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 -1 ) than the conventional flooded system (8.66 t ha -1 ) at P=0.006, while the average yield across production systems was 15.89 t ha -1 , 11.26 t ha -1 and 8.10 t ha -1 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 8
Claim · model-written summary
SRI benefited rice growth.
- Taxon
- rice
Oryza sativat0 - Treatment
- SRIe0
- Outcome
- rice growthe0
- Direction
- beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The production practices of SRI were found to be beneficial to rice growth and yield”
t0“rice cultivation”
Claim · model-written summary
SRI grain yield was 14.85 t ha -1 versus 8.66 t ha -1 under conventional flooding.
- Taxon
- riceOryza sativat0
- Treatment
- SRIe0
- Outcome
- average grain yielde0
- Direction
- highere0
- Value
- 14.85 t ha -1e0
- Qualifier
- 8.66 t ha -1e0
- Comparator
- conventional flooded systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SRI gave higher average grain yield (14.85 t ha -1 ) than the conventional flooded system (8.66 t ha -1 ) at P=0.006”
t0“rice cultivation”
Claim · model-written summary
BW196 had average yield of 15.89 t ha -1 across production systems.
- Taxon
- riceOryza sativat0
- Material
- BW196e0
- Outcome
- average yielde0
- Value
- 15.89 t ha -1e0
- Qualifier
- across production systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“average yield across production systems was 15.89 t ha -1 , 11.26 t ha -1 and 8.10 t ha -1 for BW196, NERICA1 and Basmati370 varieties respectively, with P<0.001”
t0“rice cultivation”
Claim · model-written summary
NERICA1 had average yield of 11.26 t ha -1 across production systems.
- Taxon
- riceOryza sativat0
- Material
- NERICA1e0
- Outcome
- average yielde0
- Value
- 11.26 t ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“average yield across production systems was 15.89 t ha -1 , 11.26 t ha -1 and 8.10 t ha -1 for BW196, NERICA1 and Basmati370 varieties respectively, with P<0.001”
t0“rice cultivation”
Claim · model-written summary
Basmati370 had average yield of 8.10 t ha -1 across production systems.
- Taxon
- riceOryza sativat0
- Material
- Basmati370e0
- Outcome
- average yielde0
- Value
- 8.10 t ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“average yield across production systems was 15.89 t ha -1 , 11.26 t ha -1 and 8.10 t ha -1 for BW196, NERICA1 and Basmati370 varieties respectively, with P<0.001”
t0“rice cultivation”
Claim · model-written summary
SRI saved 24% of irrigation water.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a 24% saving in irrigation water by SRI”
t0“rice cultivation”
Claim · model-written summary
SRI increased land productivity by 71% compared with conventional flooding.
- Taxon
- riceOryza sativat0
- Treatment
- SRIe1
- Outcome
- land productivitye0
- Direction
- increasede0
- Value
- 71%e0
- Comparator
- conventional flooded systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“land productivity (LP) and water productivity (WP) increased by 71% and 90% respectively compared to the conventional flooded system”
t0“rice cultivation”
e1“SRI production system”
Claim · model-written summary
SRI increased water productivity by 90% compared with conventional flooding.
- Taxon
- riceOryza sativat0
- Treatment
- SRIe1
- Outcome
- water productivitye0
- Direction
- increasede0
- Value
- 90%e0
- Comparator
- conventional flooded systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“land productivity (LP) and water productivity (WP) increased by 71% and 90% respectively compared to the conventional flooded system”
t0“rice cultivation”
e1“SRI production system”
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