Ação “In Vitro” De Extratos Vegetais Sobre Colletotrichum Acutatum, Alternaria Solani E Sclerotium Rolfsii

Domingues, Ricardo José; Souza, J. D. F. de; Töfoli, Jesus Guerino; Matheus, Dácio Roberto

doi:10.1590/1808-1657v76p6432009

Cited by 7 publications

(1 citation statement)

References 7 publications

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“…Difenoconazole is a systemic fungicide that has demonstrated a good performance in the control of the black ower (Colletotrichum acutatum Simmonds) in strawberry plants (Domingues et al 2001). The application of this fungicide is mainly by foliar spray and, in Brazil, the MRL level is 0.5 mg Kg − 1 (ANVISA 2021b).…”

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confidence: 99%

Abamectin and difenoconazole monitoring in strawberry flowers and pollen sampled from Tetragonisca angustula (Latreille) (Hymenoptera: Apidae) hives located in crop vicinities

Burgarelli

Santos

Prado

et al. 2023

Environ Sci Pollut Res

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The increase of agricultural productivity associated with the emergence and the extensive use of agrochemicals is undeniable. However, the harmful effects, were laid aside in the rst moment. Strong evidence indicates that the rising use of agrochemicals is one of the factors associated with the decreasing of pollinating insects, such as bees. The present work aims the determination of the insecticide abamectin (ABA) and the fungicide difenoconazole (DIF) in strawberry owers (Fragaria x ananassa DUCH.) and pollen sampled from beehives of the stingless bee Tetragonisca angustula Latreille (Hymenoptera: Apidae) located nearby strawberry elds. For analysis, QuEChERS method was optimized, and analytical performance and determination of the two agrochemicals were veri ed using LC-MS/MS considering validation parameters as linearity (0.5 to 1500 µgL − 1 ), precision (> 80%), and accuracy (< 20). Thus, the method was applied in owers and pollen sampled from eld samples from three campaigns. While abamectin was not detected, the systemic fungicide difenoconazole was detected in almost all owers and pollen samples. The results were then discussed mainly according to difenoconazole application and transport to colonies to estimate a preliminary environmental risk assessment considering exposure rates and toxicity data from the literature.

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Section: Introductionmentioning

confidence: 99%

Abamectin and difenoconazole monitoring in strawberry flowers and pollen sampled from Tetragonisca angustula (Latreille) (Hymenoptera: Apidae) hives located in crop vicinities

Burgarelli

Santos

Prado

et al. 2023

Environ Sci Pollut Res

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Natural Pesticidome Replacing Conventional Pesticides

Hansen¹

2013

OMICS Applications in Crop Science

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Indução de resistência no manejo da queima das folhas do inhame

et al. 2020

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RESUMO O objetivo do presente trabalho foi avaliar o efeito do extrato de Allamanda blanchetti (Ab) e do indutor de resistência acibenzolar-S-metil (ASM) no controle de Curvularia eragrostidis e na indução de mecanismos de resistência em mudas de inhame cv. São Tomé (Dioscorea alata). O isolado de C. eragrostidis foi obtido a partir de folhas de inhame com sintomas da doença. Crescimento micelial e esporulação do fungo foram avaliados por meio da adição dos tratamentos [extrato de A. blanchetti 10, 100, 500 e 1000 ppm, ASM (200 mg.L-1), fungicida Mancozebe (200 g.ha-1) e testemunha composta por água destilada] ao meio BDA. Em casa de vegetação, mudas com 60 dias de idade foram pulverizadas com os tratamentos em ambas as faces da folha até o ponto de escorrimento, n os intervalos de 0, 24, 48, 96 e 192 h, seguindo-se a pulverização com suspensão de esporos (1x105 conídios.mL-1). A atividade das enzimas peroxidase, fenilalanina amônia liase (FAL) e β-1,3-glucanase foram analisadas em relação ao tempo de aplicação dos tratamentos. Não houve ação fungitóxica in vitro dos tratamentos a C. eragrostidis. O extrato de Ab e o ASM reduziram a incidência e a severidade da doença, bem como promoveram o aumento na atividade das enzimas peroxidases, FAL e β-1,3-glucanase, quando aplicados antes da inoculação com o patógeno. Estes resultados indicam o potencial de A. blanchetti no controle de C. eragrostidis em plantas de inhame pela ativação de mecanismos de defesa.

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Ação “In Vitro” De Extratos Vegetais Sobre Colletotrichum Acutatum, Alternaria Solani E Sclerotium Rolfsii

Cited by 7 publications

References 7 publications

Abamectin and difenoconazole monitoring in strawberry flowers and pollen sampled from Tetragonisca angustula (Latreille) (Hymenoptera: Apidae) hives located in crop vicinities

Abamectin and difenoconazole monitoring in strawberry flowers and pollen sampled from Tetragonisca angustula (Latreille) (Hymenoptera: Apidae) hives located in crop vicinities

Natural Pesticidome Replacing Conventional Pesticides

Indução de resistência no manejo da queima das folhas do inhame

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