Abstract
A field experiment was conducted at Sakha Agricultural Research Station Farm, during the two successive growing seasons (2008 and 2009) to study the effect of watering level and planting method on yield and crop water productivity of two rice varieties, Giza 177 and Egyptian Hybrid 1. Statistical design was split split plot; main plots were allocated to planting method (broadcasting and transplanting), while sub-plots were assigned to be rice varieties (Giza 177 and Egyptian Hybrid 1). Sub-sub plots were the watering levels; watering as traditional in the area (Trad.), 75% of traditional watering ( 0.75 Trad.) and watering according to Ibrahim equation,1981 (Ib. eq.). The obtained results can be summarized as follows: Watering level affected plant height, where watering according Ibrahim equation reduced plant height of rice plant by 5.02 % in the first season and by 6.97 % in the second one. Decreasing watering level from traditional method to 0.75 of traditional method reduced grain yield by 49 Kg fed-1 in the first season and 33 Kg fed-1 in the second season ( in both seasons the difference is not significant ). Decreasing watering level from traditional method to watering according Ibrahim equation reduced grain yield by 673.5 Kg fed-1 (14.55 % reduction) in the first season and by 630 fed-1 (13.91% reduction) in the second season ( in both seasons the difference is highly significant ). Grain /Straw Ratio of variety treatment means were 0.700 for Giza 177 and 0.980 for Egyptian hybrid 1 in the first season and the corresponding values of the second season were 0.770 and 0.952 . Grain /Straw Ratio of Egyptian hybrid 1 was decreased with decreasing watering level under the study . The means of 1000 grain weight of Giza 177 were 25.68 and 25.82 gm in the first and second season, respectively. The means of 1000 grain weight of Egyptian hybrid 1 were 24.45 and 24.88 gm in the first and second season, respectively. watering according to 0.75 of traditional + Giza 177 assigned 3.310 gm rice grain panicle-1 compared with 3.055 and 2.685 gm panicle-1 for watering as traditional + Giza177 and watering according Ibrahim equation + Giza177 treatments, respectively. The same means for the same treatments in the second season were 3.275 gm panicle-1 compared with 2.865 and 2.890 gm panicle-1, respectively. In the first season watering according to traditional + Egyptian hybrid 1 assigned 4.385 gm rice grain panicle-1 compared with 4.025 and 3.600 gm panicle-1 for watering as 0.75 of traditional + Egyptian hybrid 1 and watering according Ibrahim equation + Egyptian hybrid 1 treatments, respectively. The same means for the same treatments in the second season were 4.540 gm panicle-1 compared with 4.165 and 3.595 gm panicle-1, respectively. The lower Crop water productivity values ( 0.747 and 0.718 kg m-3 ) were assigned with Giza 177 and the higher values (0.895 and 0.852 kg m-3) were assigned with the latest one ( Egyptian hybrid 1). Crop water productivity of traditional watering, 0.75 of traditional watering and watering according to Ibrahim equation treatment means were 0.705, 0.850 and 0.908 kg m-3 in the first season . Similar values for the same treatments in the same order in the second season were 0.703, 0.833 and 0820 kg m-3 .
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 18
Claim · model-written summary
Ibrahim-equation watering reduced rice plant height by 5.02% in the first season.
- Taxon
- RICE
Oryza sativat0 - Treatment
- watering according Ibrahim equatione1
- Outcome
- plant heighte1
- Direction
- reducede1
- Value
- 5.02 %e1
- Qualifier
- in the first seasone1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“watering according Ibrahim equation reduced plant height of rice plant by 5.02 % in the first season and by 6.97 % in the second one”
Claim · model-written summary
Ibrahim-equation watering reduced rice plant height by 6.97% in the second season.
- Taxon
- RICEOryza sativat0
- Treatment
- watering according Ibrahim equatione1
- Outcome
- plant heighte1
- Direction
- reducede1
- Value
- 6.97 %e1
- Qualifier
- in the second onee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“watering according Ibrahim equation reduced plant height of rice plant by 5.02 % in the first season and by 6.97 % in the second one”
Claim · model-written summary
Reducing watering to 0.75 of traditional reduced grain yield by 49 kg/fed in the first season; the difference was not significant.
- Taxon
- RICEOryza sativat0
- Treatment
- Decreasing watering level from traditional method to 0.75 of traditional methode2
- Outcome
- grain yielde2
- Direction
- reducede2
- Value
- 49 Kg fed-1e2
- Qualifier
- in the first seasone2
- Comparator
- traditional methode2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e2“Decreasing watering level from traditional method to 0.75 of traditional method reduced grain yield by 49 Kg fed-1 in the first season and 33 Kg fed-1 in the second season ( in both seasons the difference is not significant )”
Claim · model-written summary
Reducing watering to 0.75 of traditional reduced grain yield by 33 kg/fed in the second season; the difference was not significant.
- Taxon
- RICEOryza sativat0
- Treatment
- Decreasing watering level from traditional method to 0.75 of traditional methode2
- Outcome
- grain yielde2
- Direction
- reducede2
- Value
- 33 Kg fed-1e2
- Qualifier
- in the second seasone2
- Comparator
- traditional methode2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e2“Decreasing watering level from traditional method to 0.75 of traditional method reduced grain yield by 49 Kg fed-1 in the first season and 33 Kg fed-1 in the second season ( in both seasons the difference is not significant )”
Claim · model-written summary
Reducing watering to the Ibrahim-equation level reduced grain yield by 673.5 kg/fed (14.55%) in the first season, a highly significant difference.
- Taxon
- RICEOryza sativat0
- Treatment
- Decreasing watering level from traditional method to watering according Ibrahim equatione3
- Outcome
- grain yielde3
- Direction
- reducede3
- Value
- 673.5 Kg fed-1 (14.55 % reduction)e3
- Qualifier
- in the first seasone3
- Comparator
- traditional methode3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e3“Decreasing watering level from traditional method to watering according Ibrahim equation reduced grain yield by 673.5 Kg fed-1 (14.55 % reduction) in the first season and by 630 fed-1 (13.91% reduction) in the second season ( in both seasons the difference is highly significant )”
Claim · model-written summary
Reducing watering to the Ibrahim-equation level reduced grain yield by 630 kg/fed (13.91%) in the second season, a highly significant difference.
- Taxon
- RICEOryza sativat0
- Treatment
- Decreasing watering level from traditional method to watering according Ibrahim equatione3
- Outcome
- grain yielde3
- Direction
- reducede3
- Value
- 630 fed-1 (13.91% reduction)e3
- Qualifier
- in the second seasone3
- Comparator
- traditional methode3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e3“Decreasing watering level from traditional method to watering according Ibrahim equation reduced grain yield by 673.5 Kg fed-1 (14.55 % reduction) in the first season and by 630 fed-1 (13.91% reduction) in the second season ( in both seasons the difference is highly significant )”
Claim · model-written summary
In Egyptian hybrid 1, grain/straw ratio decreased as watering level decreased.
- Taxon
- RICEOryza sativat0
- Material
- Egyptian hybrid 1e5
- Treatment
- decreasing watering levele5
- Outcome
- Grain /Straw Ratioe5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e5“Grain /Straw Ratio of Egyptian hybrid 1 was decreased with decreasing watering level under the study”
Claim · model-written summary
Mean 1000-grain weight of Giza 177 was 25.68 and 25.82 gm in the first and second seasons.
- Taxon
- RICEOryza sativat0
- Material
- Giza 177e6
- Outcome
- 1000 grain weighte6
- Value
- 25.68 and 25.82 gme6
- Qualifier
- in the first and second seasone6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e6“The means of 1000 grain weight of Giza 177 were 25.68 and 25.82 gm in the first and second season”
Claim · model-written summary
Mean 1000-grain weight of Egyptian hybrid 1 was 24.45 and 24.88 gm in the first and second seasons.
- Taxon
- RICEOryza sativat0
- Material
- Egyptian hybrid 1e7
- Outcome
- 1000 grain weighte7
- Value
- 24.45 and 24.88 gme7
- Qualifier
- in the first and second seasone7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e7“The means of 1000 grain weight of Egyptian hybrid 1 were 24.45 and 24.88 gm in the first and second season”
Claim · model-written summary
With Giza 177 in the first season, watering at 0.75 of traditional gave higher grain weight per panicle (3.310 gm) than traditional watering (3.055 gm) and Ibrahim-equation watering (2.685 gm).
- Taxon
- RICEOryza sativat0
- Material
- Giza 177e1
- Treatment
- watering according to 0.75 of traditionale1
- Outcome
- rice grain panicle-1e1
- Direction
- higherinferrede1
- Value
- 3.310 gme1
- Qualifier
- compared with 3.055 and 2.685 gm panicle-1e1
- Comparator
- watering as traditionale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“watering according to 0.75 of traditional + Giza 177 assigned 3.310 gm rice grain panicle-1 compared with 3.055 and 2.685 gm panicle-1 for watering as traditional + Giza177 and watering according Ibrahim equation + Giza177 treatments”
Claim · model-written summary
With Giza 177 in the second season, watering at 0.75 of traditional gave higher grain weight per panicle (3.275 gm) than traditional watering and Ibrahim-equation watering.
- Taxon
- RICEOryza sativat0
- Material
- Giza 177e1
- Treatment
- watering according to 0.75 of traditionale1
- Outcome
- rice grain panicle-1e1
- Direction
- higherinferrede2
- Value
- 3.275 gme2
- Qualifier
- compared with 2.865 and 2.890 gm panicle-1e2
- Comparator
- watering as traditionale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“watering according to 0.75 of traditional + Giza 177 assigned 3.310 gm rice grain panicle-1 compared with 3.055 and 2.685 gm panicle-1 for watering as traditional + Giza177 and watering according Ibrahim equation + Giza177 treatments”
e2“The same means for the same treatments in the second season were 3.275 gm panicle-1 compared with 2.865 and 2.890 gm panicle-1”
Claim · model-written summary
With Egyptian hybrid 1 in the first season, traditional watering gave higher grain weight per panicle (4.385 gm) than 0.75 of traditional (4.025 gm) and Ibrahim-equation watering (3.600 gm).
- Taxon
- RICEOryza sativat0
- Material
- Egyptian hybrid 1e1
- Treatment
- watering according to traditionale1
- Outcome
- rice grain panicle-1e1
- Direction
- higherinferrede1
- Value
- 4.385 gme1
- Qualifier
- compared with 4.025 and 3.600 gm panicle-1e1
- Comparator
- watering as 0.75 of traditionale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“In the first season watering according to traditional + Egyptian hybrid 1 assigned 4.385 gm rice grain panicle-1 compared with 4.025 and 3.600 gm panicle-1 for watering as 0.75 of traditional + Egyptian hybrid 1 and watering according Ibrahim equation + Egyptian hybrid 1 treatments”
Claim · model-written summary
With Egyptian hybrid 1 in the second season, traditional watering gave higher grain weight per panicle (4.540 gm) than 0.75 of traditional (4.165 gm) and Ibrahim-equation watering (3.595 gm).
- Taxon
- RICEOryza sativat0
- Material
- Egyptian hybrid 1e1
- Treatment
- watering according to traditionale1
- Outcome
- rice grain panicle-1e1
- Direction
- higherinferrede2
- Value
- 4.540 gme2
- Qualifier
- compared with 4.165 and 3.595 gm panicle-1e2
- Comparator
- watering as 0.75 of traditionale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“In the first season watering according to traditional + Egyptian hybrid 1 assigned 4.385 gm rice grain panicle-1 compared with 4.025 and 3.600 gm panicle-1 for watering as 0.75 of traditional + Egyptian hybrid 1 and watering according Ibrahim equation + Egyptian hybrid 1 treatments”
e2“The same means for the same treatments in the second season were 4.540 gm panicle-1 compared with 4.165 and 3.595 gm panicle-1”
Claim · model-written summary
Grain/straw ratio was 0.700 for Giza 177 and 0.980 for Egyptian hybrid 1 in the first season, and 0.770 and 0.952 in the second season.
- Taxon
- RICEOryza sativat0
- Material
- Giza 177e4
- Outcome
- Grain /Straw Ratioe4
- Value
- 0.700e4
- Qualifier
- 0.980 for Egyptian hybrid 1 in the first seasone4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e4“Grain /Straw Ratio of variety treatment means were 0.700 for Giza 177 and 0.980 for Egyptian hybrid 1 in the first season and the corresponding values of the second season were 0.770 and 0.952”
Claim · model-written summary
Giza 177 had the lower crop water productivity (0.747 and 0.718 kg/m3).
- Taxon
- RICEOryza sativat0
- Material
- Giza 177e1
- Outcome
- Crop water productivitye1
- Direction
- lowere1
- Value
- 0.747 and 0.718 kg m-3e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“The lower Crop water productivity values ( 0.747 and 0.718 kg m-3 ) were assigned with Giza 177 and the higher values (0.895 and 0.852 kg m-3) were assigned with the latest one ( Egyptian hybrid 1 )”
Claim · model-written summary
Egyptian hybrid 1 had the higher crop water productivity (0.895 and 0.852 kg/m3).
- Taxon
- RICEOryza sativat0
- Material
- Egyptian hybrid 1e1
- Outcome
- Crop water productivitye1
- Direction
- highere1
- Value
- 0.895 and 0.852 kg m-3e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“The lower Crop water productivity values ( 0.747 and 0.718 kg m-3 ) were assigned with Giza 177 and the higher values (0.895 and 0.852 kg m-3) were assigned with the latest one ( Egyptian hybrid 1 )”
Claim · model-written summary
Crop water productivity in the first season was 0.705, 0.850 and 0.908 kg/m3 for traditional, 0.75 of traditional and Ibrahim-equation watering.
- Taxon
- RICEOryza sativat0
- Treatment
- watering according to Ibrahim equatione1
- Outcome
- Crop water productivitye1
- Value
- 0.705, 0.850 and 0.908 kg m-3e1
- Qualifier
- in the first seasone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“Crop water productivity of traditional watering, 0.75 of traditional watering and watering according to Ibrahim equation treatment means were 0.705, 0.850 and 0.908 kg m-3 in the first season”
Claim · model-written summary
Crop water productivity in the second season was 0.703, 0.833 and 0.820 kg/m3 for the same treatments.
- Taxon
- RICEOryza sativat0
- Treatment
- watering according to Ibrahim equatione1
- Outcome
- Crop water productivitye1
- Value
- 0.703, 0.833 and 0820 kg m-3e2
- Qualifier
- in the second seasone2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CROP WATER PRODUCTIVITY Of RICE”
e1“Crop water productivity of traditional watering, 0.75 of traditional watering and watering according to Ibrahim equation treatment means were 0.705, 0.850 and 0.908 kg m-3 in the first season”
e2“Similar values for the same treatments in the same order in the second season were 0.703, 0.833 and 0820 kg m-3”
The same questions in other papers
irrigation · growth · Oryza sativa (rice)Positive and negative results
68 papers in the same direction as this paper · 222 in the opposite direction
- positive
- positive
- positive
287 papers more in this group
See all 291 papers →irrigation · yield · Oryza sativa (rice)Positive and negative results
905 papers in the same direction as this paper · 201 in the opposite direction · 64 reporting no difference from an alternative
- negative
- negative
- negative
1,167 papers more in this group
See all 1,171 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.