Modeling the effects of insects and insecticides on agricultural crops with NSFD method

Misra, Arvind; Jha, Navnit; Patel, Rahul

doi:10.1007/s12190-019-01314-6

Cited by 15 publications

(9 citation statements)

References 22 publications

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“…Therefore, it is assumed that the amount of insecticides used are proportional to the density of insects. The computational mathematical model assessed the effects of insects and insecticides on crop production [31,32]. Nevertheless, during our review of the literature on models, we did not find a dynamic model of interaction between crop damage and desert locust attacks.…”

Section: Introductionmentioning

confidence: 98%

Modelling the Impacts of Early Intervention on Desert Locust Outbreak Prevention

Mamo

Bedane

2021

Journal of Applied Mathematics

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To preserve crop production losses, monitoring of desert locust attacks is a significant feature of agriculture. In this paper, a mathematical model was formulated and analyzed to protect crops against desert locust attack via early intervention tactics. We consider a triple intervention approach, namely, proaction, reaction, and outbreak prevention. The model integrates a stage-structured locust population, logistics-based crop biomass, and blended early intervention via pesticide spray. We assume that the amount of pesticide spray is proportional to the density of the locust population in the infested area. Conventional short residual pesticides within ultralow volume formulation and equipment control operations are considered. The trivial and locust-free equilibrium of the model is unstable, whereas the interior equilibrium is asymptotically stable. Numerical simulations validate the theoretical results of the model. In the absence of intervention measures, desert locust losses are approximately 71% of expected crop production. The model projection shows that effective proactive early intervention on hopper stage locust contained locust infestation and subdued public health and environmental hazards. Relevant and up-to-date combined early interventions control desert locust aggression and crop production losses.

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Section: Introductionmentioning

confidence: 98%

Modelling the Impacts of Early Intervention on Desert Locust Outbreak Prevention

Mamo

Bedane

2021

Journal of Applied Mathematics

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“…To investigate the role of the awareness program in the control of insect pests, mathematical models are implied [34,35,36]. A dynamic model to analyzing the effects of insects and insecticides on crops has recently developed [37,38].…”

Section: Introductionmentioning

confidence: 99%

Modelling the effect of desert locust infestation on crop production with intervention measures

Mamo

Bedane

2021

Heliyon

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The Desert Locust, Schistocerca gregaria(Forskål), is the most devastating migratory pest in the world. The Desert Locust persists as the principal threat to food security in the infested region and beyond. In the inadequacy of reliable and efficient prevention and control measures, strategies for controlling and mitigating the trouble of the Desert Locust are focused on non-risk-free interventions such as chemical pesticides. We formulated and analyzed a mathematical model to assess the impact of this devastating pest on crop production. The theoretical analysis of the model shows that the trivial and locust free equilibriums are unstable, whereas interior equilibrium is asymptotically stable if crop growth rate r is greater than a maturity rate σ Numerical simulations of the model using the baseline parametric values are consistent with theoretical analysis. The conventional scenario projections for crop production (based on the baseline levels of anti-Desert Locust interventions considered in the study) increase by 70:44%ð2663:26Þkg per hectare) if the low depletion pesticide measures performed are maintained proportionally with locust population. This study notes that high-level depletion of the chemical pesticide spray measures could lead to devastating crop losses (similar to those projections before the onset of the pesticide spray) and severe human health and environmental risks. At a baseline harvesting coverage could shelter 44:43kg to 1176:82kg per hectare of mature crops. Combining early harvesting and low depletion chemical pesticide with ultra-low volume (ULV) spray devices and formulation could mitigate and eliminate Desert Locust infestation.

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“…Alguns insetos atacam as folhas das lavouras e as danificam, comprometendo a produção de fotoassimilados, o que acaba reduzindo a produção agrícola; outros são responsáveis por danificar os frutos e as raízes, o que também afeta a produção das culturas (Misra et al, 2020); insetos podem ainda causar prejuízos no armazenamento de grãos (Bhavya et al, 2020) e na pós-colheita de produtos agrícolas (Saeed et al, 2020).…”

Section: Introductionunclassified

Bactrocera carambolae Drew & Hancock (Diptera:Tephritidae): Riscos para a Fruticultura Brasileira

Cartaxo

Lopes

Gonzaga

et al. 2020

RSD

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Os insetos-praga representam uma importante fonte de perdas agrícolas em todo o globo. Situação que é maximizada pela introdução de espécies fora da sua área natural de ocorrência, levando os países a elaborarem listas de quarentena a fim de proteger sua produção interna e não comprometerem suas exportações de produtos agrícolas. Nesse sentido, essa pesquisa busca revisar e analisar o potencial invasivo e riscos da Bactrocera carambolae Drew & Hancock 1994 (Diptera:Tephritidae), importante praga da fruticultura mundial e praga quarentenária presente no Brasil. Bactrocera carambolae é uma espécie de mosca-das-frutas oriunda do sudeste asiático e que infesta uma grande diversidade de frutíferas, tanto nativas, como de interesse econômico. No Brasil, seu registro inicial é datado de 1996 no estado do Amapá, e atualmente além desse estado, foi reportada nos estados do Pará e Roraima. No país já infesta 21 hospedeiros, entre eles acerola, carambola, caju, goiaba, manga e tangerina, e apresenta potencial de adentrar mercados agrícolas importantes, como o polo de fruticultura irrigada do Vale do São Francisco. Bactrocera carambolae representa sérios riscos para a fruticultura brasileira, principalmente pela potencial exclusão de mercados para exportação de frutas. Dessa forma, ações de controle e erradicação dessa praga precisam ser mantidas e aperfeiçoadas, buscando-se evitar severos danos socioeconômicos para a cadeia produtiva de frutas no Brasil.

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Modeling the effects of insects and insecticides on agricultural crops with NSFD method

Cited by 15 publications

References 22 publications

Modelling the Impacts of Early Intervention on Desert Locust Outbreak Prevention

Modelling the Impacts of Early Intervention on Desert Locust Outbreak Prevention

Modelling the effect of desert locust infestation on crop production with intervention measures

Bactrocera carambolae Drew & Hancock (Diptera:Tephritidae): Riscos para a Fruticultura Brasileira

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