Insight into Re-emergence of Cassava Brown Streak Disease:  the Need to explore Diverse Approaches for Effective Control

Oladokun, John Oladeji

doi:10.15835/nsb11110353

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Nevertheless, as the emergence of a new viral disease is often reported, triggered by changes in climate and agricultural practices, the host plant preference and virus–vector relationship will play an important role into the insight of the virus. A single control method cannot solve the problem of any plant disease (Oladokun, ), and yield losses need to be minimized through an integrated management system using all available technologies coupled with the use of proper diagnostic tools. The emergence of a devastating ToBRFV disease, which has already rendered the resistance genes in tomato and pepper powerless, demands an urgent response.…”

Section: Discussionmentioning

confidence: 99%

Tomato brown rugose fruit disease: current distribution, knowledge and future prospects

et al. 2019

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Tomato is the most economically important fruit/vegetable crop grown worldwide. However, viral diseases remain an important factor limiting its productivity, with estimated quantitative and qualitative yield losses in tomato crops often reaching up to 100%. Many viruses infecting tomato have been reported, while new viral diseases have also emerged. The climatic changes the world is experiencing can be a contributing factor to the successful spread of newly emerging viruses, as well as the establishment of disease in areas that were previously either unfavourable or where the disease was absent. Because antiviral products are not available, strategies to mitigate viral diseases rely on genetic resistance/tolerance to infection, control of vectors, improvement in crop hygiene, roguing of infected plants and seed certification. Tomato brown rugose fruit virus (ToBRFV) is an emerging viral threat to tomato productivity and is currently spreading into new areas, which is of great concern to the growing global production in the absence of mitigation measures. This review presents the current knowledge about ToBRFV and future prospects for an improved understanding of the virus, which will be needed to support effective control and mitigation of the impact it is likely to cause.

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Section: Discussionmentioning

confidence: 99%

Tomato brown rugose fruit disease: current distribution, knowledge and future prospects

et al. 2019

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“…Global losses of CMD are estimated to reach 23 million tons of cassava [3] resulting from more than 70% reduction in photosynthetic leaf area necessary for root growth and development. On the other hand, CBSD had been reported to steer losses in root weight to 70% [4,5]. The losses generated in Kenya by these two viral diseases have not been clearly quantified despite the increasing trends of incidences and severity in major cassava growing zones and limited access as well as availability of tolerant varieties.…”

Section: Introductionmentioning

confidence: 99%

Field Screening of Elite Cassava (Manihot esculenta) Mutant Lines for their Response to Mosaic and Brown Streak Viruses

Kimno,

Kinyua,

Bimpong

et al. 2023

JEAI

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Cassava Brown Streak Disease (CBSD) and Cassava Mosaic Disease (CMD) have been major limiting biotic factors to the productivity of cassava farming in Kenya. Development of resistant cassava varieties is most effective way. The study was to determine response of elite cassava lines to CBSD and CMD under field conditions on different agro-ecological zones in Kenya. Screening was done under hot-spot field conditions where five lines together with their parents were evaluated in Randomized Complete Block Design with three replications at University of Eldoret (UoE), Solai and Marakwet sites in Kenya. Severity assessment done on 1-5 rating scale where 1 very resistant and 5 most susceptible. Elite cassava lines had significant differences in their response (p < 0.05) to CBSD and CMD. Additionally, genotypes, site and time interval were also significant (p < 0.05). The three elite lines (CAS1, CAS2 and CAS3) had better tolerance to both diseases compared to their parents (KME3 and KME4) with KME4 showing visible brown rings on the root typical of CBSD The elite lines CAS1, CAS2 and CAS3 identified to have better adaptability to both CBSD and CMD could be further exploited in breeding for new cassava varieties for Kenya and other countries in the region with similar ecology.

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Barriers confronting smallholder cassava farmers in the adoption and utilization of climate‐smart agriculture in the Afigya Kwabre South District, Ghana

Baffour‐Ata,

Boakye,

Acquah

et al. 2024

Climate Resilience

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Climate‐smart agriculture (CSA) is key to addressing climate change threats faced by smallholder farmers in Ghana. Nonetheless, evidence of the barriers challenging smallholder farmers in the implementation of CSA practices remains limited in Ghana. This study, therefore, investigated the barriers opposing smallholder cassava farmers in implementing CSA practices in the Afigya Kwabre South District, Ghana. The study used descriptive statistics and content analysis to analyze primary data collected through 200 household surveys and 10 key informant interviews from four selected communities (Aboabogya, Aduamoa, Aduman Old Town, and Aduman New Town) in the district. Results revealed that the smallholder cassava farmers implemented key CSA practices including mulching (89%), mixed farming (86%), crop diversification (84%), and crop rotation (81%) to build their resilience in food systems. Furthermore, the results showed that the critical enablers to the farmers’ utilization of CSA practices were access to weather and climate services (82%), a secured land tenure system (75%), and knowledge of the effects of climate change (68%). Also, the results indicated that the key barriers challenging smallholder cassava farmers in the implementation of CSA practices were inadequate technological assistance (91%), the incidence of pests and diseases (90%), and a lack of knowledge and understanding of CSA (90%). We recommend that smallholder cassava farmers adopt improved varieties of cassava that are resistant to pests and diseases, drought tolerant, high yielding, and possessing desirable quality traits. Smallholder cassava farmers can also participate in contract farming schemes that link them to agribusinesses that can offer them access to quality inputs, credit, training, and guaranteed markets for their produce.

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Insight into Re-emergence of Cassava Brown Streak Disease: the Need to explore Diverse Approaches for Effective Control

Cited by 3 publications

References 15 publications

Tomato brown rugose fruit disease: current distribution, knowledge and future prospects

Tomato brown rugose fruit disease: current distribution, knowledge and future prospects

Field Screening of Elite Cassava (Manihot esculenta) Mutant Lines for their Response to Mosaic and Brown Streak Viruses

Barriers confronting smallholder cassava farmers in the adoption and utilization of climate‐smart agriculture in the Afigya Kwabre South District, Ghana

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