Food security and climate-smart agriculture in the lower Mekong basin of Southeast Asia: evaluating impacts of system of rice intensification with special reference to rainfed agriculture

Mishra, Abha; Ketelaar, Jan Willem; Uphoff, Norman; Whitten, Max

doi:10.1080/14735903.2020.1866852

Cited by 45 publications

(23 citation statements)

References 27 publications

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“…The parameter also indicates that adopting SRI in rice cultivation could increase the rice yield of farm households by about 15.1%. This result is in line with the studies of Varma (2019), Kadigi et al (2020), Mishra et al (2021), and Barrett et al (2022), who found that SRI adoption could increase rice yields through an estimated econometric model.…”

Section: The Impact Of Sri Adoption On Rice Yieldssupporting

confidence: 92%

Determinants of System of Rice Intensification Adoption and its Impacts on Rice Yield in the Upland Region of Central Vietnam

Nguyen

Hung

2022

5005

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The System of Rice Intensification (SRI) is an eco-friendly approach that aims to increase rice yield, reduce required inputs, and improve rural households' income without burdening the environment. This paper investigates the factors that influence the adoption of the SRI practice in rice production and the impact of the SRI adoption on rice yields in the upland region of Central Vietnam. Utilizing the stratified random sampling method, 239 rice farmers in Quang Nam and Thua Thien Hue provinces were selected for the study. Our study employed the logit model to identify the determinants of SRI adoption and found that the age of respondents had a significant and negative effect on the adoption of SRI. In contrast, the amount of family labor, number of plots, and access to credit had significant positive effects on farmers’ decision to adopt SRI. In addition, the results showed that when rice farmers adopted SRI, their yields increased by 15.1% on average. Regarding the policy implications, the results suggest a need for a coordinated policy between the Vietnamese government and farmers to support the implementation of the SRI method in mountainous areas, especially to train farmers to use the SRI technique.

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Section: The Impact Of Sri Adoption On Rice Yieldssupporting

confidence: 92%

Determinants of System of Rice Intensification Adoption and its Impacts on Rice Yield in the Upland Region of Central Vietnam

Nguyen

Hung

2022

5005

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“…Thailand and Vietnam are among the largest rice exporters in the world [15][16][17]. Nevertheless, there is still widespread poverty in the lower LMB, with millions of poor people facing severe food security risks [18]. The level of agricultural productivity in these countries is not high, and the ability to cope with the negative impact of climate change on food production is limited.…”

Section: Introductionmentioning

confidence: 99%

Projection of Rainfed Rice Yield Using CMIP6 in the Lower Lancang–Mekong River Basin

et al. 2023

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Climate change has had a strong impact on grain production in the Lower Lancang–Mekong River Basin (LMB). Studies have explored the response of LMB rice yield to climate change, but most of them were based on climate projection data before CMIP6 (Coupled Model Intercomparison Project Phase 6). Based on the latest CMIP6 climate projection data and considering three emission scenarios (SSP1-2.6, SSP2-4.5, and SSP5-8.5), this study used the crop growth model (AquaCrop) to simulate and project the LMB rice yield and analyzed the correlation between the yield and the temperature and precipitation during the growth period. The results show that the output of rice yield will increase in the future, with greater yield increases in the SSP5-8.5 scenario (about 35%) than in the SSP2-4.5 (about 15.8%) and SSP1-2.6 (about 9.3%) scenarios. The average temperature of the rice growth period will increase by 1.6 °C, 2.4 °C, and 3.7 °C under the SSP1-2.6, SSP2-4.5, and SSP5-8.5 scenarios, respectively. The rice yield was predicted to have a significant positive response to the increase in temperature in the near future (2021–2060). In the far future (2061–2100), the rice yield will continue this positive response under the high-emission scenario (SSP5-8.5) with increasing temperature, while the rice yield under the low-emission scenario (SSP1-2.6) would be negatively correlated with the temperature. There will be a small increase in precipitation during the rice growth period of LMB in the future, but the impact of the precipitation on the rice yield is not obvious. The correlation between the two is not high, and the impact of the precipitation on the yield is more uncertain. This result is valuable for the management of the rice cultivation and irrigation system in the LMB, and it will help the government to adapt the impact of climate change on the rice production, which may contribute to the food security of the LMB under climate change.

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“…Indeed, for much of the 20th century the term “food security” was regarded as almost synonymous with rice production in the region. However, changing climate and socio‐political conditions are increasingly undermining the viability of these approaches (Lebot, 2013; Mishra et al, 2021). Coastal areas in SE Asia in particular are facing multiple challenges linked to climate change, all of which have implications for food production.…”

Section: Introductionmentioning

confidence: 99%

Environmental and farming practice controls of productivity of Cyrtosperma merkusii (giant swamp taro), an underutilised wetland and potential paludiculture crop

Mendiondo,

Moko,

Sparkes

et al. 2023

Food and Energy Security

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Growing recognition of the potential vulnerabilities of major crop systems has spurred a growing interest in the potential of alternative crops which may be resilient to climate change and also help mitigate its effects. In Indonesia, such issues are particularly pertinent given that country's particular vulnerability to climate change impacts high dependence on agricultural livelihoods and varied topographies and growing conditions. Cyrtosperma merkusii (giant swamp taro) is a wetland plant which has historically formed part of food systems in the eastern Pacific. The plant has the potential to be cultivated as a source of starch on marginal coastal land and on peatlands with high water tables. The aim of this paper was therefore to determine site conditions that promote growth of C. merkusii and the macro and micronutrient status of the corms. Naturally, the size of the plants varied substantially among sites, with a neutral pH, and low redox and conductivity being strong edaphic predictors of corm size. Despite substantial differences in the soil properties of the different study sites, there were no significant differences in the macro and micronutrient content of the corms. Field trials showed that although the plants grew under dry land conditions, the plants grew bigger and yielded corms with greater concentrations of Fe, Mn and K under waterlogged conditions, indicating that a high‐water table is the best cultivation environment for C. merkusii. The nutrient content of the corms suggests that, although primarily a starch crop, C. merkusii could also increase the intake of Fe in populations where Fe deficiency is pervasive. We conclude that the wetland plant C. merkusii has considerable potential as a paludiculture crop in low‐lying areas of SE Asia as it was tolerant of a wide range of soil conditions and performed well when cultivated under waterlogged conditions without additional fertilisation.

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Food security and climate-smart agriculture in the lower Mekong basin of Southeast Asia: evaluating impacts of system of rice intensification with special reference to rainfed agriculture

Cited by 45 publications

References 27 publications

Determinants of System of Rice Intensification Adoption and its Impacts on Rice Yield in the Upland Region of Central Vietnam

Determinants of System of Rice Intensification Adoption and its Impacts on Rice Yield in the Upland Region of Central Vietnam

Projection of Rainfed Rice Yield Using CMIP6 in the Lower Lancang–Mekong River Basin

Environmental and farming practice controls of productivity of Cyrtosperma merkusii (giant swamp taro), an underutilised wetland and potential paludiculture crop

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