Abstract
Abstract: Improving the yield of rice (Oryza sativa L) in existing irrigated areas rather than further expansion is more likely to be the main source of growth for the crop in Kenya, especially due to limited land and water resources. In order to achieve this, there is need to identify and adopt solutions that are environmentally more sustainable. That is, the production systems adopted should reduce water consumption and increase productivity. A study was carried out to evaluate whether the System of Rice Intensification (SRI) could increase water productivity and crop yield relative to the conventional production system of continuous flooding. The effects of SRI on total water use, growth characteristics and yield of three rice varieties were investigated at Mwea Irrigation Scheme of Kenya on vertic clay soils. The production practices of SRI were found to be beneficial to rice growth and yield. SRI gave higher average grain yield (14.85 t/ha) than the conventional flooded system (8.66 t/ha) at P=0.006, while the average yield across production systems was 15.89 t/ha, 11.26 t/ha and 8.10 t/ha for BW196, NERICA1 and Basmati370 varieties respectively, with P<0.001. There was a 24% saving in irrigation water by SRI, while land productivity (LP) and water productivity (WP) increased by 71% and 90% respectively compared to the conventional flooded system. Overall, SRI production system gave better yield and productivity results than the conventional flooded system. This was probably as a result of better phenotypic expressions due to the innovative soil-water-crop management practices of SRI that change the environment where rice is grown.
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Claims 9
Claim · model-written summary
SRI gave higher average rice grain yield than the conventional flooded system at Mwea Irrigation Scheme.
- Taxon
- rice (Oryza sativa L)
Oryza sativae0 - Treatment
- SRIe1
- Outcome
- grain yielde1
- Direction
- highere1
- Value
- 14.85 t/hae1
- Qualifier
- 8.66 t/hae1
- Comparator
- conventional flooded systeme1
- Setting
- Mwea Irrigation Scheme of Kenyae6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e1“SRI gave higher average grain yield (14.85 t/ha) than the conventional flooded system (8.66 t/ha) at P=0.006”
e6“Mwea Irrigation Scheme of Kenya”
Claim · model-written summary
Rice variety BW196 averaged 15.89 t/ha yield across production systems.
- Taxon
- rice (Oryza sativa L)Oryza sativae0
- Material
- BW196e2
- Outcome
- average yield across production systemse2
- Value
- 15.89 t/hae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e2“the average yield across production systems was 15.89 t/ha, 11.26 t/ha and 8.10 t/ha for BW196, NERICA1 and Basmati370 varieties respectively, with P<0.001”
Claim · model-written summary
Rice variety NERICA1 averaged 11.26 t/ha yield across production systems.
- Taxon
- rice (Oryza sativa L)Oryza sativae0
- Material
- NERICA1e2
- Outcome
- average yield across production systemse2
- Value
- 11.26 t/hae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e2“the average yield across production systems was 15.89 t/ha, 11.26 t/ha and 8.10 t/ha for BW196, NERICA1 and Basmati370 varieties respectively, with P<0.001”
Claim · model-written summary
Rice variety Basmati370 averaged 8.10 t/ha yield across production systems.
- Taxon
- rice (Oryza sativa L)Oryza sativae0
- Material
- Basmati370e2
- Outcome
- average yield across production systemse2
- Value
- 8.10 t/hae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e2“the average yield across production systems was 15.89 t/ha, 11.26 t/ha and 8.10 t/ha for BW196, NERICA1 and Basmati370 varieties respectively, with P<0.001”
Claim · model-written summary
SRI saved 24% of irrigation water compared with the conventional flooded system.
- Taxon
- rice (Oryza sativa L)Oryza sativae0
- Treatment
- SRIe3
- Outcome
- irrigation watere3
- Direction
- decreaseinferrede3
- Value
- 24%e3
- Comparator
- conventional flooded systeme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e3“There was a 24% saving in irrigation water by SRI, while land productivity (LP) and water productivity (WP) increased by 71% and 90% respectively compared to the conventional flooded system”
Claim · model-written summary
SRI increased land productivity by 71% compared with the conventional flooded system.
- Taxon
- rice (Oryza sativa L)Oryza sativae0
- Treatment
- SRIe3
- Outcome
- land productivity (LP)e3
- Direction
- increasede3
- Value
- 71%e3
- Comparator
- conventional flooded systeme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e3“There was a 24% saving in irrigation water by SRI, while land productivity (LP) and water productivity (WP) increased by 71% and 90% respectively compared to the conventional flooded system”
Claim · model-written summary
SRI increased water productivity by 90% compared with the conventional flooded system.
- Taxon
- rice (Oryza sativa L)Oryza sativae0
- Treatment
- SRIe3
- Outcome
- water productivity (WP)e3
- Direction
- increasede3
- Value
- 90%e3
- Comparator
- conventional flooded systeme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e3“There was a 24% saving in irrigation water by SRI, while land productivity (LP) and water productivity (WP) increased by 71% and 90% respectively compared to the conventional flooded system”
Claim · model-written summary
The production practices of SRI were beneficial to rice growth and yield.
- Taxon
- rice (Oryza sativa L)Oryza sativae0
- Treatment
- production practices of SRIe4
- Outcome
- rice growth and yielde4
- Direction
- beneficiale4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e4“The production practices of SRI were found to be beneficial to rice growth and yield”
Claim · model-written summary
The yield gain under SRI is probably due to better phenotypic expression from its soil-water-crop management practices.
- Taxon
- rice (Oryza sativa L)Oryza sativae0
- Outcome
- better yield and productivity resultse7
- Qualifier
- better phenotypic expressions due to the innovative soil-water-crop management practices of SRIe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improving the yield of rice (Oryza sativa L) in existing irrigated areas”
e5“This was probably as a result of better phenotypic expressions due to the innovative soil-water-crop management practices of SRI”
e7“Overall, SRI production system gave better yield and productivity results than the conventional flooded system”
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irrigation · physiology: water · Oryza sativa (rice)Positive and negative results
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- no effect
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- positive
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905 papers in the same direction as this paper · 201 in the opposite direction · 64 reporting no difference from an alternative
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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.