Crop Growth, Disease and Yield Components of Rusted <i>Phaseolus</i> Beans in Ethiopia

Habtu, Alem; Zadoks, J.C.

doi:10.1111/j.1439-0434.1995.tb00283.x

Cited by 4 publications

(3 citation statements)

References 21 publications

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“…This relationship was seen from early pod formation (41 DAP) but became stronger with time, which implies that leaf area duration was particularly important in conferring a large yield. Similar results were obtained by Hatbu & Zadoks (1995) and Berrocal-Ibarra et al (2002) working with common bean and have also been reported in soybean (Kumudini et al 2001;Kumudini 2002;Takahashi et al 2003).…”

Section: Discussionsupporting

confidence: 88%

Yield formation in Nicaraguan landraces of common bean compared to bred cultivars

Gomez

Frankow‐Lindberg

2005

J. Agric. Sci.

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Dry matter accumulation and its partitioning to different plant components were studied in six common bean populations (two bred cultivars and four landraces) with different yield potentials. The hypothesis that yield was correlated with leaf area or mass and also with leaf area duration was tested. Leaf area and total above-ground dry matter were sampled weekly between 13 and 62 days after planting (DAP). Yield, yield components and seed yield rate were measured at the final harvest. No differences in total above-ground dry matter were observed among populations up to 62 DAP. Bred cultivars had significantly larger leaf areas than the landraces at the last harvest. Landraces initially partitioned more dry matter to reproductive organs but this was not reflected in higher yields. Temporary differences in growth rate and rate of pod formation were observed among the populations. Landraces, with one exception, tended to grow faster at early stages, and they also reached their maximum number of pods per plant earlier than the bred cultivars. Bred cultivars yielded more than all but one of the landraces. In general, yield was positively correlated with the total number of pods per plant, which in turn was well correlated with leaf area and mass. It was concluded that an increase in leaf area duration and a balanced development of reproductive organs v. other plant components are important traits in conferring improvement in yield of common bean.

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Section: Discussionsupporting

confidence: 88%

Yield formation in Nicaraguan landraces of common bean compared to bred cultivars

Gomez

Frankow‐Lindberg

2005

J. Agric. Sci.

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“…Such data can be generated through sequential analysis, a quantitative scrutiny of events by means of cross-sectional and longitudinal studies (Zadoks, 1972;1978). This approach has been effectively used in establishing relationships between disease, crop growth, yield and yield components in the bean rust pathosystem (Habtu & Zadoks, 1995;Habtu et al,1997).…”

Section: Introductionmentioning

confidence: 99%

Yield loss of lentil caused byUromyces viciae-fabae

Negussie

Pretorius

2008

South African Journal of Plant and Soil

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Yield loss in lentil (Lens culinaris Medik.) due to rust (Uromyces viciae-fabae [Pers.] J. Schröt) was determined by assessing crop and disease parameters at different growth stages and leaf canopy layers in field epidemics at Akaki, Ethiopia. The epidemics were created by inoculation of the rust-susceptible cultivar EL-142 with U. viciae-fabae and spraying plots with tebuconazole at different frequencies. The epidemics produced disease progress curves that varied significantly in the rate (r L ) of temporal progression and area under the disease progress curve (AUDPC). The rust epidemic, in particular between early flowering and early pod formation, had a significant influence on seed yield, pods per plant and seed mass. Mean seed yield losses up to 41.6% were recorded. The number of seeds per pod remained unaffected by the disease. The effect of rust on seed yield of lentil can be predicted with AUDPC and critical-point models using disease severity assessed on the upper canopy layer in the early flowering stage. Every 1% increase in rust severity reduced seed yield by 8.4%. Rust severity ≥ 4.7% at the critical early flowering stage significantly reduced seed yield, and hence, any measure that keeps severity below this threshold level would be advisable.

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“…Crous & Braun] of dry beans in Tanzania, Mongi et al (2018) demonstrated that the yield components of various treatments were strongly influenced by the amount of rain received during the growing season because of its influence on disease development. Habtu and Zadoks (1995) speculated that the effect of bean rust [Uromyces appendiculatus (Pers.) Link] on yield components varied with climatic conditions, cultivars, and the host-parasite interaction.…”

Section: Discussionmentioning

confidence: 99%

Effects of seed infection and hydration on the buildup of common bacterial blight and its impact on the yield of dry beans

Conner

McRae²,

Hwang

et al. 2021

Can. J. Plant Sci.

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Common bacterial blight (CBB), caused by Xanthomonas axonopodis pv. phaseoli (Xap), is a serious foliar disease of dry bean (Phaseolus vulgaris). A four-year field study examined the effects of different sources of infection and seed hydration on CBB development, yield components and yield in seven resistant or susceptible dry bean lines and cultivars. The five agronomic treatments examined included clean seed, diseased seed, hydrated diseased seed, clean seed with a Xap spray and diseased seed with a Xap spray. Disease development, the yield components and yield were strongly influenced by weather conditions. In comparison with the diseased-seed treatment, the use of clean (disease-free) seed reduced the incidence of CBB leaf infection in the susceptible dry bean cultivars, but no similar benefit was observed in the resistant lines and cultivars. During the three dry growing seasons, the seed hydration treatment increased the incidence of CBB leaf infection compared with the diseased-seed treatment for the susceptible cultivars, but not for the resistant lines and cultivars. In the wet growing season, no significant difference in the incidence of leaf infection was observed between the hydrated seed and diseased-seed treatments in any of the cultivars, possibly because the wet soil conditions promoted pathogen development within the bean plants that year. Seed hydration did not improve seed yield in the dry years, but sometimes decreased it under wet conditions. Therefore, seed hydration cannot be recommended for use in the production of dry beans.

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Crop Growth, Disease and Yield Components of Rusted Phaseolus Beans in Ethiopia

Cited by 4 publications

References 21 publications

Yield formation in Nicaraguan landraces of common bean compared to bred cultivars

Yield formation in Nicaraguan landraces of common bean compared to bred cultivars

Yield loss of lentil caused byUromyces viciae-fabae

Effects of seed infection and hydration on the buildup of common bacterial blight and its impact on the yield of dry beans

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