|
|
|
|
|
| Kalsing,A.; Vidal,R.A.. |
| Os objetivos do presente trabalho foram estimar níveis críticos de dano de papuã (Urochloa plantaginea) em feijão-comum, em situações onde a planta daninha foi manejada precocemente e ocorreu reinfestação, e avaliar as alterações que sofre em decorrência de cultivares de feijão-comum e variáveis explicativas da infestação. Foram realizados dois experimentos em campo, em Eldorado do Sul, RS, sendo um com o cultivar UFT-06 (grupo Carioca) e o outro com o cultivar IPR Graúna (grupo Preto). Os níveis de infestação de papuã foram obtidos com quatro herbicidas residuais, aplicados em duas doses cada, mais testemunhas com e sem controle de papuã. A densidade, massa fresca e massa seca do papuã foram avaliadas no início e no final do período crítico de prevenção... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Urochloa plantaginea; Brachiaria plantaginea; Nível de dano econômico; Manejo integrado. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400010 |
| |
|
|
| FRANDOLOSO,F.S.; GALON,L.; CONCENÇO,G.; ROSSETTO,E.R.O.; BIANCHESSI,F.; SANTIN,C.O.; FORTE,C.T.. |
| ABSTRACT: The objective of this work was to evaluate the interference and to determine the level of economic damage (NDE) of the weed when infesting the corn crop. Treatments were composed by corn densities (2.60, 3.10, 3.65, 4.00 and 4.80 plants m-1) and 10 Alexandergrass populations for each crop seeding density. The population of plants, leaf area, soil cover and shoot dry mass of Alexandergrass were evaluated as indicator of infestation. Shoot dry mass of Alexandergrass presents better adjustment to the model of rectangular hyperbole, and losses of grain yield due to interference of the weed were satisfactorily estimated by this model. Corn sowing densities of 2.60; 3.10 and 3.65 plants m-1 in average, were more competitive of all evaluated variables... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Urochloa plantaginea; Zea mays; Competitive ability. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100246 |
| |
|
|
| GALON,L.; SANTIN,C.O.; ANDRES,A.; BASSO,F.J.M.; NONEMACHER,F.; AGAZZI,L.R.; SILVA,A.F.; HOLZ,C.M.; FERNANDES,F.F.. |
| ABSTRACT: The objective of this work was to determine the competitive interaction of sweet sorghum cultivars BRS 506, BRS509, and BRS 511 with biotypes of Alexandergrass and wild poinsettia. The adopted experimental design was the randomized block one, with four replications. Treatments were arranged in a substitution series by proportions of 100:0, 75:25, 50:50, 25:75, and 0:100%, corresponding to 20:0, 15:5, 10:10, 5:15 and 0:20 plant per pot of sweet sorghum (cultivars BRS 506, BRS 509 and BRS 511) withweeds (Alexander grass/wild poinsettia). The leaf area (LA) and dry matter (DM) of sweet sorghum, Alexandergrass and wild poinsettia plants were determined 50 days after emergence. Data about competitive abilities were analysed through the graphical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sorghum bicolor; Euphorbia heterophylla; Urochloa plantaginea. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100254 |
| |
|
|
| Costa,Vagner Guasso da; Rocha,Marta Gomes da; Pötter,Luciana; Roso,Dalton; Rosa,Aline Tatiane Nunes da; Reis,Jonatas dos. |
| Foram estudados o desempenho, o comportamento e a ingestão de forragem por novilhas de corte em pastagem de milheto (Pennisetum americanum (L.) Leeke) e papuã (Urochloa plantaginea) no período de janeiro a abril de 2008. Foi utilizado o método de pastejo contínuo com número variável de animais. A ingestão de forragem foi estimada nos estádios vegetativo e reprodutivo das forrageiras usando o óxido de cromo como indicador da produção fecal. As avaliações de comportamento foram feitas por meio de observação visual, em quatro períodos contínuos de 24 horas. Os valores médios de massa de forragem, oferta de forragem e oferta de lâminas foliares foram de 3.927 kg/ha de MS, 14,6 kg de MS/100 kg de peso corporal (PC) e 3,36 kg de MS/100 kg de PC, respectivamente.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Massa de bocado; Óxido de cromo; Pennisetum americanum; Taxa de bocados; Tempo de pastejo; Urochloa plantaginea. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000200004 |
| |
|
|
| Oliveira Neto,Renato Alves de; Silva,José Henrique Souza da; Rocha,Marta Gomes da; Pötter,Luciana; Sichonany,Maria José de Oliveira; Biscaíno,Ludmila Leonardi; Santos,Felipe Asconavieta dos; Difante,Marcos Vinicios Beck. |
| The experiment was carried out to evaluate forage intake, performance and ingestive behavior of beef heifers. Productive, structural and chemical characteristics of the pasture were also evaluated. The experimental design was completely randomized in a 3 × 2 factorial arrangement, with three pasture systems (Alexandergrass [Urochloa plantaginea Link.] with and without supplement to heifers and Coastcross [Cynodon dactylon (L.) Pers.]) and two phenological stages: vegetative and flowering. The grazing method was put-and-take stocking. Grazing, ruminating and idle activities, feeding stations, displacement patterns, bite mass and bite rate were evaluated. The forage intake was estimated using chromic oxide as an indicator of fecal output. The heifers... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chromic oxide; Cynodon dactylon; Feeding station; Urochloa plantaginea. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800003 |
| |
|
|
| Eloy, Lidiane Raquel; Universidade Federal de Santa Maria; Rocha, Marta Gomes da; Universidade Federal de Santa Maria; Pötter, Luciana; Universidade Federal de Santa Maria; Salvador, Paulo Roberto; Universidade Federal de Santa Maria; Stivanin, Sheila Cristina Bosco; Universidade Federal de Santa Maria; Hampel, Viviane da Silva; Universidade Federal de Santa Maria. |
| The experiment aimed at evaluating leaf biomass flow, intensity and frequency of defoliation of Alexandergrass (Urochloa plantaginea (Link) Hitch) by beef heifers exclusively on pasture or that grazed and received protein salt. A completely randomized experimental design was used with repeated measures over time, two treatments and two area replications, with three Angus test heifers by paddock. Leaf blade intake flow is 18% superior for heifers exclusively on pasture. Grazing intensity (59.8%) is similar when heifers receive protein salt or not. Heifers receiving protein salt reduce by one day the defoliation frequency of tillers. The supply of protein salt for beef heifers grazing Alexandergrass affects the herbivore-plant relationship, decreasing intake... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Defoliation frequency; Defoliation intensity; Morphogenesis; Urochloa plantaginea. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21815 |
| |
|
|
| Bergoli,T.L.; Rocha,M.G.; Pötter,L.; Salvador,P.R.; Sichonany,M.J.O.; Hundertmarck,A.P.; Rosa,V.B.; Dotto,L.R.. |
| ABSTRACT This study was carried out to evaluate the effect of nitrogen fertilization on tillering dynamics of Alexandergrass (Urochloa plantaginea (Link) Hitch) grazed by beef heifers in a rotational stocking grazing method. The experiment was conducted in a completely randomized design following a repeated measure arrangement, three levels of nitrogen (Zero, 150 and 300kg ha-1) and two area repetition. The classification of tillers into categories (basal and axillary) showed a greater number of basal tillers, due to their higher appearance rate, in the absence of nitrogen fertilization. Nitrogen fertilization promoted higher axillary tiller density. The use of nitrogen promotes the renewal of axillary tillers of Alexandergrass, without compromising the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Axillary tiller; Basal tiller; Stability index; Tiller density; Urochloa plantaginea. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000602049 |
| |
|
|
| Glienke,C.L.; Rocha,M.G.; Pötter,L.; Roso,D.; Montagner,D.B.; Oliveira Neto,R.A.. |
| Analyses in a data set of six experiments (n=436) was performed with the aim of characterizing canopy structure and forage intake patterns of beef heifers grazing on Pearl millet (Pennisetum americanum), Alexandergrass (Urochloa plantaginea) and Coastcross (Cynodon dactylon). Forage and leaf lamina mass were similar among species, 3001.4 and 668.1kg of DM/ha, respectively, while leaf:stem ratio of canopy vertical strata was different. Intake rate (12g DM/minute), bite mass (0.343g DM/bite) and bite rate (36.6bites per minute) were similar in Pearl millet and Alexandergrass. In Pearl millet, neutral detergent fiber content (56.1%) in forage as grazed, grazing time (518.9 minutes/day) and displacement rate (8.8 steps/minute) were lower. Increased grazing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cynodon dactylon; Feeding station; Grazing time; Pennisetum americanum; Urochloa plantaginea. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000200457 |
| |
|
|
|
