Efeito De Adjuvantes Em Associação Com Thiamethoxam 250 Wg E Metarhizium Anisopliae (Metsch.) Sorokin No Controle De Cigarrinha-Da-Raiz Da Cana-De-Açúcar Mahanarva Fimbriolata (Stal, 1854) (Hemiptera; Cercopidae)

Almeida, José Eduardo Marcondes de; Filho, Antonio Batista; Costa, Eduardo Antonio Drolhe da

doi:10.1590/1808-1657v74p1352007

Cited by 5 publications

(5 citation statements)

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“…This indicates that there was low variation in cotton productivity depending on the treatments used. The sugarcane leafhopper is characterized by being an insect that develops in the roots of sugarcane and its damage is associated with sucking the sap of plants and injecting toxic substances present in its saliva, thus reducing the sucrose content and reduction in the thickness of the inter-nodes (Almeida, Batista Filho and Costa, 2022). Greater sugarcane productivity was observed in the treatment with Metarhizium anisopliae (86.8 tons of stalk ha -1 ) (Figure 3A).…”

Section: Resultsmentioning

confidence: 99%

Biological insecticides efficient alternatives for the control of insect pests in agricultural and horticultural crops

Pradebon,

Carvalho,

Sangiovo

et al. 2023

Rev. DELOS

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This work aimed to evaluate the agronomic effectiveness and practicality of microbiological insecticides in cotton, sugar cane, citrus, beans, tomatoes, coffee, wheat, soybeans and maize crops based on bacteria of the genus Pseudomonas fluorescens Pseudomonas chlororaphis and Bacillus thuringiensis, in the control of insect pests. Experiments were carried out to evaluate biological insecticides in each crop individually. Experiments were carried out in each culture in various environments in the states of MT, MS, SP, MG and PR in Brazil. A randomized block design with four replications was used in all the experiments. Agronomic traits, insect pest incidence and insecticide efficiency were evaluated for each of the crops. A heat map was made to understand the efficiency of insecticides in controlling insect pests in each crop. The linear correlation coefficients between the pairs of characters evaluated were calculated. The use of bacteria of the genus Pseudomonas fluorescens, Pseudomonas chlororaphis and Bacillus thuringiensis to control insect pests is a promising alternative for use alone or in combination with pesticides. The use of azadirachtin is effective for controlling mites in cotton, Diaphorina citri in citrus and moth in tomato.

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Section: Resultsmentioning

confidence: 99%

Biological insecticides efficient alternatives for the control of insect pests in agricultural and horticultural crops

Pradebon,

Carvalho,

Sangiovo

et al. 2023

Rev. DELOS

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“…The fourth key sustainable strategy proposed is biological control with microbial fungicides and insecticides via the mass introduction of antagonist or entomopathogenic microorganisms against the pathogens and insect pests associated with the stalk disorders [27,34,38,39,43,45,63]. There are currently 12 commercial microbial fungicide formulations labeled for the management of stalk diseases caused by C. falcatum (N = 1) or T. paradoxa (N = 11), composed of mixtures of the antagonistic Bacillus species Bacillus subtilis, B. pumilus, Bacillus velezensis, Bacillus amyloliquefaciens, and/or Bacillus thuringiensis; a mixture of B. velezensis and Trichoderma harzianum; a mixture of B. amyloliquefaciens, T. harzianum and T. asperellum; and T. harzianum alone [64].…”

Section: Discussionmentioning

confidence: 99%

“…With regard to the spittlebug (M. fimbriolata)-associated disorder, the most significant damage impacting sugarcane yield is excessive budding resulting from the deaths of young shoots due to the injection of toxic substances from the insect's saliva. The insect also induces hydric stress and shoot stunting, as well as decreasing the plants' sucrose content [38,39].…”

Section: Introductionmentioning

confidence: 99%

Dry Rot Caused by the Complex Colletotrichum falcatum and Thielaviopsis paradoxa Emerges as a Key Stalk Disorder in Newly Expanded Sugarcane Plantations from Northwestern São Paulo, Brazil

Silva,

Moreira,

Felizardo

et al. 2023

Agronomy

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Sugarcane dry rot emerged as an important stalk disorder in newly expanded plantations in northwestern São Paulo, Brazil, under the current no-burning fully mechanical harvest policy gradually implemented in the past 20 years. This emergence was probably due to a considerable increase in both pathogen inocula and insect pest populations in sugarcane crop residues kept in the field. In this study, we surveyed the incidence of three stalk-related disorders in commercial sugarcane fields in six municipalities in northwestern São Paulo and the corresponding yield losses. The three stalk-related disorders surveyed were as follows: the red rot disease caused by the fungal pathogen Colletotricum falcatum, the spittlebug-induced shoot stunting, and the stem dry rot, which is associated with the simultaneous infection of C. falcatum and Thielaviopsis paradoxa, the pineapple set rot pathogen. Red rot disease was detected in 88.2% of the fields surveyed, while the spittlebug-induced shoot stunting disorder and the internal stem dry rot were found in 97.1% of the fields. Stem dry rot had the highest incidence and resulted in the highest yield losses. Total sugarcane yield losses were estimated at 20.1%, with an average of 14.2 (±3.8) t·ha−1 per field. The multiple regression model constructed to determine which of the three stem-related disorders contributed the most to total yield losses was not significant. Subsequently, the performance analyses of single-variable polynomial regression models indicated that the simple linear model was the best fit in terms of independently predicting sugarcane yield losses based on each stem-related disorder. Positive and significant correlations were only detected between sugarcane yield losses in t·ha−1 and the incidence of red rot disease or leafhopper-induced shoot stunting. We concluded that the stalk’s internal dry rot, as a disease complex associated with both C. falcatum and T. paradoxa, was the most important disorder in sugarcane fields in the northwest region of São Paulo state. A sustainable pest management program is needed to reduce the impact of all three stalk-associated disorders on regional sugarcane production.

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“…Then, the solution was poured into a coastal sprayer tank with low-flow fan nozzles and a volume of 50 L/ha for spraying. The application was conducted at a height of approximately 50 cm from the ground after counting the insects to allow contact between the biological pesticides with the spittlebug nymphs, the stage most susceptible to the entomopathogenic agent [67].…”

Section: Field Bioassay With Mahanarva Spectabilismentioning

confidence: 99%

Endophytic Capacity of Entomopathogenic Fungi in a Pasture Grass and Their Potential to Control the Spittlebug Mahanarva spectabilis (Hemiptera: Cercopidae)

Campagnani,

Auad,

Maurício

et al. 2024

Agronomy

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Pests in pastures have compromised the production of biomass for feeding livestock herds. Many strategies have been applied to sustainably solve this problem. One viable and innovative technique is the delivery of entomopathogenic fungi through endophytes. Therefore, this study aimed to (i) evaluate the endophytic capacity of two entomopathogenic fungi, Fusarium multiceps UFMGCB 11443 and Metarhizium anisopliae UFMGCB 11444, in Urochloa brizantha [(Hochst. ex A. Rich.) Stapf] (Poaceae) cultivar ‘Marundu’) via foliar inoculation or seed treatment, and (ii) measure their efficiency in controlling Mahanarva spectabilis Distant, 1909 (Hemiptera: Cercopidae) in U. brizantha. In the greenhouse, the fungi colonized the tissues of U. brizantha plants when inoculated via foliar spraying or seed treatment. The fungi F. multiceps and M. anisopliae caused 88% and 97.1% epizootic effects via seed inoculation, respectively, and 100% epizootic effects via foliar inoculation. In the field, the lowest fungal dose of 0.5 kg/ha had the same effect as a fourfold greater dose, with a >86% decrease in insect pest infestation observed. In summary, the fungi F. multiceps and M. anisopliae have endophytic effects and can effectively control M. spectabilis in U. brizantha pastures.

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Efeito De Adjuvantes Em Associação Com Thiamethoxam 250 Wg E Metarhizium Anisopliae (Metsch.) Sorokin No Controle De Cigarrinha-Da-Raiz Da Cana-De-Açúcar Mahanarva Fimbriolata (Stal, 1854) (Hemiptera; Cercopidae)

Cited by 5 publications

References 1 publication

Biological insecticides efficient alternatives for the control of insect pests in agricultural and horticultural crops

Biological insecticides efficient alternatives for the control of insect pests in agricultural and horticultural crops

Dry Rot Caused by the Complex Colletotrichum falcatum and Thielaviopsis paradoxa Emerges as a Key Stalk Disorder in Newly Expanded Sugarcane Plantations from Northwestern São Paulo, Brazil

Endophytic Capacity of Entomopathogenic Fungi in a Pasture Grass and Their Potential to Control the Spittlebug Mahanarva spectabilis (Hemiptera: Cercopidae)

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