Abstract
The objectives of this study were to investigate water saving strategies in the paddy field and to evaluate the performance of some of the newly released rice varieties. Field experiments were conducted at Fanaye in the Senegal River Valley during two rice growing seasons in 2015. Three irrigation regimes ((i) continuous flooding, (ii) trigging irrigation at soil matric potential (SMP) of 30 kPa, (iii) trigging irrigation at SMP of 60 kPa) were tested in an irrigated lowland rice field. Irrigation regimes (ii) and (iii) are alternate wetting and drying (AWD) cycles. Four inbred rice varieties (NERICA S-21, NERICA S-44, Sahel 210 and Sahel 222) and one hybrid rice (Hybrid AR032H) were evaluated under five nitrogen fertilizer rates (0, 50, 100, 150 and 200 kg N ha−1). The results showed that rice yield varied from 0.9 to 12 t ha−1. The maximum yield of 12 t ha−1 was achieved by NERICA S-21 under AWD 30 kPa at 150 kg N ha−1. The AWD irrigation management at 30 kPa resulted in increasing rice yield, rice water use and nitrogen use efficiency and reducing the irrigation applications by 27.3% in comparison with continuous flooding. AWD30 kPa could be adopted as a water saving technology for water productivity under paddy production in the Senegal River Middle Valley. Additional research should be conducted in the upper Valley, where soils are sandier and water is less available, for the sustainability and the adoption of the irrigation water saving practices across the entire Senegal River Valley.
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Claims 5
Claim · model-written summary
Rice yield varied from 0.9 to 12 t ha−1 in the field experiments.
- Taxon
- rice
Oryza sativae1 - Outcome
- rice yielde1
- Value
- 0.9 to 12 t ha−1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the results showed that rice yield varied from 0.9 to 12 t ha−1”
Claim · model-written summary
The maximum rice yield of 12 t ha−1 was achieved by NERICA S-21 under AWD 30 kPa at 150 kg N ha−1.
- Taxon
- riceOryza sativae2
- Material
- NERICA S-21e1
- Treatment
- AWD 30 kPa at 150 kg N ha−1e1
- Outcome
- maximum yielde1
- Value
- 12 t ha−1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The maximum yield of 12 t ha−1 was achieved by NERICA S-21 under AWD 30 kPa at 150 kg N ha−1”
e2“Four inbred rice varieties (NERICA S-21, NERICA S-44, Sahel 210 and Sahel 222)”
Claim · model-written summary
AWD at 30 kPa increased rice yield, rice water use and nitrogen use efficiency compared with continuous flooding.
- Taxon
- riceOryza sativae1
- Treatment
- AWD irrigation management at 30 kPae1
- Outcome
- rice yield, rice water use and nitrogen use efficiencye1
- Direction
- increasinge1
- Comparator
- continuous floodinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The AWD irrigation management at 30 kPa resulted in increasing rice yield, rice water use and nitrogen use efficiency”
e2“in comparison with continuous flooding”
Claim · model-written summary
AWD at 30 kPa reduced irrigation applications by 27.3% compared with continuous flooding.
- Taxon
- riceOryza sativae3
- Treatment
- AWD irrigation management at 30 kPae2
- Outcome
- irrigation applicationse1
- Direction
- reducinge1
- Value
- 27.3%e1
- Comparator
- continuous floodinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“reducing the irrigation applications by 27.3% in comparison with continuous flooding”
e2“The AWD irrigation management at 30 kPa”
e3“Four inbred rice varieties (NERICA S-21, NERICA S-44, Sahel 210 and Sahel 222)”
Claim · model-written summary
AWD at 30 kPa could be adopted as a water-saving technology for paddy production in the Senegal River Middle Valley.
- Taxon
- riceOryza sativae2
- Treatment
- AWD30 kPae1
- Outcome
- could be adopted as a water saving technologye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“AWD30 kPa could be adopted as a water saving technology for water productivity under paddy production”
e2“Four inbred rice varieties (NERICA S-21, NERICA S-44, Sahel 210 and Sahel 222)”
The same questions in other papers
irrigation · physiology: water · Oryza sativa (rice)Positive and negative results
349 papers in the same direction as this paper · 25 in the opposite direction · 5 reporting no difference from an alternative
- positive
- positive
- positive
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