Efeito residual da aplicação de fluazifop-p-butil + fomesafen em solos com plantas-teste

Silva, Carlos Magno Magalhães da; Freitas, Silvério de Paiva; Rosa, Raul Castro Carrielo

doi:10.1590/s0103-84782007000500037

Cited by 6 publications

(6 citation statements)

References 4 publications

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“…Silva et al (2007) found that there was a reduction of 38% of the dry root mass of seedlings of passion fruit, due to the residual effect of the herbicide fluazifop-p-butyl mix + fomesafen. This did not occur in other crops such as squash, cucumber and corn, demonstrating the likelihood of injury occurs in the culture of passion fruit in succession crops.…”

Section: Resultsmentioning

confidence: 99%

Phytotoxicity of Herbicides in Seedlings of Sweet Passion Fruit

Amaral¹,

Ferreira²,

Souza³

et al. 2018

JAS

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The culture of sweet passion fruit has been increasingly studied and exploited commercially in Brazil, with emphasis on the State of São Paulo. This is due to the high value achieved in the market of fresh fruit and be considered a food with functional properties beneficial to human health. However, the cultivation on a large scale finds some obstacles, as the control of weeds with the use of herbicides. In this sense, the objective of this work was to evaluate the phytotoxicity of seven herbicides with different mechanisms of action in seedlings of sweet passion fruit. Different variables were assessed: initial plant height (IPH) and final plant height (FPH); initial number of sheets (INS) and end number of sheets (ENS); intoxication of plants (INTO); fresh leaf mass (FLM) and dry leaf mass (DLM); fresh stem mass (FSM); dry steam mass (DSM); fresh root mass (FRM) and dry root mass (DRM) and total dry mass (TDM). Chlorimuron-ethyl (ALS inhibitor), glyphosate (EPSP synthase inhibitor), paraquat (photosystem I inhibitor) and atrazine (photosystem II inhibitor) have the higher effect on the variables analyzed, and they caused some kind of intoxication in the plants of sweet passion fruit. Conversely, haloxyfop-p-methyl (ACCase inhibitor) and fomesafen (protox inhibitor) showed a lesser effect on the sweet passion fruit plants.

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Section: Resultsmentioning

confidence: 99%

Phytotoxicity of Herbicides in Seedlings of Sweet Passion Fruit

Amaral¹,

Ferreira²,

Souza³

et al. 2018

JAS

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“…Ametryne belongs to the same chemical group of prometryne (s -triazines), and both have similar chemical properties, such as pKa and half-life in soil (RODRIGUES; ALMEIDA, 2011). Nonetheless, it is relevant to mention that cucumber (C. sativus) is used as a bioindicator of herbicide in soil due to its high sensitivity to some herbicides as ametryne (SILVA et al, 2007;VIDAL, 2009). …”

Section: Experiments 3 -Soybeansmentioning

confidence: 99%

Residual Activity of Herbicides Applied to Cotton on Crops Cultivated in Succession

et al. 2016

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-Herbicides with high persistence in soil can cause problems for crops sown in succession to their application. Thus, the aim of this study was to estimate, in greenhouse conditions, the safe period of time after application of preemergent herbicides used on cotton crops (isolated or in mixtures) for the crops grown in succession (bean, corn, and soybean). The experimental design was completely randomized in a factorial scheme (5 x 11) + 1, with five repetitions. For each experiment, treatments combined different time periods between herbicide application and sowing of crops (280, 210, 140, 70, and 0 days before sowing of crops) with eleven herbicide treatments: fomesafen (625 g ha -1 ) prometryne (1250 g ha -1 ), diuron (1250 g ha -1 ), Smetolachlor (768 g ha -1 ), clomazone (1000 g ha -1 ), fomesafen + prometryne (625 + 1250 g ha -1 ), fomesafen + diuron (625 + 1250 g ha -1 ), fomesafen + S-metolachlor (625 + 768 g ha -1 ), fomesafen + clomazone (625 + 1000 g ha -1 ), fomesafen + clomazone + diuron (625 + 1000 + 1250 g ha -1 ), and fomesafen + clomazone + prometryne (625 + 1000 + 1250 g ha -1 ), plus an untreated control. Applications of diuron showed the greatest persistence, causing the largest carryover effects for the three crops evaluated. The other treatments showed residual effects or affected crop development when sowings were performed up to 70 days after application. At later periods no significant damage was observed.Keywords: Carryover. Phytointoxication. Persistence. Bioassay. ATIVIDADE RESIDUAL DE HERBICIDAS APLICADOS NO ALGODOEIRO SOBRE CULTURAS SEMEADAS EM SUCESSÃORESUMO -Herbicidas com alta persistência no solo podem causar problemas em culturas semeadas em sucessão a sua aplicação. Desta forma, o objetivo deste trabalho foi estimar, em condições de casa-devegetação, o período de tempo seguro após aplicações em pré-emergência de herbicidas utilizados no algodoeiro (isolados ou em misturas) sobre culturas semeadas em sucessão (feijoeiro, milho e soja). O delineamento experimental utilizado foi o inteiramente casualizado, em arranjo fatorial (5 x 11) + 1, com cinco repetições. Em cada experimento (cultura), os tratamentos foram constituídos pela combinação de intervalos de tempo entre aplicação do herbicida e a semeadura das culturas (280, 210, 140, 70 e 0 dia, antes da semeadura das culturas) e onze tratamentos com herbicidas: fomesafen (625 g ha -1 ) prometryne (1250 g ha -1 ), diuron (1250 g ha -1 ), s-metolachlor (768 g ha ), fomesafen + clomazone + diuron (625 + 1000 + 1250 g ha -1 ) e fomesafen + clomazone + prometryne (625 + 1000 + 1250 g ha -1 ) acrescidos de uma testemunha sem aplicação de herbicidas. Constatouse que as aplicações dos tratamentos contendo diuron apresentaram maior persistência, causando maior efeito carryover para as três culturas. Os demais tratamentos apresentaram efeito residual ou comprometeram o desenvolvimento das culturas quando as semeaduras foram realizadas até 70 dias após as aplicações, nos períodos superiores não foram observados danos significativo...

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“…The fluazifop-pbutyl is enzyme inhibitor acetil-CoA carboxylase, used to control of grasses. The fomesafen belongs to the group of protoporphyrinogen oxidase inhibitors (PPO or PROTOX), used for control of annual broadleaved species (Silva et al 2007). Araújo et al (2008) verified that the application of these active ingredients (a.i.)…”

Section: Introductionmentioning

confidence: 99%

Nitrogen topdressing and application ways of fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean

Silva

Arf

Teodoro

2015

An. Acad. Bras. Ciênc.

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The objective of this study was to investigate the effect of interaction between nitrogen topdressing and different application ways (active ingredients) a.i. fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean. The experiment was conducted during winter 2003 in Selvíria/ MS. The experimental design used was a randomized block design with four replications in a factorial scheme 2x7. The first factor was composed by the absence or presence of nitrogen topdressing, while the second factor consisted of different application ways of fluazifop-p-butyl + fomesafen. The following variables were measured: leaf N content, dry matter of plants, yield components (number of pods plant -1 , number of grains plant -1 , the average number of grains pod -1 and mass of 100 grains), grain yield, phytotoxicity and weed control percentage. The nitrogen topdressing with 75 kg ha -1 provided higher dry matter of plants, higher weed control and higher common bean yield of irrigated winter. In the absence of nitrogen topdressing in the application of urea before or together to fluazifop-p-butyl + fomesafen increased their effectiveness in controlling weeds without interference in the agronomic performance of common bean.

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Efeito residual da aplicação de fluazifop-p-butil + fomesafen em solos com plantas-teste

Abstract: RESUMO Foi realizado um ensaio visando a avaliar o efeito residual da mistura pronta fluazifop-p-butil + fomesafen

Cited by 6 publications

References 4 publications

Phytotoxicity of Herbicides in Seedlings of Sweet Passion Fruit

Phytotoxicity of Herbicides in Seedlings of Sweet Passion Fruit

Residual Activity of Herbicides Applied to Cotton on Crops Cultivated in Succession

Nitrogen topdressing and application ways of fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean

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