Fungo Metarhizium anisopliae e o controle de Frankliniella occidentalis em alface hidropônico

Lopes, Rogério Biaggioni; Alves, Sérgio Batista; Tamai, M. A.

doi:10.1590/s0103-90162000000200007

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Other insect groups, such as thrips and aphids, presented greater susceptibility to B. bassiana and M. anisopliae (Fournier & Brodeur, 2000;Lopes et al, 2000). Metarhizium anisopliae (isolate 1104) demonstrated an efficiency of 60%, six days after the first spray, on Frankliniella occidentalis (Thysanoptera: Thripidae) in hydroponic system trials (Lopes et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Hydrogen Peroxide for Insect and Algae Control in a Lettuce Hydroponic Environment

Caixeta¹,

Mata²,

Curvêlo³

et al. 2018

JAS

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Insects and algae demonstrate adaptability in hydroponic environments. Algae attract flies, Bradysia spp. (Diptera: Sciaridae) and Scatella stagnalis (Diptera: Ephydridae), called fungus gnats and shore fly, respectively. Flies feed on algae, damaging seedlings radicellae, and may transmit pathogens to lettuce plants. Little information on the management of flies and algae is known. A paradox in the face of the expansion of hydroponics. The objective was to evaluate the potential of hydrogen peroxide (H 2 O 2 ) as an insecticide and algaecide agent. Entomopathogenic fungi were also evaluated as an alternative control to flies. The experiment was conducted in a commercial hydroponic system under a randomized complete block design with 5 treatments and 4 replicates. The treatments, sprayed on the phenolic foam plates, immediately after lettuce seed deposition, were: H 2 O 2 , Beauveria bassiana, Metarhizium anisopliae, Spinosyn and water, as control. The quality of the lettuce seedlings (cv. Brida), the presence of flies and algae evolution in the phenolic foam plates were recorded daily. H 2 O 2 and Spinosyn affected lettuce seed germination, but were able to reduce adult flies on the phenolic foam cells. The highest number of larvae was observed with both fungi, and only water, compared to H 2 O 2 . No larvae were found in Spinosyn sprayed phenolic foam cells. However, lettuce seedlings from Spinosyn sprayed plates were those with lower fresh weight. H 2 O 2 severely retained algae infestation in phenolic foam cells over a 15-day observation period. The present work demonstrates the potential that H 2 O 2 can play as an insecticidal and algaecide agent in hydroponic environments.

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Section: Resultsmentioning

confidence: 99%

“…other hand, pathogens, insects and algae can occur in agricultural greenhouses, demonstrating adaptability to this type of environment so simplified from the biological point of view (Lopes et al, 2000;Takikawa et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Peroxide for Insect and Algae Control in a Lettuce Hydroponic Environment

Caixeta¹,

Mata²,

Curvêlo³

et al. 2018

JAS

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show abstract

“…Pode-se fazer até três pulverizações. Para tripes a utilização do bioinseticida Metarhizium anisopliae pode alcançar eficiência de 60% seis dias após a pulverização (LOPES et al, 2000).…”

Section: Controle Alternativounclassified

Cultura Da Alface

2022

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“…Among the biological control agents, the fungus M. anisopliae shows a great potential for the thrips control. In laboratory conditions, the strain 1037 (Entomology Department of ESALQ/ USP) was selected and later used with success for control of F. occidentalis in commercial production of hydroponic lettuce in greenhouse (Lopes, 1999;Lopes et al, 2000). The association of selective chemical insectides with entomopathogenic fungi could provide a more effective control of thrips.…”

Section: Termos Para Indexação: Controle Químico Controle Microbiolómentioning

confidence: 99%

Occurence of thrips on Niagara table grape and its control with the insecticides thiacloprid and methiocarb associated with Metarhizium anisopliae

Lopes¹,

Tamai²,

Alves³

et al. 2002

Rev. Bras. Frutic.

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Thrips are reported as important pests on table grapes in United States and several countries of Europe. Damage caused by thrips, particulary Frankliniella occidentalis, was observed on niagara table grape crop in Limeira-SP, Brazil. During the blooming period, high thrips densities were observed feeding on pollen and small berries. The symptoms left were more visible after the development of the berries and were characterized by dark scars and suberized surface on berries, sometimes causing the berry to crack, and the seed to prolapse. The effect of insecticides thiacloprid or methiocarb, associated or not with the entomopathogenic fungus Metarhizium anisopliae were evaluated during the blooming period. For evaluation of thrips damage on fruits, the treatments were applied three additional times, 7, 14 and 21 days after the first application. The treatments were: a) M. anisopliae (strain 1037) 1x10(7) conidia/mL; b) thiacloprid 20mL/100L; c-d) methiocarb 100 and 150mL/100L; e) methiocarb 100mL/100L + M. anisopliae 1x10(7) conidia/mL. Only methiocarb, associated or not with the fungus, was effective in reducing thrips infestation, and no phytotoxic damage was observed. The efficiency of methiocarb 150mL/100L and the insecticide associated with the fungus for the control of the thrips population was 84.2 and 95.5%, respectively. In both cases, there was a reduction of approximately 70% in the number of berries with scars symptoms. For control of thrips on table grapes, chemical insecticides associated or not with M. anisopliae should be applied during the blooming period of the crop.

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Fungo Metarhizium anisopliae e o controle de Frankliniella occidentalis em alface hidropônico

Cited by 8 publications

References 9 publications

Hydrogen Peroxide for Insect and Algae Control in a Lettuce Hydroponic Environment

Hydrogen Peroxide for Insect and Algae Control in a Lettuce Hydroponic Environment

Cultura Da Alface

Occurence of thrips on Niagara table grape and its control with the insecticides thiacloprid and methiocarb associated with Metarhizium anisopliae

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