increasing nitrogen levels up to 144 kg/ha significantly increased plant height, panice length, plant biomass, grain yield and yield and yield components as well as harvest index in the two growing seasons regardless of the previous crop. Highest values of yield and yield components were obtained when rice was grown after legume crops followed by red radish, while the lowest values of these traits were obtained when rice was grown after wheat in both seasons. Data showed also that nitrogen controgen content and uptake increased significantly by increasing the nitrogen fertilizer level to 144-kg N/ha. Higher agronomic efficiency (kg rice/kg nitrogen applied) was found when rice was grown after legume crops and fertilized with 96 kg N/ha. The study concluded that 96 kg N/ha was the optimum and economical dose for reasonable productivity of Giza 177 when grown after legume crops and 144 kg N/ha if grown after non legume crops.
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Claims 8
Claim · model-written summary
Increasing nitrogen up to 144 kg/ha significantly increased rice plant height, panicle length and plant biomass regardless of the preceding crop.
- Taxon
- Rice
Oryza sativae2 - Treatment
- increasing nitrogen levels up to 144 kg/hae0
- Outcome
- plant height, panice length, plant biomasse1
- Direction
- increaseinferrede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing nitrogen levels up to 144 kg/ha”
e1“plant height, panice length, plant biomass”
e2“Rice was grown after clover”
Claim · model-written summary
Increasing nitrogen up to 144 kg/ha significantly increased rice grain yield, yield components and harvest index.
- Taxon
- RiceOryza sativae2
- Treatment
- increasing nitrogen levels up to 144 kg/hae0
- Outcome
- grain yield and yield and yield components as well as harvest indexe1
- Direction
- increaseinferrede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing nitrogen levels up to 144 kg/ha”
e1“grain yield and yield and yield components as well as harvest index”
e2“Rice was grown after clover”
Claim · model-written summary
Nitrogen content and uptake of rice increased significantly with the nitrogen level raised to 144 kg N/ha.
- Taxon
- RiceOryza sativae2
- Treatment
- nitrogen fertilizer level to 144-kg N/hae0
- Outcome
- nitrogen controgen content and uptakee1
- Direction
- increaseinferrede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nitrogen fertilizer level to 144-kg N/ha”
e1“Data showed also that nitrogen controgen content and uptake”
e2“Rice was grown after clover”
Claim · model-written summary
Yield and yield components of rice were highest when grown after legume crops.
- Taxon
- riceOryza sativae0
- Treatment
- legume cropse0
- Outcome
- yield and yield componentse0
- Direction
- Higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest values of yield and yield components were obtained when rice was grown after legume crops”
e1“Rice was grown after clover”
Claim · model-written summary
Yield and yield components of rice were lowest when grown after wheat in both seasons.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lowest values of these traits”
e1“rice was grown after wheat in both seasons”
Claim · model-written summary
Agronomic efficiency (kg rice per kg nitrogen applied) was higher when rice was grown after legume crops and fertilized with 96 kg N/ha.
- Taxon
- riceOryza sativae0
- Treatment
- legume crops and fertilized with 96 kg N/hae0
- Outcome
- kg rice/kg nitrogen appliede0
- Direction
- higherinferrede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“(kg rice/kg nitrogen applied) was found when rice was grown after legume crops and fertilized with 96 kg N/ha”
Claim · model-written summary
The authors conclude that 96 kg N/ha is the optimum and economical dose for reasonable productivity of Giza 177 rice after legume crops.
- Taxon
- RICEOryza sativat0
- Outcome
- optimum and economical dosee0
- Value
- 96 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“96 kg N/ha was the optimum and economical dose for”
Claim · model-written summary
The authors conclude that 144 kg N/ha is the recommended dose for Giza 177 rice when grown after non-legume crops.
- Taxon
- RICEOryza sativat0
- Outcome
- optimum and economical dosee0
- Value
- 144 kg N/hae1
- Qualifier
- if grown after non legume cropse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“96 kg N/ha was the optimum and economical dose for”
e1“144 kg N/ha if grown after non legume crops”
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