|
|
|
|
|
| OSIPE,J.B.; OLIVEIRA JR.,R.S.; CONSTANTIN,J.; TAKANO,H.K.; BIFFE,D.F.. |
| ABSTRACT The possibility of using auxin mimics herbicides in culture postemergence applications contributes to weed management. This study aimed at evaluating and comparing the effectiveness of 2,4-D and dicamba herbicides on glyphosate resistant or tolerant weeds. The treatments were dicamba and 2,4-D doses with or without glyphosate. The evaluated weeds in the experiment were Richardia brasiliensis, Commelina benghalensis, Conyza sp. and Ipomoea nil. Herbicides were applied when weeds were in 4 to 6 and 10 to 12 leaves stages. Data referring to evaluations on day 30 after application were submitted to analysis of variance. Response-dose curves were obtained for herbicides, and C85 and C95 values were identified. Weed species showed different tolerance to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mimics auxin; Weeds; Richardia brasiliensis; Commelina benghalensis; Conyza bonariensis; Ipomoea nil. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100251 |
| |
|
|
| Rosseto,Ricardo R.; Pitelli,Robinson L.C. M.; Pitelli,Robinson A.. |
| A poaia-branca (Richardia brasiliensis Gomez) é uma das principais plantas que infestam espontaneamente os agroecossistemas na América do Sul e, com freqüência, atingem elevadas densidades populacionais, provocando sérios prejuízos aos agricultores. Nos estudos envolvendo a biologia e o controle de plantas daninhas, a área foliar é uma das mais importantes características a serem avaliadas, mas tem sido pouco estudada porque sua determinação exige equipamentos sofisticados ou utiliza técnica destrutiva. Visando obter equações que permitissem a estimativa da área foliar desta planta daninha utilizando características lineares do limbo foliar, facilmente mensuráveis em plantas no campo, foram estudadas correlações entre a área foliar real e as seguintes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Richardia brasiliensis; Planta daninha; Área foliar. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581997000100003 |
| |
|
|
| Machado,Eliete S.; Minhoni,Marli T.A.; Büll,Leonardo T.. |
| O presente experimento, inteiramente casualizado, foi desenvolvido em condições de laboratório no Departamento de Defesa Fitossanitária, FCA/UNESP - Botucatu, entre julho e setembro de 1992. Amostras de Areia Quartzosa equivalentes à 40 g de terra seca à 105 oC ± 2 com ou sem adição de 1,9 g de matéria seca de plantas de poaia-branca (Richardia brasiliensis), 0,19 g de nitrogênio (NH4)2SO4 e 0,88 g de apatita de Araxá, foram incubadas no escuro a 25 o C ± 2 , com umidade mantida a 60% da capacidade de retenção de água. Durante a incubação, determinou-se o CO2 liberado, utilizando-se o método de retenção em NAOH seguida de titulometria com HCl; a biomassa microbiana, método de fumigação-incubação; o pH e a quantidade de fósforo extraído por resina. A maior... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fosfato de rocha; Planta daninha; Richardia brasiliensis. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581999000100007 |
| |
|
|
| 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 |
| |
|
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
|
