Salinity intrusion reduces grain yield in coastal paddy fields: case study in two estuaries in the Red River Delta, Vietnam

Phan, Luyen T. H.; Kamoshita, Akihiko

doi:10.1007/s10333-020-00790-y

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…The results of this section are consistent with the findings of Clermont-Dauphin et al 2010 To determine the "biological" or biomass yield of the two treatments, at the end of the growth period, plant samples were harvested in both NSW and HSW treatments. The amount of dry matter in NSW treatment was calculated to be 1.920 kg and HSW treatment was calculated to be 1.835 kg (Table 4) which is consistent with the results of the Ministry of Agriculture-Jihad (Ahmadi et al, 2019) and Phan & Kamoshita (2020). However, a small decrease in this amount (about 4.5%) in HSW treatment can be attributed to the climatic and environmental conditions of this test site compared to paddy fields in the north of Iran.…”

Section: Grain Yield and Harvest Indexsupporting

confidence: 87%

“…One of the ways to deal with the shortage of irrigation water resources is to use low-depth water table to irrigate the plant, especially in areas with groundwater close to the soil surface; however, the rise of salt to the root zone due to capillary flow is a limiting factor for the use of shallow groundwater for irrigation (Zarei et al, 2010;Carracelas et al, 2019;Phan & Kamoshita, 2020). Clermont-Dauphin et al (2010) examined the yield of rice in saline water and soil conditions in Thailand.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the Yield and Yield Components of Rice in Areas With Shallow Water Table and Saline

Amiji¹,

Liaghat²,

Ghameshlou³

et al. 2020

Big.data.Agr

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Since rice is one of the most important strategic plants for the country's economy and the people of the north of Iran regions. On the other hand, the problem of soil salinity in some paddy fields there is in the Caspian Sea region due to being located in areas with the saline water table at a very low depth. Therefore, it is necessary to study the possibility of rice production in the presence of shallow water table and saline; because soil salinity in the coastal areas of Mazandaran province in the north of Iran is a big problem that threatens the cultivation of rice in this region. Research was conducted in 2018 using large lysimeter at the Climate Research Center of Agricultural and Natural Resources College of the University of Tehran. The present study was performed in an insulated metal lysimeter under two main treatments with non-saline water (NSW) and high saline water (HSW), both in the presence of a shallow water table. The irrigation water salinity was equal to 0.94 dS m-1 for both treatments, and the shallow water table salinity at a depth of 40 cm below the soil surface for HSW treatment was adjusted to 20 dS m-1 as artificial feeding. The results of comparing the average yield parameters showed that the shallow static surface salinity on leaf area index (LAI), root length (RL), plant height (PH), membrane stability index (MSI), chlorophyll (SPAD), relative water content (RWC) and biomass (BIO) parameters did not have a significant effect on the two treatments and caused a small difference between the yield parameters. The difference between the rice yield parameters of the control treatment and the salinity treatment was about 1 to 12 percent. Meanwhile, grain and biological yield in HSW treatment compared to NSW decreased by 3.2% and 4.5%, respectively. Also, the harvest index in the two treatments NSW and HSW was almost equal and was calculated to be 57.55% and 58.31%, respectively. Therefore, according to the result of this study, it can be find that there is exploring the possibility of cultivation and production of rice in the presence of shallow water table and saline.

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Section: Grain Yield and Harvest Indexsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Investigation of the Yield and Yield Components of Rice in Areas With Shallow Water Table and Saline

Amiji¹,

Liaghat²,

Ghameshlou³

et al. 2020

Big.data.Agr

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“…Therefore, in order to farm rice in those regions, farmers there converted from intensive rice farming to a rice-shrimp model to make use of rainwater for rice and to raise shrimp during the dry season [3]. This practice has had a negative impact on rice cultivation in coastal paddy fields [4]. Nevertheless, soil in Thanh Phu, Vietnam has been detected to be contaminated by acid sulfate matter with higher concentrations of H + , Al 3+ , Fe 2+, and Mn 2+ .…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-Fixing Purple Nonsulfur Bacteria Originating from Acid Saline Soils of a Rice-Shrimp Farm

Anh,

Xuan,

Xuan

et al. 2024

Indonesian J. Agric. Res

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The study was conducted to (i) isolate, select, and identify strains of purple nonsulfur bacteria (PNSB), which can fix nitrogen (N), from soil and water in a rice-shrimp integrated system, (ii) to determine the capacity of the selected potent PNSB strains in producing plant growth promoting substances. The isolation resulted in 57 pure PNSB strains from 36 soil samples and 36 water samples of rice-shrimp paddy fields in Thanh Phu - Ben Tre. Among them, 49 strains survived under pH 5.0 conditions, 24 of which grew well under microaerobic light (ML) and aerobic dark (AD) conditions in a basic isolation medium (BIM) containing NaCl 5‰. Two strains (S01 and S06) with the greatest N fixation were identified by 16S rRNA techniques as Rhodobacter sphaeroides. Their N production was 16.9 mg L-1 under the ML condition and 32.1 mg L-1 under the AD condition. Moreover, two R. sphaeroides S01 and S06 strains performed P solubilization at 0.382-2.954 mg L-1 from Al-P, 3.81-4.28 mg L-1 from Fe-P, and 3.87-4.74 mg L-1 from Ca-P, and production of plant growth promoting substances, such as IAA (12.3-15.5 mg L-1), EPS (1.09-1.58 mg L-1), siderophores (10.7-53.6%) and ALA (1.68-2.82 mg L-1) under both the incubating conditions.

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Effects of soil salinity on rice production and technical efficiency: Evidence from the northern coastal region of Central Java, Indonesia

Oelviani,

Adiyoga,

Suhendrata

et al. 2024

Case Studies in Chemical and Environmental Engineering

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Salinity intrusion reduces grain yield in coastal paddy fields: case study in two estuaries in the Red River Delta, Vietnam

Cited by 6 publications

References 25 publications

Investigation of the Yield and Yield Components of Rice in Areas With Shallow Water Table and Saline

Investigation of the Yield and Yield Components of Rice in Areas With Shallow Water Table and Saline

Nitrogen-Fixing Purple Nonsulfur Bacteria Originating from Acid Saline Soils of a Rice-Shrimp Farm

Effects of soil salinity on rice production and technical efficiency: Evidence from the northern coastal region of Central Java, Indonesia

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