Dynamics of plant mosaic disease propagation and the usefulness of roguing as an alternative biological control

Rakshit, Nabyendu; Basir, Fahad Al; Banerjee, Arnab

doi:10.1016/j.ecocom.2019.01.001

Cited by 15 publications

(7 citation statements)

References 29 publications

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“…The model with periodic environment and pulse roguing (Gao et al 2016 ) showed when the infection rate is high it may be impossible to eradicate the disease by simply roguing, that increasing the planting rate is bad for disease control and that when compared to impulsive control, where impulsive control refers to the implementation of periodic replanting of healthy plants or removing infected plants at a critical time, continuous control may overestimate infectious risk. Rakshits’ et al ( 2019 ) model is focused on mosaic disease and its’ structure is similar to the other models mentioned here. However, in this case the model analyses how impulsive periodic roguing impacts the level of control obtained.…”

Section: Modelling Approaches For the Surveillance Detection And Cont...mentioning

confidence: 74%

“…A set of compartmental differential equation models focusing on vegetatively propagated virus diseases and mosaic disease looked at the use of roguing (Chan and Jeger 1994 ), continuous cultural control (i.e. replanting and roguing) with a time delay due to disease latent period (Zhonghua and Yaohong 2014 ), discrete cultural control (Luo et al 2015 ), pulse roguing with and without a periodic environment (Gao et al 2016 ; Rakshit et al 2019 ), and a mixture of insecticide/roguing control (Al Basir et al 2017 ; Bokil et al 2019 ).…”

Section: Modelling Approaches For the Surveillance Detection And Cont...mentioning

confidence: 99%

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Modelling cassava production and pest management under biotic and abiotic constraints

et al. 2021

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Key message We summarise modelling studies of the most economically important cassava diseases and arthropods, highlighting research gaps where modelling can contribute to the better management of these in the areas of surveillance, control, and host-pest dynamics understanding the effects of climate change and future challenges in modelling. Abstract For over 30 years, experimental and theoretical studies have sought to better understand the epidemiology of cassava diseases and arthropods that affect production and lead to considerable yield loss, to detect and control them more effectively. In this review, we consider the contribution of modelling studies to that understanding. We summarise studies of the most economically important cassava pests, including cassava mosaic disease, cassava brown streak disease, the cassava mealybug, and the cassava green mite. We focus on conceptual models of system dynamics rather than statistical methods. Through our analysis we identified areas where modelling has contributed and areas where modelling can improve and further contribute. Firstly, we identify research challenges in the modelling developed for the surveillance, detection and control of cassava pests, and propose approaches to overcome these. We then look at the contributions that modelling has accomplished in the understanding of the interaction and dynamics of cassava and its’ pests, highlighting success stories and areas where improvement is needed. Thirdly, we look at the possibility that novel modelling applications can achieve to provide insights into the impacts and uncertainties of climate change. Finally, we identify research gaps, challenges, and opportunities where modelling can develop and contribute for the management of cassava pests, highlighting the recent advances in understanding molecular mechanisms of plant defence.

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Section: Modelling Approaches For the Surveillance Detection And Cont...mentioning

confidence: 74%

Section: Modelling Approaches For the Surveillance Detection And Cont...mentioning

confidence: 99%

Modelling cassava production and pest management under biotic and abiotic constraints

et al. 2021

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“…Recently, impulsive differential equations have been employed as the mathematical models for many real problems including pest control [16,[28][29][30], infectious diseases control, and drug administration [31]. Moreover, various plant disease models with impulsive control have been developed and studied [17][18][19][20][32][33][34]. In [17], the authors proposed a mathematical model for plant population which aims to eradicate infected plants or maintain the number of infected plants below the economic threshold.…”

Section: Introductionmentioning

confidence: 99%

“…In [18,19], the plant disease models with impulsive cultural strategies were developed and analyzed, and the main results reveal that the plant disease could be eradicated or the number of infected plants could be maintained below the economic threshold by choosing proper control frequency and intensity. We note that those modelling methods have been developed and extended in various references [20,[32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a High-Dimensional Mathematical Model for Plant Virus Transmission with Continuous and Impulsive Roguing Control

Qiu

Tang

2021

Discrete Dynamics in Nature and Society

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Roguing and replanting are the most common strategies to control plant diseases and pests. How to build the mathematical models of plant virus transmission and consider the impact of roguing and replanting strategies on plant virus eradication is of great practical significance. In the present paper, we propose the mathematical models for plant virus transmission with continuous and impulsive roguing control. For the model with continuous control strategies, the threshold values for the existences and stabilities of multiple equilibria have been given, and the effect of roguing strategies on the threshold values is also addressed. Furthermore, the model with impulsive roguing control tactics is proposed, and the existence and stability of the plant-only and disease-free periodic solutions of the model are investigated by calculating several threshold values. Moreover, when selecting the design control strategy to minimize the threshold, we systematically analyze the existence of the optimal times of roguing infected plants within a replanting cycle, which is of great significance to the design and optimization of the prevention and control strategy of plant virus transmission. Finally, numerical investigations are given to reveal the main conclusions, and the biological implications of the main results are briefly discussed in the last section.

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“…Although roguing diseased plants is a simple and available technique for disease management (Davis et al ., 2005), its performance for BBTD management in smallholder systems remains largely untested. Effective roguing needs reliable disease detection, timely removal, and measures to minimize further contamination during the process (Magee, 1927; Rakshit et al ., 2019). In Benin, Abiola et al .…”

Section: Introductionmentioning

confidence: 99%

The effectiveness of consistent roguing in managing banana bunchy top disease in smallholder production in Africa

Omondi

Soko²,

Nduwimana³

et al. 2020

Plant Pathology

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The removal of infected individuals is a common practice in the management of plant disease outbreaks. It minimizes the contact between healthy individuals and inoculum sources by reducing the infectious window of contaminated individuals. This requires early detection and consistent removal at landscape scale. Roguing of mats with symptoms of banana bunchy top disease (BBTD) in Cavendish banana production systems has been tested in Australia, using trained personnel, but has never been tested in smallholder systems. We studied the effectiveness of long‐term consistent roguing in prolonging the productivity of banana orchards under smallholder farming systems in highland banana and plantain dominated production systems in Africa. We assessed the possibility of low‐risk seed sourcing from the managed plots. Roguing reduced BBTD incidence to 2% in managed farmer fields and to 10% in experimental field plots, while a nonmanaged field eventually collapsed in the same period. With roguing, new infections decreased monthly compared to an exponential increase in a nonmanaged field. The emergence of new infections in both managed and nonmanaged farms followed a seasonal cycle. BBTD managed plots were a source of low‐risk seed for replacing the rogued mats in the same fields, but perhaps not safe for use in nonendemic areas. We conclude that it is possible for smallholder farmers to recover and maintain banana productivity with rigorous roguing, which would entail early identification of symptoms and early removal of diseased mats. Studies are needed on the intensity of roguing under different disease and production conditions.

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Dynamics of plant mosaic disease propagation and the usefulness of roguing as an alternative biological control

Cited by 15 publications

References 29 publications

Modelling cassava production and pest management under biotic and abiotic constraints

Modelling cassava production and pest management under biotic and abiotic constraints

Analysis of a High-Dimensional Mathematical Model for Plant Virus Transmission with Continuous and Impulsive Roguing Control

The effectiveness of consistent roguing in managing banana bunchy top disease in smallholder production in Africa

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