Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda
Drainage management is important in intensification of irrigated paddy rice production. This study assessed the effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a field experiment conducted during three seasons in Rwanda. The experiment comprised 12 plots wi...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-10-01
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| Series: | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
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| Online Access: | http://dx.doi.org/10.1080/09064710.2020.1817539 |
| _version_ | 1827817021018996736 |
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| author | Olive Tuyishime Abraham Joel Ingmar Messing Francois Naramabuye Muthiah Sankaranarayanan Ingrid Wesström |
| author_facet | Olive Tuyishime Abraham Joel Ingmar Messing Francois Naramabuye Muthiah Sankaranarayanan Ingrid Wesström |
| author_sort | Olive Tuyishime |
| collection | DOAJ |
| description | Drainage management is important in intensification of irrigated paddy rice production. This study assessed the effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a field experiment conducted during three seasons in Rwanda. The experiment comprised 12 plots with four blocks and three treatments: DS0.6 (0.6 m deep drain), DD11.2 (1.2 m deep drain, control structure open four times per week), and DD21.2 (1.2 m deep drain, control structure open two times per week). Outflow was calculated from water balance. Nitrogen (N) content in drainage water was determined weekly. Crop yield and N uptake were determined in grain and straw. In all seasons, grain yield was 61–131% higher, crop N uptake was 24–90% higher, harvest index (HI) was 24–65% higher and water use efficiency (WUE) was 50–150% higher in treatments DD11.2 and DD21.2 than in DS0.6. There was a decrease in soil carbon/nitrogen ratio at the end of Seasons 2 and 3. Recirculating straw to fields is thus necessary to replenish SOC for long-term soil fertility. A practical implication of the study is that managed deep drainage systems could enhance water use efficiency and rice grain yield in poorly drained paddy fields. |
| first_indexed | 2024-03-12T00:28:33Z |
| format | Article |
| id | doaj.art-c77a7f7448c644ab8fbb357bc8030807 |
| institution | Directory Open Access Journal |
| issn | 0906-4710 1651-1913 |
| language | English |
| last_indexed | 2024-03-12T00:28:33Z |
| publishDate | 2020-10-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| spelling | doaj.art-c77a7f7448c644ab8fbb357bc80308072023-09-15T10:26:26ZengTaylor & Francis GroupActa Agriculturae Scandinavica. Section B, Soil and Plant Science0906-47101651-19132020-10-0170757859310.1080/09064710.2020.18175391817539Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in RwandaOlive Tuyishime0Abraham Joel1Ingmar Messing2Francois Naramabuye3Muthiah Sankaranarayanan4Ingrid Wesström5University of Rwanda, College of Agriculture, Animal Sciences and Veterinary MedicineDepartment of Soil and Environment, Swedish University of Agricultural SciencesDepartment of Soil and Environment, Swedish University of Agricultural SciencesUniversity of Rwanda, College of Agriculture, Animal Sciences and Veterinary MedicineUniversity of Rwanda, College of Agriculture, Animal Sciences and Veterinary MedicineDepartment of Soil and Environment, Swedish University of Agricultural SciencesDrainage management is important in intensification of irrigated paddy rice production. This study assessed the effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a field experiment conducted during three seasons in Rwanda. The experiment comprised 12 plots with four blocks and three treatments: DS0.6 (0.6 m deep drain), DD11.2 (1.2 m deep drain, control structure open four times per week), and DD21.2 (1.2 m deep drain, control structure open two times per week). Outflow was calculated from water balance. Nitrogen (N) content in drainage water was determined weekly. Crop yield and N uptake were determined in grain and straw. In all seasons, grain yield was 61–131% higher, crop N uptake was 24–90% higher, harvest index (HI) was 24–65% higher and water use efficiency (WUE) was 50–150% higher in treatments DD11.2 and DD21.2 than in DS0.6. There was a decrease in soil carbon/nitrogen ratio at the end of Seasons 2 and 3. Recirculating straw to fields is thus necessary to replenish SOC for long-term soil fertility. A practical implication of the study is that managed deep drainage systems could enhance water use efficiency and rice grain yield in poorly drained paddy fields.http://dx.doi.org/10.1080/09064710.2020.1817539surface drainagepaddy ricenutrient lossesrice yieldharvest index |
| spellingShingle | Olive Tuyishime Abraham Joel Ingmar Messing Francois Naramabuye Muthiah Sankaranarayanan Ingrid Wesström Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda Acta Agriculturae Scandinavica. Section B, Soil and Plant Science surface drainage paddy rice nutrient losses rice yield harvest index |
| title | Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda |
| title_full | Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda |
| title_fullStr | Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda |
| title_full_unstemmed | Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda |
| title_short | Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda |
| title_sort | effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi arid marshland in rwanda |
| topic | surface drainage paddy rice nutrient losses rice yield harvest index |
| url | http://dx.doi.org/10.1080/09064710.2020.1817539 |
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