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Registros recuperados: 14
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Activity of Antioxidant Enzymes in Euphorbia heterophylla Biotypes and their Relation to Cross Resistance to ALS and Protox Inhibitors Planta Daninha
XAVIER,E.; TREZZI,M.M.; OLIVEIRA,M.C.; VIDAL,R.A.; BRUSAMARELLO,A.P..
ABSTRACT: The characteristics of multiple resistance in Euphorbia heterophylla biotypes to herbicides that are inhibitors of ALS (Acetolactate synthase) and PPO (Protoporphyrinogen oxidase) and their responsible mechanisms are still not completely elucidated. The objectives of this study were to identify cross-resistance to herbicides from different chemical groups of ALS inhibitors (imidazolinones, sulfonylureas, pyrimidyl benzoates and sulfonanilides) and also PPO inhibitors (diphenylethers, phthalamides, oxadiazoles, triazolinones and pyrimidinediones) in E. heterophylla biotypes with multiple resistance to these herbicides; to analyze whether the antioxidant enzymes superoxide dismutase (SOD) and peroxidase (POD) constitute mechanisms that are...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dose-response curves; Superoxide dismutase; Peroxidase; Acetolactate synthase; Protoporphyrinogen oxidase.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100340
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Bioassay for Determining Persistence of the Herbicide Saflufenacil in an Oxisol Planta Daninha
DIESEL,F.; TREZZI,M.M.; VIDAL,R.A.; BARANCELLI,M.V.J.; MIZERSKI,P.H.F..
ABSTRACT: Persistence of an herbicide is defined as the ability to maintain the integrity of its molecule and chemical, physical, and phytotoxic properties in the environment where it was applied. Knowledge of persistence has implications both for the toxicity generated on species grown in succession and for the period in which the herbicide controls weeds. This study aimed to assess the persistence of the herbicide saflufenacil in an Oxisol by means of bioassays. Two experiments with the application of 29.4 g ha-1 of saflufenacil were carried out under field conditions: the first in the 2011/2012 season and the second in the 2012/2013 season. Soil samples were collected at depths of up to 10 cm at different times after application. Subsequently, two...
Tipo: Info:eu-repo/semantics/article Palavras-chave: PROTOX inhibitor; Cucumis sativus L.; Beta vulgaris L.; Residual effect.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100250
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Characterization of Ethoxysulfuron Herbicide Selectivity in Common Bean Cultivars Planta Daninha
PAGNONCELLI JR,F.B.; VIDAL,R.A.; TREZZI,M.M.; GALLON,M.; BRUSAMARELLO,A.P..
ABSTRACT: In literature, there are few studies evaluating the response of different bean cultivars to herbicides, particularly the ALS enzyme inhibitors. The objective of this study was to evaluate the selectivity of common bean cultivars to the herbicide ethoxysulfuron and to select cultivars that are more tolerant to it. An experiment was conducted in a greenhouse, in a completely randomized experimental design with four replications. Factors consisted in 20 bean cultivars (IPR Eldorado, IPR Siriri, IPR Gralha, IPR 81, IPR Uirapuru, IPR Colibri, IPR Tuiuiú, BRS Esplendor, IPR Tangará, IPR Juriti, IPR Corujinha, IPR Andorinha, IPR Curió, BRS Campeiro, BRS Pérola, BRS Notável, BRS Estilo, UTF 3, UTF 5 e UTF 6), and four doses of ethoxysulfuron (0, 50, 100...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Sulfonylureas; Tolerance; GGE biplot.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100311
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Chemical Management of Broadleaf Buttonweed and Brazilian Pusley in Different Application Methods Planta Daninha
GALLON,M.; TREZZI,M.M.; PAGNONCELLI JR,F.B.; PASINI,R.; VIECELLI,M.; CAVALHEIRO,B.M..
ABSTRACT: Increased use of glyphosate in transgenic soybean areas has selected resistant and tolerant weed species. The aim of this study was to evaluate chemical management strategies for controlling Borreria latifolia and Richardia brasiliensis at pre-emergence (Pre), early post-emergence (Poste) and late post-emergence (Postl). Six experiments were carried out in a completely randomized design with four replicates per treatment in the Pre experiments and three in the Poste and Postl experiments, for each of the species. In the Pre experiments, tests were performed with herbicides imazethapyr, sulfentrazone, chlorimuron, diclosulam, S-metolachlor and saflufenacil. In the Poste experiments, seedlings were sprayed with herbicides bentazon, fomesafen,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Borreria latifolia; Richardia brasiliensis; Pre-emergence; Early post-emergence; Late post-emergence.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100295
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Evolution of Natural Resistance to Glyphosate in Morning Glory Populations Planta Daninha
PAZUCH,D.; TREZZI,M.M.; GUIMARÃES,A.C.D.; BARANCELLI,M.V.J.; PASINI,R.; VIDAL,R.A..
ABSTRACT Tolerance, also referred to as natural resistance, is a feature that exists in the plant even before herbicide application in an area. I. grandifolia, I. indivisa and I. purpurea are among the tolerant species most commonly found over fields in southern Brazil. We hypothesized that the intensive use of glyphosate results in increasing levels of tolerance to glyphosate, and in pronounced response variability in populations of the same Ipomoea species. This study aimed at identifying tolerance variations to glyphosate among I. grandifolia, I.indivisa and I. purpurea morning glory species and among populations of these species. In crops over Paraná and Santa Catarina states (Brazil) 31 biotypes were collected (20I. grandifolia, 7I.indivisa and 4I....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tolerance; Ipomoea grandifolia; Ipomoea indivisa; Ipomoea purpurea; Control; Dose-response.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100205
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FLUAZIFOP-P-BUTYL EFFICACY AS A FUNCTION OF APPLICATION TIME AND HERBICIDE DOSE Planta Daninha
CIESLIK,L.F.; VIDAL,R.A.; MACHADO,A.B.; TREZZI,M.M..
ABSTRACT Grass weeds are common in summer crops and strongly decreases the grain yield of the common bean crop. The time of herbicide application influences the variability of environmental conditions and affects the product performance. The objectives of this work were to identify the time of fluazifop-p-butyl (fluazifop) application which gives best grass weed control in the common bean crop and to elucidate the environmental variables most important for the efficacy of this herbicide. Field experiments were conducted involving five application times (2 a.m., 6 a.m., 11 a.m., 4 p.m. and 9 p.m.) and five doses of fluazifop (80, 110, 140, 170 and 200 g ha-1), with additional no-herbicide control. At the time of the herbicide application it was determined...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical control; Environmental conditions; Leaf angle; Conceptual map.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100219
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INHERITANCE OF RESISTANCE TO PROTOPORPHYRINOGEN OXIDASE INHIBITOR HERBICIDES IN WILD POINSETTIA Planta Daninha
BRUSAMARELLO,A.P.; OLIVEIRA,P.H.; TREZZI,M.M.; XAVIER,E.; DALOSTO,E.D..
ABSTRACT Weed resistance to herbicides is a major global problem for agriculture. In recent years, the increased use of herbicides, without proper planning, has led to a large increase in the number of cases of weed biotypes that are resistant to one or more herbicide mechanism of action. Wild poinsettia biotypes (Euphorbia heterophylla), discovered in the State of Paraná, with resistance to herbicides that inhibit protoporphyrinogen oxidase (PROTOX) and acetolactate synthase (ALS), are the first case to exhibit multiple resistance in Brazil. This study analyzed the genetic inheritance of PROTOX inhibiting herbicide resistance in E. heterophylla. Crosses were conducted between biotypes that were susceptible (female parent) and those carrying multiple...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Euphorbia heterophylla; Hybridization; Genetics; Herbicide.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300575
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Interaction Between Saflufenacil and Other Oxidative Stress Promoting Herbicides to Control Wild Poinsettia Planta Daninha
DIESEL,F.; VIECELLI,M.; TREZZI,M.M.; PAGNONCELLI JR.,F.B..
ABSTRACT: Synergism is a desired result in the interaction between herbicides because it provides many benefits, among which the reduction of doses and the increment of control efficiency, and because it positively signals for the joint application of herbicides. The objective of this study is to evaluate the effect of the association of saflufenacil with other herbicides that promote oxidative stress on the development of Euphorbia heterophylla as well as to analyze if the resulting interactions are antagonistic, additive or synergistic. The experiment was conducted in pots, in a greenhouse, using a completely randomized design with four replications. Treatments consisted of saflufenacil (0, 1,2, 2,32, 4,47, 8,63, 16,65 g ha-1) alone and associated with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Euphorbia heterophylla; Synergism; Clomazone; Metribuzin; Paraquat.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100298
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Interactions of Saflufenacil with Other Herbicides Promoters of Oxidative Stress to Control Joyweed1 Planta Daninha
TREZZI,M.M.; DIESEL,F.; KRUSE,N.D.; XAVIER,E.; PAZUCH,D.; PAGNONCELLI JR.,F.; BATISTEL,S.C..
ABSTRACT This study was conducted to evaluate the efficacy of joyweed (Alternanthera tenella) control and antagonistic or synergistic potentials of saflufenacil herbicide applied alone or tank mixed with paraquat, metribuzin and clomazone. The experiment was conducted in a greenhouse in a completely randomized design with four replications. Treatments consisted of saflufenacil herbicide doses (0, 0.4, 0.7, 1.4, 2.1 and 2.8 g ha-1) applied isolated or associated with paraquat (0, 1 and 3 g ha-1), metribuzin (0, 38.4 and 105.6 g ha-1) or clomazone (0, 288 and 504 g ha-1). Visual control was determined at 14 and 21 days after spraying the herbicides (DAA) and shoots dry matter at 21 DAA. Colby's method was used to calculate the response from herbicide...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternanthera tenella; Tank mixture; Protox inhibitors; Photosystem I inhibitors; Photosystem II inhibitors; Carotenoids synthesis inhibitors.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000200319
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Interference of Broadleaf Buttonweed and White-Eye in Soybean Planta Daninha
DIESEL,F.; TREZZI,M.M.; GALLON,M.; MIZERSKI,P.H.F.; BATISTEL,S.C.; PAGNONCELLI,F.B..
ABSTRACT: Weed species is one of the factors contributing to grain yield losses due to crop-weed competition. Two of the most common weeds of soybean fields in Brazil are from the Rubiaceae family: Borreria latifolia and Richardia brasiliensis. This study aimed to evaluate the effects of B. latifolia and R. brasiliensis on plant development, yield components, and soybean productivity. Two assays were conducted in a randomized block design with four replications, using a two-level factorial design, in which the first factor consisted of the species B. latifolia and R. brasiliensis and the second factor consisted of the densities 0, 2, 4, 6, 8, 10, and 12 plants m-2. Plant height, leaf area and total chlorophyll in the V6 and R5 stages, number of pods per...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Interspecific competition; Glycine max; Richardia brasiliensis; Borreria latifolia; Density.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100222
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Prospección de las combinaciones de herbicidas para prevenir malezas tolerantes y resistentes al glifosato Planta Daninha
VIDAL,R.A.; RAINERO,H.P.; KALSING,A.; TREZZI,M.M..
El intenso empleo de glifosato contribuyó a la difusión de malezas con tolerancia a este herbicida, incluyendo especies como Ipomoea nil, bejuco en Argentina, o corriola, o corda-de-viola en Brasil. A su vez, el uso intensivo de imadozolinonas en ciertas regiones de Argentina contribuyó a la aparición de biotipos resistentes a herbicidas que actúan inhibiendo la enzima ALS como Amaranthus quitensis, yuyo colorado o ataco, conocido como carurú en Brasil. En ese país, también, aumentó la difusión de malezas con resistencia a glifosato como en Euphorbia heterophylla, leiteiro o amendoim-bravo y en Lolium multiflorum, azevém. El objetivo de esta investigación fue evaluar el antagonismo o el sinergismo de todas las combinaciones posibles entre dos de los...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tolerancia; Resistencia; Glifosato; Sinergismo; Antagonismo.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000100019
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Response of Wheat Plants to Combinations of Herbicides with Insecticides and Fungicides Planta Daninha
VIECELLI,M.; PAGNONCELLI JR.,F.B.; TREZZI,M.M.; CAVALHEIRO,B.M.; GOBETTI,R.C.R..
ABSTRACT: The combination of herbicides and other pesticides can influence weed and crop management. This study aimed to evaluate the response of the combination of different herbicides with insecticides or fungicides of different chemical groups on the development and yield of wheat grains of the cultivar ORS Vintecinco. The experimental design was a randomized block design with three replications. The experiment consisted of 33 treatments, as follows: control without application and application of the herbicides 2,4-D (1,005 g a.e. ha-1), bentazon (756 g a.i. ha-1), metsulfuron-methyl (3 g a.i. ha-1), and pyroxsulam (16 g a.i. ha-1), isolated or combined with the insecticides chlorfluazuron (15 g a.i. ha-1), chlorpyrifos (720 g a.i. ha-1), deltamethrin...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Triticum aestivum; Synergism; Antagonism; Tolerance; Grain yield.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100263
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TOLERANCE OF COMMON BEAN PLANTS TO ETHOXYSULFURON HERBICIDE AND THE MECHANISM INVOLVED IN THE PROCESS Planta Daninha
PAGNONCELLIJR.,F.D.B.; VIDAL,R.A.; TREZZI,M.M.; MACHADO,A.; GALLON,M.; XAVIER,E.; OLIVEIRA,M.C..
ABSTRACT The objectives of this study were to determine the effect of herbicide ethoxysulfuron on the development of commom bean (Phaseolus vulgaris), to evaluate the impact of the herbicide on the crop grain yield and to determine the mechanism of tolerance of common bean to ethoxysulfuron. Field experiments were carried out with several doses of ethoxysulfuron to determine its effect on the grain yield of two varieties of common bean ("IPR Andorinha", "IPR Tangará"). The mechanism of plant tolerance was evaluated through several methods, including the analysis of the ALS enzyme sensitivity to herbicide and the use of P450 inhibitors (the insecticides malathion + chlorpyrifos) and the use of antidote (mefenpyr-diethyl). When the rate of ethoxysulfuron was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Crop grain yield; ALS enzyme; Detoxification.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300535
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Tolerance to Glyphosate in Broadleaf Buttonweed and White-Eye Biotypes Planta Daninha
DIESEL,F.; TREZZI,M.M.; GALLON,M.; BALBINOT JR.,A.A.; PAGNONCELLI,F.B..
ABSTRACT: Infesting species of Rubiaceae family have great importance in soybean crops in Southwest of Paraná and North of Santa Catarina, especially due to the selection of tolerant populations caused by the pressure of selection exerted by intensive use of glyphosate. The study aimed to evaluate the levels of tolerance to glyphosate in biotypes of broadleaf buttonweed (Borreria latifolia) (BL) and white-eye (Richardia brasiliensis) (RB) by means of dose-response curves. Two experiments were conducted in a greenhouse, in completely randomized design (CRD), with four replications. Fourteen BL biotypes and eleven RB biotypes were evaluated, collected in soybean fields of Paraná and Santa Catarina. The doses of glyphosate were 0, 74, 163, 360, 792 and 1,742...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Borreria latifolia; Herbicide; Richardia brasiliensis; Selection.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100338
Registros recuperados: 14
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