Influence of subsurface drainage on the productivity of poorly drained paddy fields

Darzi‐Naftchali, Abdullah; Shahnazari, Ali

doi:10.1016/j.eja.2014.02.003

Cited by 43 publications

(21 citation statements)

References 32 publications

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“…Moreover, improvement of soil structure and more yield after the operation will be followed by a rise in the economic level. An economic analysis showed that the cost of installing subsurface drainage systems was readily justified by annual increased rice and canola yields [9]. Also, quantifying the influence of these treatments on the salinity of drainage water indicated that by increasing drain spacing, the electrical conductivity (EC) and total salt load decreased [39].…”

Section: Long-term Effects Of Subsurface Drainage Systems On Canola Ymentioning

confidence: 99%

“…In the sloping paddy fields of the Philippines, this increased crop yield and the overall economic productivity of the soil [3]. In Northern Iran, evaluation of influences of subsurface drainage systems showed positive effects on rice yields and rice water management [9,16], and cost of the installation was justified after one year [9].…”

Section: Introductionmentioning

confidence: 99%

“…In different countries, installation of subsurface drainage in paddy fields caused increases in yield and facilitated working conditions on the land [7][8][9][10][11][12]. In the late 1980s, the Japanese government encouraged the use of subsurface drainage for sustainable farming of paddy fields.…”

Section: Introductionmentioning

confidence: 99%

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Subsurface Drainage to Enable the Cultivation of Winter Crops in Consolidated Paddy Fields in Northern Iran

et al. 2016

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Subsurface drainage is a prerequisite to grow winter crops in the consolidated paddy fields in Northern Iran. A four-year study (2011)(2012)(2013)(2014)(2015) was conducted to quantify the effects of subsurface drainage on the saturated hydraulic conductivity, water table, drain discharge and winter crop yields. Subsurface drainage systems with two drain depths of 0.65 and 0.90 m and two drain spacings of 15 and 30 m were installed at the consolidated paddy fields of Sari Agricultural Sciences and Natural Resources University, Iran. During four successive winter seasons, the water table depth and drain discharge were measured daily. Soil saturated hydraulic conductivity was measured twice; before drainage system installation and four years following the installation. Canola grain yields were determined at harvest of each cultivation season. During the study period, the soil saturated hydraulic conductivity increased with the highest increase in the top 0-30 cm. The deeper drains were more effective in controlling the water table compared to the shallow, and the daily drain discharge of the deeper drains in the fourth year were higher than those of shallow drains. The canola grain yield of all drainage systems increased significantly by the seasons, and the largest difference in canola grain yield between first and fourth seasons was 2191 kg¨ha´1 (318% increase) in the fields with 0.90 m drain depth and 30 m drain spacing. Totally, it became clear that installation of subsurface drainage systems with 0.90 m depth and 30 m spacing in the paddy fields of Northern Iran can be recommended to achieve high yield of winter crop, soil condition improvement, and multi-purpose land use.

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Section: Long-term Effects Of Subsurface Drainage Systems On Canola Ymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Subsurface Drainage to Enable the Cultivation of Winter Crops in Consolidated Paddy Fields in Northern Iran

et al. 2016

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“…Jafari-Talukolaee et al 2015;Bezborodova et al 2010;Amezketa 2006;Christen and Skehan 2001). Unfortunately, subsurface drainage system installation costs have also increased, especially for farmers in developing countries (Darzi-Naftchali and Shahnazari 2014). It is therefore not strange that more than 70% of the total irrigated 14 Page 2 of 5 lands in the developing countries still rely on natural drainage to manage both the soil salinity and shallow water table problems (Benyamini et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Matching soil salinization and cropping systems in communally managed irrigation schemes

Malota

Mchenga

2018

Appl Water Sci

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Occurrence of soil salinization in irrigation schemes can be a good indicator to introduce high salt tolerant crops in irrigation schemes. This study assessed the level of soil salinization in a communally managed 233 ha Nkhate irrigation scheme in the Lower Shire Valley region of Malawi. Soil samples were collected within the 0-0.4 m soil depth from eight randomly selected irrigation blocks. Irrigation water samples were also collected from five randomly selected locations along the Nkhate River which supplies irrigation water to the scheme. Salinity of both the soil and the irrigation water samples was determined using an electrical conductivity (EC) meter. Analysis of the results indicated that even for very low salinity tolerant crops (EC i < 2 dS/m), the irrigation water was suitable for irrigation purposes. However, root-zone soil salinity profiles depicted that leaching of salts was not adequate and that the leaching requirement for the scheme needs to be relooked and always be adhered to during irrigation operation. The study concluded that the crop system at the scheme needs to be adjusted to match with prevailing soil and irrigation water salinity levels.

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“…The positive effects of drying paddy fields during non-stress periods of the rice growing season were demonstrated in multiple studies (Goto et al, 2000;Liu et al, 2013;Darzi-Naftchali and Shahnazari, 2014). Midseason drainage (MSD) is a water management practice that is traditionally carried out during the maximum tillering stage of rice to control non-productive tillers and to consequently increase rice production.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of soil water dynamics in subsurface drained paddies with midseason drainage or alternate wetting and drying management

Darzi‐Naftchali

Karandish

Šimůnek

2018

Agricultural Water Management

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Influence of subsurface drainage on the productivity of poorly drained paddy fields

Cited by 43 publications

References 32 publications

Subsurface Drainage to Enable the Cultivation of Winter Crops in Consolidated Paddy Fields in Northern Iran

Subsurface Drainage to Enable the Cultivation of Winter Crops in Consolidated Paddy Fields in Northern Iran

Matching soil salinization and cropping systems in communally managed irrigation schemes

Numerical modeling of soil water dynamics in subsurface drained paddies with midseason drainage or alternate wetting and drying management

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