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Agronomic and socio-economic assessment of the introduction of a rice-based mixed cropping system to the Cuvelai seasonal wetland system in northern Namibia
Agrekon ( IF 1.3 ) Pub Date : 2021-05-06 , DOI: 10.1080/03031853.2021.1917429
Yoshihiro Hirooka 1 , Tadayoshi Masuda 1 , Yoshinori Watanabe 2 , Yasuhiro Izumi 3 , Hiroyuki Inai 4 , Simon Awala 5 , Morio Iijima 1, 6
Affiliation  

ABSTRACT

In the semi-arid regions of southern Africa, around the borders of Angola with Namibia, the Cuvelai seasonal wetland system is formed by floods during the rainy season. The objective of the present study was to assess the effects of introduction of a rice-based mixed cropping system to the seasonal wetlands (ondombe in the local language) from agronomic, social, and economic perspectives. For this purpose, we used a simple methodology with a multidisciplinary approach for yield and household survey and scenario analysis in northern Namibia. The yield survey revealed that in ondombe, rice showed a higher yield performance than that of pearl millet and sorghum, even in a drought year. The farm household survey showed that introducing a rice-based mixed cropping to ondombe could help local farmers enhance crop productivity by reducing labour and providing high rice yield. In addition, scenario analysis based on the yield and household surveys conducted in these regions suggested that the introduction of the mixed cropping system to ondombe could compensate for one-fourth of the governmental urgent food import budget even in drought years. Therefore, this system is an effective option for sustainable agricultural production and environmental management in the studied region.



中文翻译:

在纳米比亚北部库韦莱季节性湿地系统中引入以水稻为基础的混合种植系统的农艺和社会经济评估

摘要

在南部非洲的半干旱地区,安哥拉与纳米比亚的边界附近,库韦莱季节性湿地系统是由雨季的洪水形成的。本研究的目的是从农艺、社会和经济角度评估以水稻为基础的混合种植系统对季节性湿地(当地语言为ondombe)的影响。为此,我们使用了一种简单的方法和多学科方法,在纳米比亚北部进行产量和住户调查以及情景分析。产量调查显示,在ondombe,即使在干旱年份,水稻也表现出比珍珠粟和高粱更高的产量表现。农户调查显示,在ondombe引入以水稻为基础的混合种植可以通过减少劳动力和提供高水稻产量来帮助当地农民提高作物生产力。此外,基于在这些地区进行的产量和住户调查的情景分析表明,即使在干旱年份,在Ondombe引入混合种植系统也可以弥补政府紧急粮食进口预算的四分之一。因此,该系统是研究区域可持续农业生产和环境管理的有效选择。

更新日期:2021-06-17
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