Primeiro registro das espécies de cigarrinhas-da-raiz da cana-de-açúcar Mahanarva spectabilis (Distant) e Mahanarva liturata (Le Peletier &amp; Serville) atacando canaviais na região de Goianésia (GO), Brasil

Alves, R. T.; Carvalho, Gervásio Silva

doi:10.1590/s1808-16572014000100016

Cited by 10 publications

(6 citation statements)

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“…However, it was recorded only once attacking sugarcane fields in Goiás together with Mahanarva liturata (Le Peletier and Serville, 1825). This is thus the first record of these species in sugarcane in Brazil (PEIXOTO et al, 2009;AUAD et al, 2011;ALVES;CARVALHO, 2014).…”

Section: Introductionmentioning

confidence: 76%

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Sugarcane froghoppers in northeast Brazil

et al. 2020

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Froghoppers (Mahanarva spp.) are pests of great economic importance for various regions of Brazil. Many species have a variation in the alar pattern, a parameter that often leads to incorrect identification. We collected froghopper adults in sugarcane fields in the municipalities of Murici and Maceió, in Alagoas, Lagoa de Itaenga and Camutanga, in Pernambuco, São Raimundo das Mangabeiras, in Maranhão, and União and Boa Hora, in the Teresina microregion in Piauí. The froghoppers were assembled and identified and are representatives of three species: M. spectabilis, M. fimbriolata, and M. posticata. This is the first record of M. spectabilis attacking sugarcane fields in the states of Piauí and Maranhão, Brazil. We found the species M. posticata and M. fimbriolata in the sugarcane fields of Alagoas and only M. posticata in Pernambuco.

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Section: Introductionmentioning

confidence: 76%

“…It causes damage to sugarcane. There is only one record in Brazil (AUAD et al, 2007;AUAD et al, 2009;ALVES;CARVALHO, 2014).…”

Section: Introductionmentioning

confidence: 99%

Sugarcane froghoppers in northeast Brazil

et al. 2020

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“…M. fimbriolata can cause losses of up to 40% in production 6 at various stages of development during the rainy season (November to March) in Southeast of Brazil. Nymphs extract water and nutrients from the roots, causing stress that predisposes plants to steam-cracking and deterioration, while adults feed and inject toxins into leaf which cause necrosis of the leaves 7 . Furthermore, these damages change the physical quality of sugarcane used as raw material in the industry, by reducing the sugar content in stems and increasing the fiber content 8 .…”

Section: Introductionmentioning

confidence: 99%

Monitoring of the field application of Metarhizium anisopliae in Brazil revealed high molecular diversity of Metarhizium spp in insects, soil and sugarcane roots

Iwanicki

Alves‐Pereira

Botelho

et al. 2019

Sci Rep

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The use of Metarhizium against sugarcane spittlebugs in Brazil is one of the most successful and long lasting biological control programs using entomopathogenic fungus in the world. However, studies to monitor the fate of this fungus on the sugarcane agroecosystem are rare, especially with respect to its persistence, efficacy in pest control and impact on the local populations of Metarhizium. The present study aimed at documenting the efficacy and persistence of M. anisopliae strain ESALQ1604 in a sugarcane field by using microsatellite molecular markers. The species diversity of Metarhizium was characterized in insects, soil and sugarcane roots in a sprayed and an unsprayed plot. Although the infection rates were not very high (≤ 50%), the applied strain was recovered from spittlebugs after 7, 30 and 60 days’ post-application, but accounted for only 50%, 50% and 70.5% of all insects killed by M. anisopliae, respectively. All haplotypes from spittlebug were associated with a single subclade of M. anisopliae. The highest haplotype diversity was found in soil (h = 0.989) and in the smallest in spittlebug (h = 0.779). Metarhizium robertsii, M. anisopliae, M. brunneum; one taxonomically unassigned lineage was found in soil and only M. brunneum and M. anisopliae were isolated from roots. This study revealed the great diversity of Metarhizium spp. in the sugarcane agroecosystem and the importance of the local population of M. anisopliae on spittlebugs management.

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“…O aumento na proporção de áreas colhidas de forma mecanizada, sem a queima da palha, onde se situa boa parte dos ovos da cigarrinha, vem favorecendo o aumento desse inseto-praga nos canaviais Carvalho, 2014). Em adição, o aumento da umidade no solo devido ao acúmulo da palha após a colheita vem fazendo com que esse inseto assuma o status de um dos maiores problemas fitossanitários da cana--de-açúcar.…”

Section: Introductionunclassified

Efeitos da fertirrigação sobre a ocorrência e danos de Mahanarva fimbriolata (Stål) (Hemiptera: Cercopidae) em cana-de-açúcar

et al. 2015

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ABSTRACT:Brazil stands out as the world's largest producer of sugarcane and its productivity is closely related to the availability of water and nitrogen during its development and also to the incidence of pest insects. Among the species most harmful to the sugarcane in Brazil, Mahanarva fimbriolata stands out, which has seriously endangered the yields. In this context, the present study aimed to evaluate the effect of the nitrogen fertirrigation on the incidence and damage caused by M. fimbriolata in sugarcane. The experiment was composed of five treatments and four replications in a randomized block design (RBD). The treatments were composed of four doses of N-fertilizer and control (0, 50, 100, 150, 200 kg.ha -1 ) in drip irrigation system. The parameters evaluated were: number of nymphs in the roots, stalk productivity, sugar content, percentage of sugar, total recoverable sugar and the agricultural contribution margin. It was observed that the fertirrigation increases the productivity of stalks and sugar with the increase of nitrogen fertilization by irrigation. The use of 200 kg.ha -1 of N-fertilizer increased the incidence of M. fimbriolata up to the control and economic damage levels. The biggest financial yield was obtained with the dose of 150 kg.ha -1 of N-fertilizer.KEYWORDS: Saccharum sp.; spittlebug; irrigation; nitrogen. RESUMO:O Brasil se destaca como o maior produtor mundial de cana-de-açúcar e sua produtividade está intimamente relacionada à disponibilidade de água e nitrogênio durante seu desenvolvimento e também à incidência de insetos-praga. Dentre as espécies mais nocivas à cana-de-açúcar no Brasil, destaca-se Mahanarva fimbriolata, a qual tem comprometido seriamente sua produtividade. Nesse contexto, o presente trabalho teve como objetivo avaliar o efeito da fertirrigação nitrogenada sobre a incidência e os danos ocasionados por M. fimbriolata em cana-de-açúcar. O experimento foi composto por cinco tratamentos e quatro repetições em delineamento de blocos casualizados (DBC). Os tratamentos foram constituídos por quatro doses de N-fertilizante e controle (0, 50, 100, 150 e 200 kg.ha -1 ) em sistema de irrigação por gotejamento. Os parâmetros avaliados foram: número de ninfas nas raízes, produtividade de colmos (TCH), produtividade de açúcar (TPH), açúcar total recuperável (ATR), pol de cana corrigido (PCC) e margem de contribuição agrícola. Foi observado que a produtividade de colmos e de açúcar aumentou com a adubação nitrogenada por meio da irrigação. O uso de 200 kg.ha -1 de N-fertilizante elevou a incidência de M. fimbriolata até os níveis de controle e dano econômico. O maior rendimento financeiro foi obtido com a dose de 150 kg.ha -1 de N-fertilizante. PALAVRAS-CHAVE:Saccharum sp.; cigarrinha-das-raízes; irrigação; nitrogênio.

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Primeiro registro das espécies de cigarrinhas-da-raiz da cana-de-açúcar Mahanarva spectabilis (Distant) e Mahanarva liturata (Le Peletier & Serville) atacando canaviais na região de Goianésia (GO), Brasil

Cited by 10 publications

References 1 publication

Sugarcane froghoppers in northeast Brazil

Sugarcane froghoppers in northeast Brazil

Monitoring of the field application of Metarhizium anisopliae in Brazil revealed high molecular diversity of Metarhizium spp in insects, soil and sugarcane roots

Efeitos da fertirrigação sobre a ocorrência e danos de Mahanarva fimbriolata (Stål) (Hemiptera: Cercopidae) em cana-de-açúcar

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