Insect Pests of Cotton

Rajendran, T. P.; Birah, Ajanta; Burange, P. S.

doi:10.1007/978-981-10-8687-8_11

Cited by 20 publications

(13 citation statements)

References 37 publications

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“…Within insects, three groups dominated the costs: Erebidae (US$ 126 billion), Cerambycidae (longhorn beetles; a known pest impacting forestries, agricultural and forestry pests; US$ 112 billion), and Noctuidae (owlet moths; US$ 106 billion). As voracious defoliators, moth caterpillars are major pests in forests (Haynes et al 2014), and are also great threats to production of cotton (Rajendran et al 2018) and food (Vreysen et al 2007(Vreysen et al , 2016. The majority of costs in the present study were attributed to direct resource damages or losses, which clearly emanate principally from agricultural and forestry enterprises.…”

Section: Discussionmentioning

confidence: 66%

The magnitude, diversity, and distribution of the economic costs of invasive terrestrial invertebrates worldwide

Renault

Angulo

Cuthbert

et al. 2021

Preprint

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Invasive species are a major driver of global biodiversity loss, hampering conservation efforts and disrupting ecosystem functions and services. While accumulating evidence has documented ecological impacts of invasive species across major geographic regions, habitat types and taxonomic groups, appraisals for economic costs have remained relatively sparse. This has hindered effective cost-benefit analyses that inform expenditure on management interventions to prevent, control, and eradicate invasive species. Terrestrial invertebrates are a particularly pervasive and damaging group of invaders, with many species compromising primary economic sectors such as agriculture and health. The present study provides synthesised quantifications of economic costs caused by invasive terrestrial invertebrates on the global scale and across a range of descriptors, using the InvaCost database. Invasive terrestrial invertebrates reportedly cost the global economy US$ 1.26 trillion over the investigated period (1960–2020), mostly due to invasive insects (> 90%). Overall, costs were not equally distributed geographically, with North America (76%) reporting the greatest costs, with far lower costs reported in Europe (4%) Asia (4%), Africa (3%), South America (2%), and Oceania (1%). These costs mostly resulted from direct resource damages and losses (76%), particularly to agriculture and forestry; relatively little (4%) was invested in management. A minority of monetary costs was directly observed (43%), but costs were mostly sourced from highly reliable estimates (58%). Economic costs displayed an increasing trend with time, with an average annual cost of US$ 20.67 billion since 1960, but reporting lags reduced costs in recent years. The massive global economic costs of terrestrial invertebrates require urgent consideration and investment by policymakers and managers, in order to prevent and remediate the economic and ecological impacts of these and other invasive species groups.

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Section: Discussionmentioning

confidence: 66%

The magnitude, diversity, and distribution of the economic costs of invasive terrestrial invertebrates worldwide

Renault

Angulo

Cuthbert

et al. 2021

Preprint

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“…E o estádio F1 foi o mais afetado pelo nível de desfolha em ambos os sistemas de cultivos estudados. final (CALAFIORI et al, 1986;RAJENDRAN et al, 2018).…”

Section: Resultsunclassified

Impacto da Desfolha Artificial no Desenvolvimento, Produtividade e Qualidade de Fibra do Algodoeiro (Gossypium hirsutum L.) Convencional e Adensado

et al. 2022

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A capacidade do algodoeiro de se recuperar após uma desfolha se faz em função do nível de redução da área foliar, estágio de desenvolvimento da planta em que ocorrer a injúria, condições climáticas e práticas do sistema de cultivo. O objetivo deste estudo foi avaliar os efeitos da desfolha no desenvolvimento, produtividade e qualidade de fibra do algodoeiro, nos sistemas de espaçamentos adensado e convencional. Para isso, conduziu-se experimentos em condições de campo, em Dourados (MS), utilizando-se a cultivar NuOpal RR®, em delineamento de blocos ao acaso (com parcelas subdivididas) e quatro repetições em dois sistemas de cultivo (adensado e convencional). Os tratamentos constituíram-se de cinco fases de desenvolvimento da cultura: V3, B1, F1, F5 e C1, (de acordo com a escala de Marur e Ruano (2001) e quatro níveis de desfolhamento artificial (0%, 33%, 66% e 99% da área foliar). O efeito da desfolha nos índices de produtividade e qualidade de fibras foi dependente do estádio do fenológico em que a cultura se encontrava independente do sistema de cultivo estudado. Já quando as plantas estavam nos estádios B1 e F1 e sofreram desfolha de 99%, este afetou os índices de qualidade de fibras, enquanto a redução de área foliar no estádio C1 não afetou os índices de qualidade e produtividade do algodoeiro. Palavras chave: Área Foliar. Dano. Sistemas de Cultivo. Algodão. Abstract The ability of the cotton plant to recover after defoliation is a function of the level of reduction of the leaf area, stage of development of the plant in which injury occurs, climatic conditions and practices of the cultivation system. The objective of this study was to evaluate the behavior of cotton submitted to different levels and times of defoliation in systems of conventional and narrow row cultivation. Experiments were conducted in field conditions, in Dourados (MS), using the cultivar NuOpal RR® in a randomized block design (with subdivided plots) and four replications in two cultivation systems (narrow row and conventional). The treatments consisted of five stages of crop development: V3, B1, F1, F5 and C1, (according to the scale of Marur & Ruano (2001) and four levels of artificial defoliation (0%, 33%, 66 % and 99% of the leaf area artificially eliminated.) The effect of defoliation on the indexes productivity and fiber quality depends on the phenological stage in which the culture was, independent of the cultivation system studied. When the plants were in stages B1 and F1 and suffered defoliation of 99%, this affected the fiber quality indexes, while the reduction of leaf area in the C1 stage did not affect the quality and productivity indexes of the cotton. Keywords: Leaf Area. Damage. Cultivation Systems. Cotton.

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“…Finally, as A. binocularis is considered one of the main pests of A. occidentale in Brazil, 36 sex pheromone-baited traps could be used in integrated pest management practices. Given the invasive potential of the Gelechiidae pest species, exemplified by Phthorimaea operculella, 37 Sitotroga cerealella, 38 Pectinophora gossypiella 39 and by the most recent rapid expansion of Tuta absoluta, 40,41 sex pheromones could be used for the detection and monitoring of A. binocularis in other countries, especially those regarded as the largest cashew producers, including India, Vietnam and Western Africa countries. 3 However, as our investigation essentially covers the identification of pheromone compounds produced by A. binocularis, further studies, including the minimum attractant ratio of components and the type and position of traps that are optimally attractive under field conditions, will be required to determine if both components are necessary for field attractiveness.…”

Section: Discussionmentioning

confidence: 99%

Identification of Δ6‐unsaturated, monoenyl type I pheromone compounds from the cashew stem borer Anthistarcha binocularis (Lepidoptera: Gelechiidae)

Soares

França

Triana

et al. 2019

Pest Management Science

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BACKGROUND The cashew stem borer Anthistarcha binocularis (Meyrick) is a major pest in cashew orchards in Brazil. The damage caused by the larvae results in economic losses, and the available chemical control is not suitable because of the endophytic nature of A. binocularis. The identification of the A. binocularis sex pheromone could provide novel applications for the detection and monitoring of this species. RESULTS Two compounds from female sex gland extracts elicited electrophysiological responses on male antennae. They were identified as dodec‐6‐en‐1‐ol and dodec‐6‐en‐1‐yl acetate by gas chromatography–mass spectrometry. E/Z stereoisomers of both compounds were synthesized, and the electroantennograms for the synthetic compounds showed the strongest responses for the (E)‐stereoisomers of the alcohol and acetate. In a field trial, the E6‐12:OH/E6‐12:OAc mixture attracted male A. binocularis, whereas the Z6‐12:OH/Z6‐12:OAc mixture attracted no specimens. CONCLUSIONS The bioactive compounds from the sex pheromone of A. binocularis have been identified as a mixture of two previously unidentified pheromone compounds: E6‐12:OH and E6‐12:OAc. The mixture of both compounds was attractive to males in preliminary field experiments, and this study is the first report of Δ6‐unsaturated monoenyl pheromone compounds in Lepidoptera. © 2019 Society of Chemical Industry

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Insect Pests of Cotton

Cited by 20 publications

References 37 publications

The magnitude, diversity, and distribution of the economic costs of invasive terrestrial invertebrates worldwide

The magnitude, diversity, and distribution of the economic costs of invasive terrestrial invertebrates worldwide

Impacto da Desfolha Artificial no Desenvolvimento, Produtividade e Qualidade de Fibra do Algodoeiro (Gossypium hirsutum L.) Convencional e Adensado

Identification of Δ6‐unsaturated, monoenyl type I pheromone compounds from the cashew stem borer Anthistarcha binocularis (Lepidoptera: Gelechiidae)

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