Occurrence of Root Rot Disease of Common Bean (Phaseolus vulgaris L.) In Association with Bean Stem Maggot (Ophyiomia sp.) In EMBU District, Kenya

Mwang’ombe, A. W.; Olubayo, F; Kiprop, E. K.

doi:10.3923/ppj.2007.141.146

Cited by 9 publications

(2 citation statements)

References 8 publications

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“…Insect pests are a major limiting factor in crop production, leading to up to 50% yield loss in developing countries (Grzywacz, Stevenson, Mushobozi, Belmain & Wilson, 2014;Mwang'ombe, Thiongo, Olubayo, & Kiprop, 2007;Shannag and Ababneh, 2007).…”

Section: Introductionmentioning

confidence: 99%

Knowledge gaps among smallholder farmers hinder adoption of conservation biological control

Mkenda

Ndakidemi

Stevenson

et al. 2020

Biocontrol Science and Technology

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Conservation biological control uses habitat management to enhance the survival and impact of arthropod natural enemies for pest control. Its advantages are that it relies on native or established invertebrate populations that are adapted to local agricultural ecosystems and conditions. We surveyed 300 farmers in three agro-ecological zones of Kilimanjaro Region, Tanzania to assess farmers' knowledge of natural enemies, insect pests and pesticide use and ways of accessing agricultural information to identify hurdles to the adoption of conservation biological control measures. Data were collected through face to face interviews using questionnaires and pictures and by using a novel voiceresponse mobile phone survey. The farmers surveyed regarded almost all insects as pests, with data analyses revealing that 98.7% of farmers were completely unaware of natural enemies. After completing a short training course, however, awareness was transformed, with 80% of farmers recognising beneficial insects and expressing an intention to change farming practices to enhance their survival within the crop. Access to information about synthetic pesticide alternatives was a limiting factor to uptake of biological control measures with 8.7% of farmers reporting no access to agricultural information, while others were mostly dependent on agricultural officers. These findings identified a severe lack of knowledge among smallholder farmers about beneficial insects which will impact adoption of conservation biological control. We recommend improved access to information and knowledge among the technical officers and the smallholder farmers with direct training on agro-ecological intensification for wider adoption of conservation biological control.

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Section: Introductionmentioning

confidence: 99%

Knowledge gaps among smallholder farmers hinder adoption of conservation biological control

Mkenda

Ndakidemi

Stevenson

et al. 2020

Biocontrol Science and Technology

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“…Bean stem maggot has caused considerable quantitative and qualitative yield losses (30 to 100%) of common beans worldwide (Ochilo and Nyamasyo, 2010;Abate et al, 2011;Munyasa, 2013;MoANR and EATA, 2018). Yield losses had significantly associated with higher damage/severity, bean plant mortality, stunting, interference with water and mineral translocation due to oviposit of BSM with plant tissue and allowing for root rot diseases (Leteourneau and Msuku, 1992;Odendo et al, 2005;Mwang'ombe et al, 2007;Ochilo and Nyamasyo, 2010;Kiptoo et al, 2016;MoANR and EATA, 2018). Evaluation of insecticide seed treatment performance is best when BSM pressure is high and when environmental conditions are variable, especially rainfall and temperature (Songa and Ampofo, 1999;Abate et al, 2011).…”

Section: Partial Budget Analysismentioning

confidence: 99%

Treatments of common bean seeds (Phaseolus vulgaris L.) with insecticides for managing bean stem maggot [Ophiomyia spp. (Tryon) (Diptera: Agromyzidae)] in SNNPR, Ethiopia

Mengesha

Salo

Cheleko

et al. 2022

Arch. Agric. Environ. Sci.

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Bean stem maggot (BSM) is one of the main threatening insect pests that cause significant bean plant mortalities and associated grain yield reductions. The field research work was conducted for three successive years (2018 - 2020) in Burji, southern Ethiopia, to decide the effects of insecticide seed treatment in reducing bean plant mortality and severity/damage caused by BSM and enhancing the grain yield of common bean. The research contained seven treatments and was arrayed in a randomized complete block design with three replicas. In 2018, the lowest seedling mortality (SM) (11.78%) and matured plant mortality (MPM) (21.89%) were registered from Diazinone-treated plots. However, it was not statistically varied from Thiram + Carbofuran (13.33% for SM and 22.22% for MPM). Bean seeds treated with Diazinon considerably reduced initial percent severity index (PSIi) by 79.79% and final percent severity index (PSIf) by 79.98%, followed by Thiram + Carbofuran with PSIi by 55.67% and PSIf by 76.98% over untreated plots. Lowest total number of larvae (TNL) (15.00 and 22.67) and pupae (TNP) (11.00 and 13.67) were noted from Diazinone and Thiram + Carbofuran, in that order. Comparable fashions for SM, MPM, PSIi, PSIf, TNL, and TNP were encountered for these insecticides in 2019 and 2020. Grain yields of 2229.37 and 2213.39 kg ha-1 (in 2018) and 2648.29 and 2503.20 kg ha-1 (in 2020) were attained from Diazinone and Thiram + Carbofuran, respectively. Monetary analysis also affirmed that Diazinone ($126,429.52 ha-1) and Thiram + Carbofuran ($122,241.67 ha-1) led to a higher monitory advantage over untreated control and other insecticides. Therefore, Diazinon and Thiram + Carbofuran, one of them as an alternative option, could be advised as a seed treatment to the growers for efficient control of BSM and optimization of grain yield.

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Inhibitory Influence of Organic and Inorganic Sodium Salts and Synthetic Fungicides Against Bean Root Rot Pathogens

Türkkan

Erper

2015

Gesunde Pflanzen

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Occurrence of Root Rot Disease of Common Bean (Phaseolus vulgaris L.) In Association with Bean Stem Maggot (Ophyiomia sp.) In EMBU District, Kenya

Cited by 9 publications

References 8 publications

Knowledge gaps among smallholder farmers hinder adoption of conservation biological control

Knowledge gaps among smallholder farmers hinder adoption of conservation biological control

Treatments of common bean seeds (Phaseolus vulgaris L.) with insecticides for managing bean stem maggot [Ophiomyia spp. (Tryon) (Diptera: Agromyzidae)] in SNNPR, Ethiopia

Inhibitory Influence of Organic and Inorganic Sodium Salts and Synthetic Fungicides Against Bean Root Rot Pathogens

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