Effect of Storage Methods on Carbohydrate and Moisture of Cassava Planting Materials

Mdenye, Baraka Barnabas; Kinama, J.M.; Olubayo, Florence; Kivuva, Benjamin; Muthomi, James W.

doi:10.5539/jas.v8n12p100

Cited by 5 publications

(5 citation statements)

References 15 publications

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“…According to Mwango'mbe et al (2013), recycling of cassava cuttings is due to the scarcity experienced, because of the ravages of climate (long droughts) and for lack of innovative multiplication techniques. Considerable distances from most formal seed sources and storage challenges have been reported by Mdenye et al (2018) and El-Sharkawy (2003). Moreover, the characteristic of low multiplication in cassava (Otoo, 1994) associated with their relatively high cost per cutting and perishability (Mdenye et al, 2018) promotes recycling.…”

Section: Demographic and Farmer Characteristicsmentioning

confidence: 99%

“…Considerable distances from most formal seed sources and storage challenges have been reported by Mdenye et al (2018) and El-Sharkawy (2003). Moreover, the characteristic of low multiplication in cassava (Otoo, 1994) associated with their relatively high cost per cutting and perishability (Mdenye et al, 2018) promotes recycling.…”

Section: Demographic and Farmer Characteristicsmentioning

confidence: 99%

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Farmers' Sources and Varieties of Cassava Planting Materials in Coastal Kenya

Kidasi

Chao

Obudho

et al. 2021

Front. Sustain. Food Syst.

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Cassava (Manihot esculenta Crantz) grows in diverse agro-ecological zones. In Kenya, it is widely cultivated in Western and Coastal regions. It is mainly grown for food and nutrition security and excess roots are sold to generate income for the farm households. Its productivity per unit of the land area is high compared to maize and wheat which are staple crops in the country. However, scarcity of cassava planting materials and pests and diseases limit production in these regions. This study aimed at revealing the sources and varieties of cassava planting materials used by farmers and other farmers' practices in coastal Kenya. Four focus group discussions (FGD) and a survey were conducted in 2018, using a semi-structured questionnaire targeting 250 farmers. The data collected on the sources of planting materials, preferred varieties and the practices employed by the farmers in cassava production, was analyzed using descriptive statistics. Majority of farmers (83%) interviewed indicated that they recycled planting materials from the previous crop while some 67% respondents obtained the planting material from their neighbors. Kenya Agricultural and Livestock Research Organization's (KALRO) and the local markets were reported as sources of planting materials by 11 and 5% farmer respondents, respectively. The only formal seed source reported was KALRO. The rest, own seed, neighbors, and the local markets, were informal seed sources. Piecemeal harvesting practiced by 98% of the farmers favored planting material recycling. Farmers dedicated a small proportion of their land (mean 0.2 ha) to cassava production as reported by 60 and 72.8% of farmers from Taita Taveta and Kilifi, respectively. Slightly above half (56%) of the farmers in Kilifi dedicated slightly more land to cassava, planting between 100 and 4,000 cuttings (2.5% of an acre up to a full acre) compared to 87% farmers from Taita Taveta who planted 100 cuttings or less (which is about 2.5% of an acre or less). A majority (81.1%) of farmers in Taita Taveta planted local cassava varieties compared to Kilifi's 57.8%. Slightly above half of the farmer respondents reported Kibandameno as the preferred variety followed by Tajirika as the second preferred variety as reported by 18% farmers. Kibandameno was preferred for its sweet taste by 75.6% farmers while Tajirika was preferred by 52.4% farmers because of the high yielding capacity. Nearly all farmer respondents, in Taita Taveta County obtained the planting material from informal seed sources, except a negligible number, who reported buying their planting material from KALRO, a formal seed source, far from their locality. Farmers sourcing cuttings from a formal seed source such as those from Kilifi County were more likely to use a tractor for land preparation compared to those who sourced planting materials informally who more likely had scarce knowledge on cassava production and the value of cassava. Therefore, interventions to establish a sustainable healthy cassava planting materials seed system are needed to address the systemic constraint and help develop a viable cassava value chain.

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Section: Demographic and Farmer Characteristicsmentioning

confidence: 99%

Section: Demographic and Farmer Characteristicsmentioning

confidence: 99%

Farmers' Sources and Varieties of Cassava Planting Materials in Coastal Kenya

Kidasi

Chao

Obudho

et al. 2021

Front. Sustain. Food Syst.

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“…CBB [28]. However, most farmers cannot afford such fertility inputs due to financial constraints [29,30]. Lack of access to improved cultivars has also been linked to increased CBB presence which is the case of most farmers in Sub-Saharan Africa including Kenya leaving them vulnerable in the event of an epidemic [5].…”

Section: Discussionmentioning

confidence: 99%

Effect of farmers’ knowledge and production practices on the intensity of cassava bacterial blight in Western Kenya

Okoth,

Muthomi,

Mwang’ombe

2024

J App Biol Biotech

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The study was conducted to determine the association between farmers’ knowledge and production practices on the intensity of cassava bacterial blight (CBB) in Western Kenya. Multistage sampling was used to select 193 farms in Nambale and Teso south sub-counties in Western Kenya. A semi-structured questionnaire was administered to obtain information on farmer’s knowledge and cassava production practices. Within each farm, bacterial blight incidence was determined and 30 cassava plants were evaluated for disease severity. Symptomatic leaf samples were collected for isolation and confirmation of the CBB pathogens. GPS coordinates of each farm were taken for the development of disease distribution maps. Data analysis included descriptive statistics and the Chi-square test which was used to determine the association between sociodemographic traits and disease incidence. CBB was prevalent in both sub-counties and Xanthomonas phaseoli pv manihotis was the more widespread compared to Xanthomonas axonopodis pv cassavae. However, there was no association between CBB incidence, training, seed source, and intercropping suggesting that other factors contributed to the high prevalence of the disease. About 85% of the farmers interviewed were unaware of the disease suggesting that the farmers could be spreading the disease unknowingly through the use of self-recycled and neighbor-obtained cassava cuttings. The findings of this study will contribute toward measures aimed at curbing the disease and its spread.

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“…However, we could observe that, for example, a consistent number of fields in the cluster 1 were located a bit far from main roads/rails than fields from cluster 2. Such distant location pattern of cassava fields could narrow the possibilities in the sourcing of cuttings since the transportation of vegetative material over long distances can be a serious limit for the farmer as seen in the literature (El-sharkawy, 2004;Mdenye et al, 2016;Kidasi et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Risk factors associated with cassava brown streak disease dissemination through seed pathways in Eastern D.R. Congo

et al. 2022

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Vegetatively propagated crops are particularly prone to disease dissemination through their seed systems. Strict phytosanitary measures are important to limit the impact of diseases as illustrated by the potato seed system in Europe. Cassava brown streak disease (CBSD) is a devastating disease caused by two viral species collectively named cassava brown streak viruses (CBSVs). CBSD can cause substantial root yield losses of up to 100% in the worst affected areas and is easily transmitted through stem cuttings. In Eastern and Central Africa, the epidemiology of CBSVs in the local socio-economical context of production remains poorly known while a better understanding would be an asset to properly manage the disease. This lack of information explains partially the limited efficiency of current regulatory schemes in increasing the availability of quality seed to smallholders and mitigating the spread of pests and diseases. This study surveyed the epidemiology of CBSVs in Uvira territory, Eastern D.R. Congo, and its drivers using a multivariate approach combining farmer’s interview, field observation, sampling and molecular detection of CBSVs. Investigation on the epidemiology of CBSD revealed that three clusters in the study area could be identified using five most significant factors: (i) symptoms incidence, (ii) number of whiteflies, (iii) types of foliar symptoms, (iv) cutting’s pathways and (v) plant age. Among the three clusters identified, one proved to be potentially interesting for seed multiplication activities since the disease pressure was the lowest. Through risk assessment, we also identified several key socio-economic determinants on disease epidemy: (i) factors related to farmer’s knowledge and awareness (knowledge of cassava pests and diseases, knowledge of management practices, support from extension services and management strategies applied), (ii) factors related to the geographical location of farmer’s fields (proximity to borders, proximity to town, distance to acquire cuttings), as well as (iii) the pathways used to acquire cuttings.

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Effect of Storage Methods on Carbohydrate and Moisture of Cassava Planting Materials

Cited by 5 publications

References 15 publications

Farmers' Sources and Varieties of Cassava Planting Materials in Coastal Kenya

Farmers' Sources and Varieties of Cassava Planting Materials in Coastal Kenya

Effect of farmers’ knowledge and production practices on the intensity of cassava bacterial blight in Western Kenya

Risk factors associated with cassava brown streak disease dissemination through seed pathways in Eastern D.R. Congo

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