Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae.

The toxicological impact of chemical pesticides on fungal entomopathogens and their use in tank-mixing can be directly measured through in vitro compatibility tests. This study reports the in vitro toxicity of eight insecticides, four fungicides and five herbicides in the conidial germination, vegetative growth and conidiation of Metarhizium anisopliae (strain CG 168). A conidial suspension containing the pesticide at recommended field dosage was subjected to constant agitation in a rotary shaker for 3h to simulate a tank mixing. Then, aliquots of each suspension were used to determine conidial germination, vegetative growth and conidiation on potato dextrose agar (PDA). The fungicides difenoconazole (69 mL ha?1), propiconazole (75 mL ha?1), trifloxystrobin (313 g ha?1) and azoxystrobin (56 mL ha?1) were the most harmful products to all biological stages of M. anisopliae and they should not be applied together with this fungus in tank mixing. The insecticides exhibited the least degree of toxicity to this fungal pathogen, whereas the herbicides had the greatest impact on mycelial growth. The agrochemicals compatible with M. anisopliae were the insecticides methyl parathion (240 mL ha?1), thiamethoxam (31 g ha?1), and lambda-cyhalothrin (6.3 mL ha?1) and the herbicides glyphosate (1560 mL ha?1), bentazon (720 mL ha?1), and imazapic+ imazapyr (84 g ha?1). The compatible pesticides could be simultaneously used with this bio-control agent for integrated pest management in rice production systems.

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Main Authors: SILVA, R. A. da, QUINTELA, E. D., MASCARIN, G. M., BARRIGOSSI, J. A. F., LIÃO, L. M.
Other Authors: RODRIGO ALVES DA SILVA, CNPAF; ELIANE DIAS QUINTELA, CNPAF; GABRIEL MOURA MASCARIN, CNPAF; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; LUCIANO MORAES LIÃO, UFG.
Format: Artigo de periódico biblioteca
Language:English
eng
Published: 2013-06-03
Subjects:Arroz, Oryza sativa, Conídio, Germinação, Metarhizium anisopliae, Fungo,
Online Access:http://www.alice.cnptia.embrapa.br/alice/handle/doc/959161
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spelling dig-alice-doc-9591612017-08-15T23:47:16Z Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae. SILVA, R. A. da QUINTELA, E. D. MASCARIN, G. M. BARRIGOSSI, J. A. F. LIÃO, L. M. RODRIGO ALVES DA SILVA, CNPAF; ELIANE DIAS QUINTELA, CNPAF; GABRIEL MOURA MASCARIN, CNPAF; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; LUCIANO MORAES LIÃO, UFG. Arroz Oryza sativa Conídio Germinação Metarhizium anisopliae Fungo The toxicological impact of chemical pesticides on fungal entomopathogens and their use in tank-mixing can be directly measured through in vitro compatibility tests. This study reports the in vitro toxicity of eight insecticides, four fungicides and five herbicides in the conidial germination, vegetative growth and conidiation of Metarhizium anisopliae (strain CG 168). A conidial suspension containing the pesticide at recommended field dosage was subjected to constant agitation in a rotary shaker for 3h to simulate a tank mixing. Then, aliquots of each suspension were used to determine conidial germination, vegetative growth and conidiation on potato dextrose agar (PDA). The fungicides difenoconazole (69 mL ha?1), propiconazole (75 mL ha?1), trifloxystrobin (313 g ha?1) and azoxystrobin (56 mL ha?1) were the most harmful products to all biological stages of M. anisopliae and they should not be applied together with this fungus in tank mixing. The insecticides exhibited the least degree of toxicity to this fungal pathogen, whereas the herbicides had the greatest impact on mycelial growth. The agrochemicals compatible with M. anisopliae were the insecticides methyl parathion (240 mL ha?1), thiamethoxam (31 g ha?1), and lambda-cyhalothrin (6.3 mL ha?1) and the herbicides glyphosate (1560 mL ha?1), bentazon (720 mL ha?1), and imazapic+ imazapyr (84 g ha?1). The compatible pesticides could be simultaneously used with this bio-control agent for integrated pest management in rice production systems. 2013-06-03T11:11:11Z 2013-06-03T11:11:11Z 2013-06-03 2013 2013-10-18T11:11:11Z Artigo de periódico Scientia Agricola, Piracicaba, v. 70, n. 3, p. 152-160, maio/jun. 2013. http://www.alice.cnptia.embrapa.br/alice/handle/doc/959161 en eng openAccess
institution EMBRAPA
collection DSpace
country Brasil
countrycode BR
component Bibliográfico
access En linea
databasecode dig-alice
tag biblioteca
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language English
eng
topic Arroz
Oryza sativa
Conídio
Germinação
Metarhizium anisopliae
Fungo
Arroz
Oryza sativa
Conídio
Germinação
Metarhizium anisopliae
Fungo
spellingShingle Arroz
Oryza sativa
Conídio
Germinação
Metarhizium anisopliae
Fungo
Arroz
Oryza sativa
Conídio
Germinação
Metarhizium anisopliae
Fungo
SILVA, R. A. da
QUINTELA, E. D.
MASCARIN, G. M.
BARRIGOSSI, J. A. F.
LIÃO, L. M.
Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae.
description The toxicological impact of chemical pesticides on fungal entomopathogens and their use in tank-mixing can be directly measured through in vitro compatibility tests. This study reports the in vitro toxicity of eight insecticides, four fungicides and five herbicides in the conidial germination, vegetative growth and conidiation of Metarhizium anisopliae (strain CG 168). A conidial suspension containing the pesticide at recommended field dosage was subjected to constant agitation in a rotary shaker for 3h to simulate a tank mixing. Then, aliquots of each suspension were used to determine conidial germination, vegetative growth and conidiation on potato dextrose agar (PDA). The fungicides difenoconazole (69 mL ha?1), propiconazole (75 mL ha?1), trifloxystrobin (313 g ha?1) and azoxystrobin (56 mL ha?1) were the most harmful products to all biological stages of M. anisopliae and they should not be applied together with this fungus in tank mixing. The insecticides exhibited the least degree of toxicity to this fungal pathogen, whereas the herbicides had the greatest impact on mycelial growth. The agrochemicals compatible with M. anisopliae were the insecticides methyl parathion (240 mL ha?1), thiamethoxam (31 g ha?1), and lambda-cyhalothrin (6.3 mL ha?1) and the herbicides glyphosate (1560 mL ha?1), bentazon (720 mL ha?1), and imazapic+ imazapyr (84 g ha?1). The compatible pesticides could be simultaneously used with this bio-control agent for integrated pest management in rice production systems.
author2 RODRIGO ALVES DA SILVA, CNPAF; ELIANE DIAS QUINTELA, CNPAF; GABRIEL MOURA MASCARIN, CNPAF; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; LUCIANO MORAES LIÃO, UFG.
author_facet RODRIGO ALVES DA SILVA, CNPAF; ELIANE DIAS QUINTELA, CNPAF; GABRIEL MOURA MASCARIN, CNPAF; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; LUCIANO MORAES LIÃO, UFG.
SILVA, R. A. da
QUINTELA, E. D.
MASCARIN, G. M.
BARRIGOSSI, J. A. F.
LIÃO, L. M.
format Artigo de periódico
topic_facet Arroz
Oryza sativa
Conídio
Germinação
Metarhizium anisopliae
Fungo
author SILVA, R. A. da
QUINTELA, E. D.
MASCARIN, G. M.
BARRIGOSSI, J. A. F.
LIÃO, L. M.
author_sort SILVA, R. A. da
title Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae.
title_short Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae.
title_full Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae.
title_fullStr Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae.
title_full_unstemmed Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae.
title_sort compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus metarhizium anisopliae.
publishDate 2013-06-03
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/959161
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