Rice Green Revolution and Climatic Change in East Africa: An Approach from the  Technical Efficiency of Rainfed Rice Farmers in Uganda

Maruyama, Atsushi; Haneishi, Yusuke; Okello, Stella E.; Asea, Godfrey; Tsuboi, Tatsushi; Takagaki, Michiko; Kikuchi, Masao

doi:10.4236/as.2014.54035

Cited by 7 publications

(3 citation statements)

References 23 publications

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“…In 3.1, low WUE in South East China, South, and South East Asian countries, such as India, Philippines, and Vietnam, several provinces with high rice WUE are mainly located in the northern part of China. Geographically, the WUE situation can be influenced by different climatic factors, such as rainfall and temperature, and it also shows that rice is vulnerable to climate change, which is the uncertainty of future climate change (Aven & Renn, 2015; Barnwal & Kotani, 2013; Buytaert et al, 2010; Maruyama et al, 2014). In the study of global status rice WUE, we found that flood irrigation is still routinely used in most countries today, which requires a certain amount of rainfall as well as irrigation.…”

Section: Discussionmentioning

confidence: 99%

Current status of global rice water use efficiency and water‐saving irrigation technology recommendations

Haonan,

Jie,

Shihong

et al. 2023

J Agronomy Crop Science

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Rice has a high water requirement, but water use efficiency (WUE) in rice has always been low, and the status of rice WUE and the factors influencing it in various countries around the world is currently unclear. Therefore, this paper collected 56 articles from 2000 to 2022, through which WUE data from different countries and different provinces in China were collated, and the effects of various water‐saving irrigation technologies on WUE of rice and irrigation water use were analysed using the method of Meta‐analysis. The results of this paper show that rice WUE is low in most countries, with the lowest WUE of 0.28 kg/m3 in Thailand and the highest WUE of 1.25 kg/m3 in Bangladesh among the countries included in this study, and flood irrigation is used in most countries. Compared to flood irrigation, all water‐saving irrigation involved can increase rice WUE and reduce irrigation water input, alternate wet and dry irrigation (W1), and controlled irrigation (W2) were able to increase the WUE of rice by 49.86%, 84.74%, and reduce the irrigation water input by 36.55%, 39.55% respectively. Among the six types of water‐saving irrigation input, dry cultivation (W3) had the most significant effect on increasing WUE and reducing irrigation water, reaching 2.02 times and 67.53%, respectively. Based on the annual rainfall (R) and the application of water‐saving irrigation in Asia, sub‐regionally applicable water‐saving irrigation technologies are recommended. W3 is recommended when R <200 mm, W2 is recommended when 200 mm < R < 800 mm, and W1/W2/shallow alternate wet and dry irrigation (W5) is recommended when R >800 mm. According to the data collected in this paper, W1, W2, W3, and W5 can save 3.40 × 1011 m3, 3.78 × 1011 m3, 2.52 × 108 m3, 2.22 × 1011 m3 of irrigation water, respectively. Based on the calculations in this paper, different water‐saving irrigation techniques can save 3.50 × 1011 m3 of water in Asia according to the recommendations. To promote water‐saving irrigation technology, countries need to formulate policies to ensure the development of water‐saving irrigation technology, raise farmers' awareness of water conservation, and provide training and financial support. Promoting the use of different water‐saving irrigation technologies for different regions can significantly reduce irrigation water and increase the WUE of rice, which is important in addressing the challenges of global water scarcity.

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Section: Discussionmentioning

confidence: 99%

Current status of global rice water use efficiency and water‐saving irrigation technology recommendations

Haonan,

Jie,

Shihong

et al. 2023

J Agronomy Crop Science

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“…Numerous studies have examined the linkages and consequences of climate change and food security at various spatial scales [10][11][12][13][14][15][16][17][18][19]. Climate change affects food security in complex ways, which affects food production directly through changes in agroecological conditions and indirectly by affecting the growth and distribution of incomes, thus creating demand for agricultural produce [9,[20][21][22].…”

Section: Introductionmentioning

confidence: 99%

How Far Will Climate Change Affect Future Food Security? An Inquiry into the Irrigated Rice System of Peninsular India

et al. 2023

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Climate change poses a great challenge to food security, particularly in developing nations where important food crops such as rice and wheat have been grown in large quantities. The study investigates food security using an integrated approach, which comprises forecasting future rice production using the AquaCrop model and demand for rice using an economic model. The proposed approach was evaluated in the Cauvery delta zone in the eastern part of Tamil Nadu, which is a major rice-growing hotspot in peninsular India. Our results showed that the future rice productivity of the Cauvery delta region would be reduced by 35% between 2021 and 2040 and by 16% between 2041 and 2050. However, the supply–demand gap addressing food security in the Cauvery delta zone is positive for the future, as evidenced by the availability of surplus rice of 0.39 million tonnes for the period 2021–2030 and 0.23 million tonnes and 0.35 million tonnes for the periods 2031–2040 and 2041–2050, respectively. Nevertheless, as the neighboring regions are relying on rice production from the Cauvery delta, this surplus rice production is potentially not sufficient to meet the demand of the state as a whole, which suggests climate change may pose a severe threat to the food security of the Tamil Nadu State. These findings emphasize the necessity of performing regional-level food security assessments with a focus on developing location-specific policy options to mitigate the adverse effects of climate-induced anomalies on food security.

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“…Besides the method of cultivation, the efficient of production input usage also very determines the production of rice farming (Hormozi et al, 2013;Ojogho and Alufohai, 2010;Wen et al, 2011;Maruyama et al, 2014;Watkins et al, 2014). The effort of rice production increasing through the efficiency of input usage became the right choice.…”

Section: Introductionmentioning

confidence: 99%

Socio-Economic and Technical Efficiency Level of Organic Rice Farming with System of Rice Intensification: A Case Study in Morowali Regency Indonesia

Alam¹

2015

American Journal of Applied Sciences

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This research aimed to (1) analyze technical efficiency level of rice farming with System of Rice Intensification and non-System of Rice Intensification and (2) analyze the factors that affected technical efficiency of rice farming. The research was conducted in Morowali Regency Indonesia. The populations in this research were farmer associations of water users, who membered as many as 104 household heads. Sampling was done by census. The number of samples that were used as many as 104 household heads, 47 household heads of rice farmers with System of Rice Intensification and 57 household heads of farmers with non-System of Rice Intensification. The result showed rice farming with System of Rice Intensification had a higher technical efficiency level when compared with rice farming with non-System of Rice Intensification. This was due to rice farming with System of Rice Intensification had more farmers who used organic fertilizers. The usage of organic fertilizers, age of farmers, education of farmers, frequency of following extension and System of Rice Intensification affected toward the technical efficiency of rice farming. Farmers could increase organic rice production with System of Rice Intensification.

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Rice Green Revolution and Climatic Change in East Africa: An Approach from the Technical Efficiency of Rainfed Rice Farmers in Uganda

Cited by 7 publications

References 23 publications

Current status of global rice water use efficiency and water‐saving irrigation technology recommendations

Current status of global rice water use efficiency and water‐saving irrigation technology recommendations

How Far Will Climate Change Affect Future Food Security? An Inquiry into the Irrigated Rice System of Peninsular India

Socio-Economic and Technical Efficiency Level of Organic Rice Farming with System of Rice Intensification: A Case Study in Morowali Regency Indonesia

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