Survey of chocolate spot (Botrytis fabae) disease of faba bean (Vicia faba L.) and assessment of factors influencing disease epidemics in northern Ethiopia

Sahile, Samuel; Ahmed, Seid; Fininsa, Chemeda; Abang, Mathew M.; Sakhuja, P. K.

doi:10.1016/j.cropro.2008.07.011

Cited by 81 publications

(62 citation statements)

References 14 publications

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“…During focus group discussions, among the biotic problems, faba bean chocolate spot disease was ranked first in all villages of Finfine special zone and two villages of North Shewa zones, and second in all villages of Arsi Zone (Table 5). This is in agreement with the report of Sahile et al, (2008b).…”

Section: Sources Of Seedsupporting

confidence: 83%

Participatory assessment of production threats, farmers’ desired traitsand selection criteria of faba bean (Vicia faba L.) varieties:opportunities for faba bean breeding in Ethiopia

Tekalign¹,

Derera²,

Sibiya³

et al. 2016

IJARe

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Faba bean (Vicia faba L.) is an important legume crop used as a major source of dietary protein for subsistence farmers and of foreign currency for Ethiopia. However, yields have remained low, thus threatening food security. The objectives of this study were to assess major threats to faba bean production, determine farmers' varietal preferences and selection criteria, and assess farmers' perceptions of faba bean diseases. Data were collected from 240 households through a survey and participatory rural appraisal methodology. Major threats to faba bean production were chocolate spot disease, which was a persistent problem in the Ethiopian highlands, and lack of improved seed. Many farmers (>85%) recognised symptoms of chocolate spot disease but had various names for it. Disease severity was associated with growing susceptible local landrace varieties which resulted in low yields (0.56 to 2.8 t ha -1 ). About 66.4% of the farmers preferred local landraces for their adaptability to the environment, tolerance to frost, early maturity, good food taste and straw yield, while improved varieties grown by 10% of the farmers were preferred for high grain yield and bigger grain size. Therefore, opportunities exist to improve the preferred landraces for yield and disease resistance through breeding.

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Section: Sources Of Seedsupporting

confidence: 83%

Participatory assessment of production threats, farmers’ desired traitsand selection criteria of faba bean (Vicia faba L.) varieties:opportunities for faba bean breeding in Ethiopia

Tekalign¹,

Derera²,

Sibiya³

et al. 2016

IJARe

View full text Add to dashboard Cite

show abstract

“…Steinglein et al (2003) reported that moderate temperatures and high relative humidity were the most favourable conditions for the fungal disease epidemic development. Whereas, Sahile et al (2008) observed that altitude alone had no effect on the development of chocolate spot, the interaction of altitude and season had an effect on the diseases development. This points to the need to undertake multiyear/multi-season studies of ALS across different altitudinal ranges in eastern DRC.…”

Section: Discussionmentioning

confidence: 88%

“…Severity data were summarised, transformed into percentage severity index (PSI), which was calculated using the formula below (Sahile et al, 2008).…”

Section: Methodsmentioning

confidence: 99%

Prevalence of angular leaf spot disease and sources of resistance in common bean in eastern Democratic Republic of Congo

Kijana¹,

Abang²,

Edema³

et al. 2017

Afr. Crop Sci. J.

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“…The disease was scored at weekly intervals starting from the first chocolate spot symptom appearance and continued until the final podding stage when the disease attained maximum (Sahile et al, 2008;Villegas-Fernandez et al, 2012). Finally, the scores were converted into disease severity index (DSI) for the analysis (Hanounik, 1986;Ayman et al, 2009;Abo-Hegazy et al, 2012).…”

Section: Disease Assessmentmentioning

confidence: 99%

Reactions of improved faba bean varieties to chocolate spot (Botrytis fabae Sard.) epidemics across contrasting altitudes in southwest Ethiopia

Haile¹,

Adugna²,

Lemessa³

2016

Afr. J. Agric. Res.

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Chocolate spot (Botrytis fabae Sard.) is one of the major diseases menacing faba bean (Vicia faba L.) production and restraining its productivity in Ethiopia and other African countries. The yield losses reach up to 100% on susceptible cultivars. Although a number of faba bean varieties with good yield potential have been released, their reaction to this major disease and yield performance are little understood in southwest Ethiopia. Thus, chocolate spot epidemics on 13 improved faba bean varieties were studied under natural infections at three sites varying in altitudes from 1805 to 2660 m in the Dawuro zone of southwest Ethiopia. The field experiments consisted of 14 treatments (13 varieties and a local cultivar) are laid out in a randomized complete block design (RCBD) with three replications (40 plants/plot) during the 2011/2012 crop season. The onset and progress of chocolate spot severity was assessed (with a 1-9 scale) every seven days until the epidemic attained peak and then grain yield and 100-seed weight were recorded and statistically analysed. The varieties varied significantly (P < 0.001) in disease severity index, AUDPC and infection rates (r) values, grain yield and 100-seed weight. CS20DK, Degaga, Nc-58, Bulga-70, Tesfa and Kasa exhibited high to moderate resistance to chocolate spot with consistently slow progression and terminal disease severity, AUDPC-and r-values at all testing sites. The yield performance of CS20DK and Degaga were also superior at Tocha and Turi while Nc-58 (2027 kg/ha) and Moti (1973 kg/ha) that showed susceptible reaction gave good yield only at Tocha. This study indicated that improved faba bean varieties reacted differently to chocolate spot infection and yield potentials across varying localities, and thus better performing varieties such as CS20DK, Degaga and Nc-58 are recommended for faba bean production in southwest Ethiopia.

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Survey of chocolate spot (Botrytis fabae) disease of faba bean (Vicia faba L.) and assessment of factors influencing disease epidemics in northern Ethiopia

Cited by 81 publications

References 14 publications

Participatory assessment of production threats, farmers’ desired traitsand selection criteria of faba bean (Vicia faba L.) varieties:opportunities for faba bean breeding in Ethiopia

Participatory assessment of production threats, farmers’ desired traitsand selection criteria of faba bean (Vicia faba L.) varieties:opportunities for faba bean breeding in Ethiopia

Prevalence of angular leaf spot disease and sources of resistance in common bean in eastern Democratic Republic of Congo

Reactions of improved faba bean varieties to chocolate spot (Botrytis fabae Sard.) epidemics across contrasting altitudes in southwest Ethiopia

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