Physical Compatibility and Stability of Pesticide Mixtures at Different Spray Volumes

ABSTRACT: Available information on physical compatibility and stability of pesticide mixtures is scarce and often divergent. This knowledge is of fundamental importance in the success of pest, disease, and weed control programs. Compatibility and stability of two glyphosate formulations (WG and SL)...

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Main Authors: H.M.F. MORAES, J.O. COSTA, G.A.M. PEREIRA, W.M. SOUZA, A.A. SILVA, G.P. PAIXÃO
Format: Article
Language:English
Published: Sociedade Brasileira da Ciência das Plantas Daninhas 2019-11-01
Series:Planta Daninha
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100179&tlng=en
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author H.M.F. MORAES
J.O. COSTA
G.A.M. PEREIRA
W.M. SOUZA
A.A. SILVA
G.P. PAIXÃO
author_facet H.M.F. MORAES
J.O. COSTA
G.A.M. PEREIRA
W.M. SOUZA
A.A. SILVA
G.P. PAIXÃO
author_sort H.M.F. MORAES
collection DOAJ
description ABSTRACT: Available information on physical compatibility and stability of pesticide mixtures is scarce and often divergent. This knowledge is of fundamental importance in the success of pest, disease, and weed control programs. Compatibility and stability of two glyphosate formulations (WG and SL) in a mixture with fluazinam + deltamethrin + trifloxystrobin/cyproconazole at four diluted water concentrations and different times were evaluated under laboratory conditions. The evaluations were performed at the following time intervals: immediately after mixing and 1, 5, 10, 30, 120, 900, and 1,440 minutes after the mixing of pesticides. Scores were assigned on a scale ranging from 1 to 5, where 1 meant immediate separation of compounds and 5 the perfect mixture stability up to 30 minutes. The data were submitted to descriptive statistics and presented in tables. Mixture stability differed in glyphosate formulations and their concentrations due to the used spray solution volume. Distinct mixtures between glyphosate (SL) and deltamethrin, as well as between glyphosate (WG) and deltamethrin, were physically compatible when stirred again even after 24 hours at rest. The mixture containing glyphosate (SL), deltamethrin, and fluazinam and trifloxystrobin/ cyproconazole was incompatible at a volume of 30 L ha-1.
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spelling doaj.art-bef84c00ef454ee8b2e1249d2be625a42022-12-21T20:06:09ZengSociedade Brasileira da Ciência das Plantas DaninhasPlanta Daninha0100-83582019-11-013710.1590/s0100-83582019370100125Physical Compatibility and Stability of Pesticide Mixtures at Different Spray VolumesH.M.F. MORAEShttps://orcid.org/0000-0002-5387-7880J.O. COSTAG.A.M. PEREIRAW.M. SOUZAA.A. SILVAG.P. PAIXÃOABSTRACT: Available information on physical compatibility and stability of pesticide mixtures is scarce and often divergent. This knowledge is of fundamental importance in the success of pest, disease, and weed control programs. Compatibility and stability of two glyphosate formulations (WG and SL) in a mixture with fluazinam + deltamethrin + trifloxystrobin/cyproconazole at four diluted water concentrations and different times were evaluated under laboratory conditions. The evaluations were performed at the following time intervals: immediately after mixing and 1, 5, 10, 30, 120, 900, and 1,440 minutes after the mixing of pesticides. Scores were assigned on a scale ranging from 1 to 5, where 1 meant immediate separation of compounds and 5 the perfect mixture stability up to 30 minutes. The data were submitted to descriptive statistics and presented in tables. Mixture stability differed in glyphosate formulations and their concentrations due to the used spray solution volume. Distinct mixtures between glyphosate (SL) and deltamethrin, as well as between glyphosate (WG) and deltamethrin, were physically compatible when stirred again even after 24 hours at rest. The mixture containing glyphosate (SL), deltamethrin, and fluazinam and trifloxystrobin/ cyproconazole was incompatible at a volume of 30 L ha-1.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100179&tlng=enpesticidesformulationspraying
spellingShingle H.M.F. MORAES
J.O. COSTA
G.A.M. PEREIRA
W.M. SOUZA
A.A. SILVA
G.P. PAIXÃO
Physical Compatibility and Stability of Pesticide Mixtures at Different Spray Volumes
Planta Daninha
pesticides
formulation
spraying
title Physical Compatibility and Stability of Pesticide Mixtures at Different Spray Volumes
title_full Physical Compatibility and Stability of Pesticide Mixtures at Different Spray Volumes
title_fullStr Physical Compatibility and Stability of Pesticide Mixtures at Different Spray Volumes
title_full_unstemmed Physical Compatibility and Stability of Pesticide Mixtures at Different Spray Volumes
title_short Physical Compatibility and Stability of Pesticide Mixtures at Different Spray Volumes
title_sort physical compatibility and stability of pesticide mixtures at different spray volumes
topic pesticides
formulation
spraying
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100179&tlng=en
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