2011
DOI: 10.1590/s0100-83582011000200004
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Doses e horário de aplicação do diquat no controle de Eichhornia crassipes

Abstract: O aguapé (Eichhornia crassipes) é uma das mais importantes macrófitas aquáticas que colonizam reservatórios e corpos hídricos nas regiões tropicais e subtropicais do mundo, causando uma série de interferências no uso múltiplo da água e do corpo hídrico e no controle de vetores de doenças humanas. Para evitar prejuízos econômicos, sociais, estéticos e ao meio ambiente, essas plantas são controladas por vários métodos, incluindo o controle químico com o uso de herbicidas. Com o objetivo de avaliar a eficácia do … Show more

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Cited by 13 publications
(18 citation statements)
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“…Sprouts of water hyacinth were used in the plantation, newly detached from the parent plant and containing 3-4 leaves. Before planting, the boxes were lined with a layer of 5 cm of dirt and sand in the proportion of 2:1, and then they were filled with water up to 1 cm of the surface, leaving a layer of 10 cm of water on the sediment; later on, the boxes were incubated for a period of 15 days, before the plantation of water hyacinth (Pitelli et al, 2011). In the application of herbicides, a research sprayer was used, kept at a constant pressure by CO 2 .…”
Section: Tests In Greenhousementioning
confidence: 99%
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“…Sprouts of water hyacinth were used in the plantation, newly detached from the parent plant and containing 3-4 leaves. Before planting, the boxes were lined with a layer of 5 cm of dirt and sand in the proportion of 2:1, and then they were filled with water up to 1 cm of the surface, leaving a layer of 10 cm of water on the sediment; later on, the boxes were incubated for a period of 15 days, before the plantation of water hyacinth (Pitelli et al, 2011). In the application of herbicides, a research sprayer was used, kept at a constant pressure by CO 2 .…”
Section: Tests In Greenhousementioning
confidence: 99%
“…At 3, 7, 14, 21 and 28 days after application (DAA) of the herbicide, visual evaluations of the control percentage for E. crassipes were done, based on the visual estimate of the percentage of necrotic and dead plant material above the water blade (SBCPD, 2000;Pitelli et al, 2011). These estimates were always done by more than one person, and the average of the evaluators was used as a final value in each parcel (Pitelli et al, 2011).…”
Section: Evaluations Of the Efficacy Of The Herbicidementioning
confidence: 99%
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“…Para isso, é indispensável conhecer tanto os aspectos de distribuição da calda gerados pelos equipamentos como, também, as condições climáticas do ambiente que irão interagir com a dinâmica das gotas de pulverização, as quais são responsáveis pelo transporte do produto até o alvo. As condições climáticas variam conforme o local e no decorrer do dia e não podem ser controladas, ao contrário do modelo de ponta e o adjuvante utilizados, porém, essas condições do ambiente afetam diretamente a distribuição e a eficácia do produto aplicado (Ferreira et al, 1998;Pitelli et al, 2011).…”
Section: Introductionunclassified