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Comparing effectiveness, cost- and time-efficiency of control options for Xanthomonas wilt of banana under Rwandan agro-ecological conditions
European Journal of Plant Pathology ( IF 1.7 ) Pub Date : 2021-03-20 , DOI: 10.1007/s10658-021-02258-z
Guy Blomme , Petronille Dusingizimana , Jules Ntamwira , Elizabeth Kearsley , Svetlana Gaidashova , Anne Rietveld , Boudy Van Schagen , Walter Ocimati

Xanthomonas wilt of banana (XW) is a major disease affecting banana throughout East and Central Africa (ECA). Initial control was through complete diseased mat uprooting (CDMU), which had limited adoption due to high labour demands and cost. Further research demonstrated single diseased stem removal (SDSR) was an effective, less labour intensive and less costly alternative to CDMU. A comparative assessment of the two control practices was needed to foster uptake by policy makers, especially in countries like Rwanda where SDSR had not been tested or scaled up. To test SDSR in Rwanda, a study was conducted in farmers’ fields comparing the effectiveness, labour cost and time demands of CDMU and SDSR. SDSR was equally effective as CDMU for XW control, with initial XW incidences of 3.0 to 9.4% being reduced to <0.5% within 3 months of using either method. The major benefit of SDSR lies in its significantly lower resource requirements. The total time needed for applying SDSR on a single plant was 88% less, averaging 4.3 min (standard deviation, sd = 0.3) compared to 36.5 min (sd = 4.5) for CDMU on a complete mat. Accordingly, the cost of labour was significantly lower for SDSR. The main cost of CDMU (78% of total cost) arose from the need to replant with healthy banana plantlets. The total cost of SDSR (26 Rwandan Francs [Frw], sd = 2) was 96% lower than that for CDMU (619 Frw, sd = 27). Hence, the incentive to use SDSR for managing XW is very high. These findings will boost SDSR adoption by both policy makers and farmers in ECA.



中文翻译:

在卢旺达农业生态条件下比较香蕉黄单胞菌枯萎病防治方案的有效性,成本效率和时间效率

香蕉枯萎病(XW)是影响整个东非和中非(ECA)香蕉的主要疾病。最初的控制是通过完全生病的草根连根拔除(CDMU),由于劳动力需求高和成本高,因此采用率受到限制。进一步的研究表明,单病种摘除术(SDSR)是CDMU的一种有效,省力,省钱的替代方法。需要对这两种控制措施进行比较评估,以促进决策者的采纳,尤其是在卢旺达等国家,SDSR尚未经过测试或扩大规模。为了测试卢旺达的SDSR,在农民田间进行了一项研究,比较了CDMU和SDSR的有效性,人工成本和时间需求。对于XW控制,SDSR与CDMU一样有效,最初的XW发生率从3.0%到9.4%降低到<0。使用任何一种方法在3个月内达到5%。SDSR的主要优点在于其资源需求大大降低。在单个工厂上应用SDSR所需的总时间减少了88%,平均为4.3分钟(标准偏差,sd = 0.3),而在完整的垫子上CDMU的平均时间为36.5分钟(sd = 4.5)。因此,SDSR的人工成本大大降低。CDMU的主要成本(占总成本的78%)是因为需要重新种植健康的香蕉苗。SDSR的总成本(26卢旺达法郎[sr] = 2)比CDMU(619卢比[sd] = 27)低96%。因此,使用SDSR来管理XW的动机非常高。这些发现将促进ECA中的政策制定者和农民采用SDSR。在单个工厂上应用SDSR所需的总时间减少了88%,平均为4.3分钟(标准偏差,sd = 0.3),而在完整的垫子上CDMU的平均时间为36.5分钟(sd = 4.5)。因此,SDSR的人工成本大大降低。CDMU的主要成本(占总成本的78%)是因为需要重新种植健康的香蕉苗。SDSR的总成本(26卢旺达法郎[sr] = 2)比CDMU(619卢比[sd] = 27)低96%。因此,使用SDSR来管理XW的动机非常高。这些发现将促进ECA中的政策制定者和农民采用SDSR。在单个工厂上应用SDSR所需的总时间减少了88%,平均为4.3分钟(标准偏差,sd = 0.3),而在完整的垫子上CDMU的平均时间为36.5分钟(sd = 4.5)。因此,SDSR的人工成本大大降低。CDMU的主要成本(占总成本的78%)是因为需要重新种植健康的香蕉苗。SDSR的总成本(26卢旺达法郎[sr] = 2)比CDMU(619卢比[sd] = 27)低96%。因此,使用SDSR来管理XW的动机非常高。这些发现将促进ECA中的政策制定者和农民采用SDSR。CDMU的主要成本(占总成本的78%)是因为需要重新种植健康的香蕉苗。SDSR的总成本(26卢旺达法郎[sr] = 2)比CDMU(619卢比[sd] = 27)低96%。因此,使用SDSR来管理XW的动机非常高。这些发现将促进ECA中的政策制定者和农民采用SDSR。CDMU的主要成本(占总成本的78%)是因为需要重新种植健康的香蕉苗。SDSR的总成本(26卢旺达法郎[sr] = 2)比CDMU(619卢比[sd] = 27)低96%。因此,使用SDSR来管理XW的动机非常高。这些发现将促进ECA中的政策制定者和农民采用SDSR。

更新日期:2021-03-21
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