Root rot pathogens in field soil, roots and seeds in relation to common bean (<i>Phaseolus vulgaris</i>), disease and seed production

Naseri, Bita; Mousavi, S S

doi:10.1080/09670874.2014.993001

Cited by 29 publications

(27 citation statements)

References 19 publications

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“…Finally, it should be noted that in our trials, we did not observe any effects of CA on plant diseases, but pathogens can be a major problem in beans production systems worldwide (e.g. Naseri and Mousavi, 2015), and may be either exacerbated or suppressed under CA practices (Page et al, 2013).…”

Section: Pest-regulating Servicesmentioning

confidence: 55%

Evaluating pest-regulating services under conservation agriculture: A case study in snap beans

Brainard

Bryant

Noyes

et al. 2016

Agriculture, Ecosystems & Environment

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Although conservation agriculture (CA) practices including strip-tillage (ST) and cover cropping are promoted largely for their potential benefits for soil quality, uncertainty surrounding their short-term effects on pests often constrains adoption. Quantification of ecosystem services or dis-services associated with pests is an important step in identifying research and policy priorities for improving the performance of CA practices. Beans provide an important source of income and nutrition worldwide and often respond positively to CA practices. However, beans are vulnerable to pest complexes which may be positively or negatively influenced by CA practices. Using insect, weed and yield data from snap beans in a three year vegetable rotation, we estimated the value of pest-regulating services associated with the adoption of CA, and compared it to establishment and management costs associated with implementing CA.

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Section: Pest-regulating Servicesmentioning

confidence: 55%

Evaluating pest-regulating services under conservation agriculture: A case study in snap beans

Brainard

Bryant

Noyes

et al. 2016

Agriculture, Ecosystems & Environment

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“…Such developments influence the ultimate crop yield and reduce the commercial value of the crop as well (Naseri and Mousavi, 2015). This may, therefore, give a positive indication of possible need of control measures.…”

Section: Discussionmentioning

confidence: 99%

“…campestris (Bradbury, 1986), plant debris (Barak and Liang, 2008). Nevertheless, seed-borne inoculum remains paramount importance for most pathogen infections (Naseri and Mousavi, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…campestris (Bradbury, 1986), plant debris (Barak and Liang, 2008). Nevertheless, seed-borne inoculum remains paramount importance for most pathogen infections (Naseri and Mousavi, 2015).Generally, seed pathogens transferred to plants during growth cause considerable loss of crop yields globally (Copeland and McDonald, 2001), but limited literature on the economic losses caused by these pathogens on TLVs have been reported. For example, Ngadze (2014) reported that some plant diseases may affect the plants during the growing phase and later stages in storage as well.…”

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confidence: 99%

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Seed health tests of traditional leafy vegetables and pathogenicity in plants

Dube¹,

Struik²,

Ngadze³

2018

Afr. J. Agric. Res.

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Traditional leafy vegetables play a significant role in the daily diets of many people in Zimbabwe. They are produced by smallholder farmers with limited knowledge on the agronomic value of high-quality seed, on seed storage, and on plant-and seed-borne pathogens. The quality of the seed is rarely tested for seed-borne pathogens posing risks of pathogen build-up. This study was conducted in order to determine the seed-borne pathogens associated with traditional leafy vegetable seeds. Seeds were collected from five different farmers in three provinces of Zimbabwe and tested for the presence of pathogens in the plant pathology laboratory of the University of Zimbabwe. A total of 154 fungal and 233 bacterial infections were recorded on 450 seeds for each type of pathogen. Significantly high percentages of the isolates (Xanthomonas campestris, Curvularia spp., Alternaria alternata, Fusarium oxysporum and Pseudomonas syringae) were obtained from the three different species of traditional leafy vegetables (Amaranthus hybridus, Bidens pilosa and Cleome gynandra). F. oxysporum, A. alternata, X. campestris and Bacillus spp. isolates were pathogenic to traditional leafy vegetable plant species as confirmed by pathogenicity tests, hence may have significant effects on traditional leafy vegetables production. The results indicate that seed sourced from farmers 1, 2, 3 and 4 resulted in seed-borne pathogens on both the seed and plants, clearly showing that seed quality was poor. Although most pathogens observed have a broad host spectrum, pathogenicity and virulence tests confirmed that some pathogens were likely to be closely associated with these traditional leafy vegetable seed species.Key words: Seed-borne pathogens, disease occurrence, pathogenicity, bacteria, fungi, seed quality. INTRODUCTIONTraditional leafy vegetables (TLVs) of Africa refer to plant species, which originated on the continent and have a long history of cultivation, domestication and use in African conditions (Ambrose-Oji, 2009). Amaranthus spp. combine both social and socio-economic importance in Kenya and Tanzania as a multi-purpose vegetable with environmental adaptability, nutritional, medicinal and income generation properties (Weinberger and Msuya, 2004;Abukutsa-Onyango, 2007), and have gained popularity also in Zimbabwe. Mukwereza (2002) Across Africa, TLVs are produced and marketed by smallholder farmers (Ngugi et al., 2007) with limited access to advanced agro-technology including limited knowledge of the agronomic value of high-quality seed (Biemond et al., 2012), lack of information on seed storage (Cernansky, 2015), on appropriate use of chemicals like pesticides and fertilizers (Schippers, 2000), plants and seed-borne pathogens. These smallholder farmers obtain most of their seeds from their neighbours or informal seed markets (Ngwerume and Mvere, 2003;Adebooye et al., 2005;Guei et al., 2011).This seed is most likely to be of poor quality. Seed is rarely tested for germination and seed-borne pathogens, increasing risks of seed degeneratio...

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“…Seedborne pathogenic fungi can prevent germination, kill seedlings, or reduce plant growth by damaging the roots and the vascular system, which prevents the transport of water and nutrients (Mancini et al 2016). Seedborne pathogenic fungi that cause losses of yield and quality of bean worldwide include Sclerotinia sclerotiorum, Fusarium oxysporum., F.solani, and Rhizoctonia solani (Schwartz et al 2005;Naseri et al 2008). Recommended fungicides are often effective but windy weather weakens their effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Fungal Biodiversity on Runner Bean Growing in Two Systems of Plant Protection

Kopacki¹,

Parafiniuk²,

Skwaryło-Bednarz³

2017

Farm Machinery and Processes Management in Sustainable Agriculture, IX International Scientific Symposium

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The aim of the investigation was to evaluate three fungicides (Dithane NeoTec 75 WG, Sumilex 500 SC, Amistar 250SC) for their antifungal activity against fungi occurring on bean seeds using two types of nozzles: standard RS-MM 110 03 and injector type ID 120 03 C. Studies of three years (2007-2009) were conducted at Czesławice in the southeast of Poland. The objects of research were the plants and seeds of cultivar Blanka. The following agents were used for protection. Observations were carried out in October in each year. Diseased plants were collected for mycological analysis. Seeds with symptoms were noticed on the investigated plantations. The results of mycological analysis showed that bean plants were colonized by Fusarium spp., Sclerotinia spp. and Alternaria alternata. The best health status and the lowest number of colonies were noticed on plants protected by azoksystrobine with both types of nozzles.

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Root rot pathogens in field soil, roots and seeds in relation to common bean (Phaseolus vulgaris), disease and seed production

Cited by 29 publications

References 19 publications

Evaluating pest-regulating services under conservation agriculture: A case study in snap beans

Evaluating pest-regulating services under conservation agriculture: A case study in snap beans

Seed health tests of traditional leafy vegetables and pathogenicity in plants

Fungal Biodiversity on Runner Bean Growing in Two Systems of Plant Protection

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