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Commelina Species Control with Desiccants Alone and in Mixtures Planta Daninha
FERREIRA,S.D.; SALVALAGGIO,A.C.; MORATELLI,G.; VASCONCELOS,E.D.; COSTA,N.V..
ABSTRACT: The objective of this study was to evaluate the chemical control of the species C. benghalensis and C. erecta with desiccants alone and mixtures, as well as the spreading of spray droplets on the leaf surfaces. The experimental design was completely randomized in a 2 x 16 factorial arrangement with four replications, totaling 32 treatments and 128 plots. The first factor is related to the species C. benghalensis and C. erecta and the second factor corresponds to the treatments carfentrazone-ethyl in doses of 15, 30, 60 g ha-1, which added 0.5% v v-1 adhesive spreader; glufosinate ammonium at doses of 100, 200, 400 g ha-1, added 0.5% v v-1 mineral oil; glyphosate at 240, 480, 960 g ha-1; carfentrazone-ethyl + glufosinate ammonium in doses of 100,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Weed; Droplets surface tension; Spreader and sticker agent; Chemical control; Synergism.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100278
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Sumatran Fleabane Control using Glyphosate in Association with Halauxifen-Methyl Formulations Planta Daninha
ZOBIOLE,L.H.S.; KRENCHINSKI,F.H.; MORATELLI,G.; COSTA,N.V..
ABSTRACT: The effectiveness of a new product has a great importance to weed control, especially those that are difficult to control or resistant to, such as the sumatran fleabane (Conyza sumatrensis). The objective of this research was to evaluate the control of C. sumatrensis at different growth stages, using halauxifen-methyl in combination with other herbicides. The experimental design used was a randomized blocks in a 3x10 factorial scheme, with four replications. The plants of C. sumatrensis were evaluated at different growth: stage 1: plants with 8 leaves; Stage 2: plants with 19 leaves and stage 3: plants with 45 leaves fully expanded. The herbicides used were the association of glyphosate with the herbicides 2,4-D at 806, 943 and 1,209 g a.e. ha-1,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conyza sumatrensis; Arylpicolinate herbicide; Auxin mimic herbicide; Burndown.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100279
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Growth and Development of Digitaria insularis Biotypes Susceptible and Resistant to Glyphosate Planta Daninha
PEREIRA,,G.R.; COSTA,,N.V.; MORATELLI,G.; RODRIGUES-COSTA,A.C.P..
ABSTRACT The study aimed to evaluate the growth and development of biotypes of Digitaria insularis susceptible and resistant to glyphosate. Samples of biotypes were collected in Western Paraná in Cascavel, one susceptible (24o57'29.06" S and 53o30'23.73" W) and one resistant (24o54'54.99" S and 53o30'08.55" W; with Resistance Factor of 2.96). The experiment was arranged in a completely randomized design with four replications. The treatments consisted of different plant collection timings, carried out at regular intervals of 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105 and 112 days after emergence. The growth curve of susceptible and resistant biotypes were similar; however, the susceptible biotypes accumulated more leaf dry mass, while the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth analysis; Chemical control; Sourgrass; Weeds.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100224
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SULFENTRAZONE SELECTIVITY AND EFFICIENCY IN CASSAVA CROPS IN SANDY AND CLAYEY SOILS Planta Daninha
COSTA,N.V.; FERREIRA,S.D.; RAMELLA,J.R.; MORATELLI,G.; DOURADO,R.F..
ABSTRACT Weeds have the potential to dramatically interfere in cassava cultivation, reducing its productive potential; however, there are few studies on the selective herbicides in this crop. Therefore, the objective was to evaluate in this work the selectivity and efficiency of sulfentrazone in cassava crops grown in sandy and clayey soils. Two experiments were carried out: The first one was carried out in sandy soil conditions in the conventional system; and the second one was carried out in clayey soil conditions in the no-tillage system. The experimental design was a randomized block with four replications. The treatments consisted in doses of 250, 500, 750 and 1,000 g ha-1 of sulfentrazone, and weeded and non-weeded controls. Sulfentrazone application...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical control; Protox inhibitors; Weed; Manihot esculenta.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000400787
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Resistance to Glyphosate in Populations of Digitaria insularis Planta Daninha
COSTA,N.V.; MORATELLI,G.; FERREIRA,S.D.; SALVALAGGIO,A.C.; RODRIGUES-COSTA,A.C.P..
ABSTRACT: The intensive use of glyphosate can select resistant populations. This study aimed at evaluating the occurrence of glyphosate resistance in populations of D. insularis in agricultural areas. Three experiments were conducted in randomized block experimental design with four replications. The Resistance Degree (RD) was determined by a dose-response curve in the evaluated populations: Experiment 2012, São Camilo (R01 and R02) and Palotina (R03, R04 and S05-susceptible); Experiment 2013 Palotina (R06 and R12), Katueté/Paraguay (R07), Toledo (R08 and R10), Cascavel (R09), São Miguel do Iguaçu (R11), Dom Eliseu/Pará (S13-susceptible); Experiment 2015 Nova Aurora (R14), Iracema do Oeste (R15 and R16), Jesuitas (R17 and R18), Tupãssi (R19), Jotaesse...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sourgrass; Agricultural practices; Weed; Herbicide.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100330
Registros recuperados: 5
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