Deficit irrigation: An option to mitigate arsenic load of rice grain in West Bengal, India

Sarkar, S.; Basu, Banga Kamal; Kundu, Champak Kumar; Patra, P. K.

doi:10.1016/j.agee.2011.10.008

Cited by 59 publications

(23 citation statements)

References 17 publications

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“…So we think that the jointing stage and the booting stage are key stages to take measures to reduce As uptake and translocation to shoots and finally As accumulation in rice grains. As uptake in rice A c c e p t e d M a n u s c r i p t 14 can be reduced when rice grows in aerobic conditions instead of in flooding environment, so water management can be used to mitigate As uptake during rice growth ( Li et al 2009;Xu et al 2008;Sarkar et al 2012). Si fertilizer application plays a very important role in decreasing As concentration in rice as result of Si competitive inhibition of arsenite uptake through the shared transporters (Li et al 2009;Guo et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Uptake and Accumulation Characteristics of Arsenic and Iron Plaque in Rice at Different Growth Stages

Li¹,

Zhou

Zhang

et al. 2015

Communications in Soil Science and Plant Analysis

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Arsenic (As) uptake by rice plants and its toxicity to human beings have caused worldwide concerns. Investigating the characteristics of As accumulation in rice in relation to root surface iron plaque during the whole growth of rice would provide important information for devising measures to mitigate rice As uptake in As polluted areas. Uptake and accumulation characteristics of As in rice at different growth stages as well as iron plaque on rice root surfaces were investigated in a pot culture experiment in a greenhouse. The results showed that As concentrations in roots, stems and leaves increased with rice growth，while As concentration in spikelets decreased with grains development. 53.63% of As content in leaves, 61.51% in spikelets and 82.09% in stems were found at both the jointing and booting stages, which suggested that the two stages were the key stages of As uptake. Root surface Iron plaque at different growth stages was extracted by DCB (Dithionite -citrate-bicarbonate). DCB-extractable iron (Fe) and DCB-extractable As significantly increased with rice growth (P<0.001), and there was a significant positive correlation between DCB-extractable Fe and As (P<0.001), indicating that iron plaque was very important to sequestrate As on rice root surfaces.

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Section: Discussionmentioning

confidence: 99%

Uptake and Accumulation Characteristics of Arsenic and Iron Plaque in Rice at Different Growth Stages

Li¹,

Zhou

Zhang

et al. 2015

Communications in Soil Science and Plant Analysis

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“…More specifically, the oxidation of soil by drainage leads to the oxidation of the arsenite to the form of arsenate, which has markedly decreased solubility, plant availability, and toxicity (Takahashi et al 2004). In areas suffering from rice yield reduction caused by As contamination, the cultivation of rice under aerobic conditions has been recommended (Yamane et al 1976;Sarkar et al 2012). On the other hand, soil flooding has a variety of benefits for rice cultivation, such as enhancing the quality and grade of brown rice, weed control, and the prevention of damage by continuous cropping (Kyuma 2004).…”

Section: Discussionmentioning

confidence: 99%

Reduction of the risk of arsenic accumulation in rice by the water management and material application in relation to phosphate status

Matsumoto

Kasuga

Taiki³

et al. 2015

Journal of Plant Interactions

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To reduce the risk of excessive arsenic (As) in rice by using agronomic methods applicable to common farming in uncontaminated soil with As, we examined the effect of different start periods of drainage after heading and the application of iron (Fe) or silicate (Si) materials in concrete frames filled with soil collected from an area surrounding a former As-polluted region. The concentration of As in the grain decreased with the early start of drainage, whereas the cadmium (Cd) concentration increased. Thus, maintaining the oxidative condition after heading significantly decreases the concentration of As in the grain. Fe material application significantly decreased the concentration of As in the grain compared to the control. The phosphorus (P) concentration ratio of grain to straw (which we regarded as the P distribution rate of grain and straw) was significantly lower with the delay of the start of drainage. Similar results were obtained in the solution culture experiment in which the P level was decreased by half in the culture solution. A negative correlation between the P concentration ratio of grain to straw and the concentration of As in the grain was observed, indicating that an increase in the P translocation rate from straw to grain would inhibit the accumulation of As in the grain due to the competition of P and As. Further evaluations of the effects of Fe, Si, and P on water management and fertilization are needed to reduce the risk of As accumulation in rice grain.

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“…It has been reported that growing rice in a deficit irrigation environment reduces As uptake in various parts of plants, whereas a practical water management of the system must not significantly reduce grain yield (Sarkar et al, 2012). A management practice widely adopted for irrigated lowland rice, AWDI has been proven to reduce water consumption and greenhouse gas emissions while maintaining yields (Seckler, 1996; van de Hoek et al, 2001; Richards and Sander, 2014).…”

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confidence: 99%

Irrigation Practices on Rice Crop Production in Arsenic‐Rich Paddy Soil

et al. 2016

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Irrigation and water management are important cultivation practices, controlling rice crop production and regulating As concentration in both paddy fields and rice plants (Oryza sativa L.). This study investigated the impacts of various types of irrigation practices with As‐contaminated groundwater on the extent of arsenic accumulation within rice plant parts during development and rice crop production at maturity. Three types of irrigation practices were applied to As‐rich paddy fields: flooded irrigation, aerobic irrigation, and alternate wetting and drying irrigation (AWDI). The arsenic accumulation in various plant parts was monitored at 40, 54, 68, 82, 96, and 110 d after transplanting in the first (with ‘Tainong 84’) and the second (with ‘Tainan 11’) cropping seasons of 2013. Results show that the arsenic concentration in different parts of rice plants varied with growth stage and irrigation practices in both cropping seasons. There was a seasonal fluctuation of arsenic concentration within rice plants during plant development with flooded irrigation, which had the largest amount of irrigation input. Lower levels of As in rice were found in AWDI and aerobic irrigation than in flooded irrigation. Different irrigation practices can change the oxidation and reduction conditions of the paddy field, which lead to As release or absorption in the soil, thus influencing the uptake of As by plants.

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Deficit irrigation: An option to mitigate arsenic load of rice grain in West Bengal, India

Cited by 59 publications

References 17 publications

Uptake and Accumulation Characteristics of Arsenic and Iron Plaque in Rice at Different Growth Stages

Uptake and Accumulation Characteristics of Arsenic and Iron Plaque in Rice at Different Growth Stages

Reduction of the risk of arsenic accumulation in rice by the water management and material application in relation to phosphate status

Irrigation Practices on Rice Crop Production in Arsenic‐Rich Paddy Soil

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