Efeito da adição de óleos ao acaricida cyhexatin sobre o ácaro Brevipalpus phoenicis e na retenção de calda por folhas de citros

Andrade, Daniel Júnior de; Ferreira, Marcelo da Costa; Santos, Natali Calazança dos

doi:10.1590/s0100-29452010000400014

Cited by 11 publications

(7 citation statements)

References 7 publications

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“…This effect of the adjuvants is consistent with the results reported by other authors for other adjuvants (ANDRADE et al, 2010;SOARES et al, 2013).…”

Section: Deposit Quantity As a Function Of Different Spraying Liquidssupporting

confidence: 92%

Deposit of pesticides without and with adjuvants on citrus seedlings following different intervals of artificial rain

Decaro

Ferreira

2016

Cienc. Rural

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“…This effect of the adjuvants is consistent with the results reported by other authors for other adjuvants (ANDRADE et al, 2010;SOARES et al, 2013).…”

Section: Deposit Quantity As a Function Of Different Spraying Liquidssupporting

confidence: 92%

Deposit of pesticides without and with adjuvants on citrus seedlings following different intervals of artificial rain

Decaro

Ferreira

2016

Cienc. Rural

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“…These results imply that a greater spreading factor on the surface due to lower surface tension resulted in a greater spreading of the droplets and therefore enabled reduction of the solution volume (MATUO et al 1989). The solution with glyphosate has a diminution the reduction in surface tension when vegetable oil and mixture tributyl citrate + polydimethylsiloxane were added, except at 180 seconds (Figure 1 With a greater spreading factor, can occur a reduction of the maximum quantity of liquid retained by the leaves, as showed in the research of ANDRADE et al (2010), where was observed that the addition of oil, either mineral or vegetable, to an acaricide in the spraying solution reduced the maximum quantity of liquid retained by the leaves of citrus plants, which suggested the possibility of reducing the amount of solution needed for good coverage of the plant. MACIEL et al (2010) also reported that mineral oil proved effective in reducing the surface tension for tank mixing with glyphosate formulations and with chlorimuron-ethyl.…”

Section: Surface Tension and Contact Angle On The Leaves Of Ipomoea Hmentioning

confidence: 84%

Distribution pattern, surface tension and contact angle of herbicides associated to adjuvants on spraying and control of Ipomoea hederifolia under rainfall incidence

Calore¹,

Ferreira

Rodrigues

et al. 2015

Eng. Agríc.

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Scarlet Morning Glory is considered to be an infesting weed that affects several crops and causes serious damage. The application of chemical herbicides, which is the primary control method, requires a broad knowledge of the various characteristics of the solution and application technology for a more efficient phytosanitary treatment. Therefore this study aimed to characterize the effect of rainfall incidence on the control of Ipomoea hederifolia, considering droplet size, surface tension, contact angle of droplets formed by herbicides liquid on vegetal and artificial surfaces, associated to adjuvants and the volumetric distribution profile of the spray jet. The addition of the adjuvants to the herbicide spraying liquid improved the application quality, as it influenced the angle formed by the spray by broadening the deposition band of the spray nozzle and thus the possible distance between the nozzles on spray boom and due the changes at droplet size, which contribute to a safety application. The rainfall occurrence affected negatively the weed control with the different spraying liquids and also the dry matter weight, suggesting that the phytosanitary product applied was washed off.KEYWORDS: application technology, scarlet morning glory, glyphosate, paraquat. PADRÃO DE DISTRIBUIÇÃO, TENSÃO SUPERFICIAL E ÂNGULO DE CONTATO DE CALDAS HERBICIDAS ASSOCIADAS A ADJUVANTES EM PULVERIZAÇÃO E CONTROLE DE Ipomoea hederifolia SOB INCIDÊNCIA DE CHUVARESUMO: A corda-de-viola é considerada uma planta daninha infestante de diversas culturas, causando importantes prejuízos. A aplicação de herbicidas químicos, principal método de controle, requer o conhecimento de diversas características da calda e da tecnologia de aplicação para tornar o tratamento fitossanitário mais eficiente. Diante disso, este trabalho teve como objetivo caracterizar o efeito da incidência de chuvas no controle de Ipomoea hederifolia, considerando o tamanho das gotas, a tensão superficial, o ângulo de contato de gotas formadas por caldas herbicidas em superfícies vegetais e artificiais, associados a adjuvantes e o perfil de distribuição volumétrica do jato pulverizado. A adição dos adjuvantes na calda herbicida melhorou a qualidade da aplicação, pois influenciou no ângulo formado pelo jato de pulverização, ampliando a faixa de deposição da ponta, e diminuiu as gotas suscetíveis à deriva divido às alterações no tamanho das gotas, o que contribui para uma aplicação de segurança. A incidência de chuva afetou negativamente o controle das plantas daninhas nas diferentes caldas e também o peso de massa seca, indicando uma lavagem dos produtos aplicados.PALAVRAS-CHAVE: tecnologia de aplicação, corda-de-viola, glifosato, paraquat.

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“…Besides these aspects, the addition of vegetable oil to agricultural spray mixes is also a routine with recognized efficacy and less potential for phytotoxicity when compared to mineral oils (Mendonça et al 2007, Andrade et al 2010.…”

Section: Effectiveness In the Fieldmentioning

confidence: 99%

Pulverização de glyphosate associado a diferentes concentrações de resíduo não-purificado da produção de biodiesel

Carvalho¹,

Machado

Lima

et al. 2015

RBHerbicidas

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-Searching for renewable energy sources has motivated the development of biodiesel production units in Brazil. However, for biodiesel being considered fully sustainable, suitable destinations for its production waste should be found, especially for crude glycerin. Therefore, this work was developed to evaluate glyphosate herbicide efficacy on weed control when combined to different concentrations of non-purified residue of biodiesel production. Two experiments were carried out, one in an experimental plant nursery, using sourgrass (Digitaria insularis) as bioindicator, and another one in field condition, assessing the natural weed community. Adding biodiesel production waste to the spray mix solution has not increased glyphosate efficacy in controlling sourgrass. Furthermore, there was a reduction in glyphosate effectiveness after addition of waste to the spray mix solution at doses equal to or higher than 0.6% v/v. No results were found justifying the adoption of biodiesel production residue as an agricultural adjuvant. Positive points observed were minimal, with no consistency between species or application times, and glyphosate remains as the best application and recommendation option. Keywords: glycerin; sustainability; adjuvants; herbicides; biofuels Resumo -A busca por fontes energéticas renováveis tem estimulado a implantação de unidades de produção de biodiesel no Brasil. Porém, para que o biodiesel seja considerado plenamente sustentável, deve-se encontrar destinos adequados para os resíduos de sua produção, com destaque para a glicerina bruta. Assim sendo, este trabalho foi desenvolvido com o objetivo de avaliar a eficácia do herbicida glyphosate no controle de plantas daninhas quando associado a diferentes concentrações de resíduo não purificados da produção de biodiesel. Dois experimentos foram realizados, um em viveiro experimental, utilizando o capim-amargoso (Digitaris insularis) como bioindicador; e outro em campo, avaliando a comunidade natural de plantas daninhas. A adição de resíduo da produção de biodiesel à calda de pulverização não elevou a eficácia do herbicida glyphosate no controle do capim-amargoso. Ainda, foi observada redução na eficácia do glyphosate após adição de resíduo à calda de pulverização em doses iguais ou superiores a 0,6% v/v. Não foram encontrados resultados que justifiquem a adoção de resíduo da produção de biodiesel como adjuvante agrícola. Os pontos positivos observados foram mínimos, sem consistência entre Rev. Bras. Herb., v.14, n.2, p.171-180, abr./jun. 2015 espécies ou momentos de aplicação, permanecendo o glyphosate puro como a melhor opção de aplicação e recomendação.

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Efeito da adição de óleos ao acaricida cyhexatin sobre o ácaro Brevipalpus phoenicis e na retenção de calda por folhas de citros

Cited by 11 publications

References 7 publications

Deposit of pesticides without and with adjuvants on citrus seedlings following different intervals of artificial rain

Deposit of pesticides without and with adjuvants on citrus seedlings following different intervals of artificial rain

Distribution pattern, surface tension and contact angle of herbicides associated to adjuvants on spraying and control of Ipomoea hederifolia under rainfall incidence

Pulverização de glyphosate associado a diferentes concentrações de resíduo não-purificado da produção de biodiesel

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