Socio-Economic and Scientific Impact Created by Whitefly-Transmitted, Plant-Virus Disease Resistant Tomato Varieties in Southern India

Colvin, John; Nagaraju, N.; Moreno-Leguizamon, Carlos; Govindappa, RM; Reddy, TB Manjunatha; Padmaja, S.; Joshi, Nidhi; Hanson, Peter; Seal, Susan; Muniyappa, V.

doi:10.1016/s2095-3119(12)60018-5

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…About 90% of the farmers relied on pesticides to control the disease. Colvin et al (2012) followed up on this study and interviewed 75 tomato farmers in seven districts of Karnataka in 2003. They estimated that tomato leaf curl virus disease caused losses of up to one third of farmers' income during each season and showed through an experiment that tomato leaf curl virus diseaseresistant tomato varieties gave nearly five times greater profit and reduced pesticide use compared with non-resistant varieties.…”

Section: Introductionmentioning

confidence: 99%

Farmers' perceptions and management of plant viruses in vegetables and legumes in tropical and subtropical Asia

et al. 2015

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a b s t r a c tIncidence of vector-transmitted virus diseases and the damage caused to vegetable crops by these diseases are reported to be increasing in countries with tropical and subtropical conditions. Virus-resistant crops and an integrated approach to crop management including appropriate control of plant-virus insect-vectors could reduce the problem. However, in developing countries, such a strategy is rarely applied effectively. We surveyed 800 growers of chili, tomato and mungbean in India, Thailand and Vietnam to understand what farmers know about plant viruses, their perceptions about yield damage, the control methods they choose to apply and the perceived effectiveness of these. Farmers regarded their economic losses from pests and diseases to be very substantial. Only a minority of them knew that certain disease symptoms were probably being caused by a plant virus and even fewer knew about the role of insect vectors in its spread. Farmers mostly relied on synthetic pesticides to manage the virus disease symptoms they observed. If farmers had better knowledge about plant viruses, their insect vectors, and cost-effective, safer means of control, then use of synthetic pesticides could be reduced substantially. Building knowledge among farmers is therefore an important way to address the diseases caused by plant viruses, while the development of virus-resistant varieties and simple and effective methods of vector control offer longer-term solutions.

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Section: Introductionmentioning

confidence: 99%

Farmers' perceptions and management of plant viruses in vegetables and legumes in tropical and subtropical Asia

et al. 2015

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“…This lack of knowledge could be one of the reasons for the high virus prevalence reported in previous surveys (Gildemacher et al 2009;Muthomi et al 2009). Just like in this study, limited knowledge of plant viruses as opposed to other pathogens has been reported by other authors working on different crops elsewhere (Colvin et al 2012;Adam et al 2015). Virus symptoms have proved difficult to differentiate from other biotic and abiotic stresses on the crop, a fact that can be a major hindrance to virus management.…”

Section: Farmer's Knowledge Of Virus Symptoms and Vector Virus Transmissionmentioning

confidence: 57%

Farmer Knowledge in Potato Virus Epidemiology and Control in Kenya

et al. 2020

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Potato is an important food security crop in Kenya. High prevalence of potato viruses is one of the major causes of low potato yields. Implementation of effective virus management strategies requires information on farmers’ perceptions and practices on virus epidemiology and control. To better understand farmers’ knowledge and practices in virus control and set possible pathways for intervention, a household survey involving 147 respondents was conducted in two major potato-growing regions in Kenya. Lack of sufficient technical information on potato virus symptoms, vectors and modes of transmission was found to be the major hindrance to farmers’ efforts towards virus control. A spider diagram approach was therefore used to determine the aspect of virus control that required the highest prioritization for immediate intervention by policy makers. Use of virus-resistant cultivars was found to require the most urgent attention compared to other aspects of virus control and was expected to have greater impact in lowering virus prevalence. This study showed that enhancing farmer knowledge needs to be prioritised as this is a key determinant of the success of the virus control strategy to be selected for implementation.

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“…The adoption of a viral disease-resistant crop was also associated with reduced pesticide uses in the field. It eventually resulted in extra income which increased the livelihood status of farmers in terms of children’s education, better nutrition, and medical expenses [ 109 ]. Whiteflies are a crucial pest and require intensive efforts for their control.…”

Section: A Threat To Agriculturementioning

confidence: 99%

Tiny Flies: A Mighty Pest That Threatens Agricultural Productivity—A Case for Next-Generation Control Strategies of Whiteflies

Saurabh

Mishra

Rai

et al. 2021

Insects

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Whiteflies are a group of universally occurring insects that are considered to be a serious pest in their own way for causing both direct and indirect damages to crops. A few of them serve as vectors of plant viruses that are detrimental to the crop in question and cause an actual loss in productivity. A lot of attention is focused on pest control measures under the umbrella of IPM. In this review, we attempt to summarize the existing literature on how and why whiteflies are a serious concern for agriculture and society. We reviewed why there could be a need for fresh insight into the ways and means with which the pest can be combated. Here, we have emphasized next-generation strategies based on macromolecules, i.e., RNA interference and genetic engineering (for the expression of anti-whitefly proteins), as these strategies possess the greatest scope for research and improvement in the future. Recent scientific efforts based on nanotechnology and genome editing, which seem to offer great potential for whitefly/crop pest control, have been discussed. Comprehensive apprehensions related to obstacles in the path of taking lab-ready technologies into the farmers’ field have also been highlighted. Although the use of RNAi, GM crops, nanotechnologies, for the control of whiteflies needs to be evaluated in the field, there is an emerging range of possible applications with promising prospects for the control of these tiny flies that are mighty pests.

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Socio-Economic and Scientific Impact Created by Whitefly-Transmitted, Plant-Virus Disease Resistant Tomato Varieties in Southern India

Cited by 8 publications

References 12 publications

Farmers' perceptions and management of plant viruses in vegetables and legumes in tropical and subtropical Asia

Farmers' perceptions and management of plant viruses in vegetables and legumes in tropical and subtropical Asia

Farmer Knowledge in Potato Virus Epidemiology and Control in Kenya

Tiny Flies: A Mighty Pest That Threatens Agricultural Productivity—A Case for Next-Generation Control Strategies of Whiteflies

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