|
|
|
|
|
| Amim,Reynaldo Tancredo; Freitas,Silvério de Paiva; Freitas,Ismael Lourenço de Jesus; Scarso,Murilo Francischinelli. |
| Resumo: O objetivo deste trabalho foi avaliar o efeito dos herbicidas pré-emergentes indaziflam, indaziflam+metribuzim e diuron+hexazinone sobre o banco de sementes do solo de lavoura de cana-de-açúcar, durante quatro safras consecutivas. Utilizou-se o delineamento experimental de blocos ao acaso, com quatro repetições, em parcelas subdivididas. Os tratamentos consistiram de doses dos seguintes herbicidas: indaziflam, 75, 100 e 150 g i.a. ha-1; indaziflam+metribuzim, 75 + 960 g i.a. ha-1; e diuron+hexazinone, 936 + 264 g i.a. ha-1; além de área capinada, como testemunha. O banco de sementes foi analisado nas camadas do solo de 0,00-0,10 e 0,10‒0,20 m. Realizaram-se a contagem e a identificação de plântulas emergidas, e calcularam-se a densidade, a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum; Diuron; Hexazinone; Indaziflam; Metribuzim; Plantas daninhas. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016001001710 |
| |
|
|
| Clement,A.A.; Lammel,J. S.; A. Filho,J.; Barbosa,J.C.. |
| Foi realizado no ano agrícola 1976/77 um experimento em solo arenoso na Usina Utinga/LeãoAL, no qual foram testados em pré-emergência os tratamentos: hexazinone em 4 doses; hexazinone + diuron em 3 doses; diurom + 2,4 D amina e ametrina + 2,4 D amina. Aos 47, 78 e 111 dias, efetuaram-se as avaliações de fitotoxicidade à cana-de-açúcar e controle à Digitaria sanguinalis , Colopogonio sp, Paspalum distichum e Wedellia paludosa. A interpretação dos dados obtidos mostrou que os tratamentos com hexazinone (954 g/ha) e hexazinone (719 g/ha) + diuron (2048 g/ha) apresentaram diferença estatística em relação à produção quando comparadas à testemunha, além de serem eficientes no controle às plantas daninhas presentes no experimento. Nenhum tratamento prejudicou as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cana-de-açúcar; Plantas daninhas; Hexazinone; Hexazinone + diuron. |
| Ano: 1979 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581979000200003 |
| |
|
|
| Tonieto,T.A.P.; Regitano,J.B.. |
| Green sugarcane harvesting may promote great changes in the dynamics of herbicides in the environment. Our goal was to evaluate the influence of straw decomposition degree on leaching and weed (Ipomoea grandifolia) control efficacy by (14C) tebuthiuron and hexazinone. The presence of straw on the soil surface affected leaching, mainly for hexazinone (leaching reduced from 37 to 5% of the applied amount in the presence of straw). Overall, tebuthiuron showed more efficient control of Ipomoea than hexazinone. The straw decomposition degree affected only hexazinone efficacy that was lowest for the least decomposed straw. Further studies are needed to evaluate the effects of sugarcane straw on herbicides dissipation, particularly on volatilization and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tebuthiuron; Hexazinone; Straw; Decomposition; Sugarcane; Ipomoea spp. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400016 |
| |
|
|
| Tironi,S.P.; Galon,L.; Faria,A.T.; Belo,A.F.; Silva,A.A.; Barbosa,M.H.P.. |
| At different growth stages, weeds present different sensitivities to herbicides. Thus, the registered herbicide rate may be reduced under specific conditions, while maintaining satisfactory weed control. This study evaluated the efficiency of reduced rates of the formulated herbicide mixture Velpar K WG® (hexazinone + diuron) + Volcane® (MSMA) for Brachiaria brizantha control at different growth stages. Optimum weed control efficiency was obtained when applying 50% of the recommended rate in younger plants (plants with one to four leaves). In late applications, it is necessary to increase the herbicide rates and, under these conditions, 90% of the recommended rate for (diuron + hexazinone) + MSMA was estimated to be the most economical one. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum spp.; Hexazinone; Diuron; MSMA. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000400013 |
| |
|
|
| Araldi,Rosilaine; Velini,Edivaldo Domingues; Gomes,Giovanna Larissa Gimenes Cotrick; Tropaldi,Leandro; Silva,Ilca Puertas de Freitas e; Carbonari,Caio Antonio. |
| The process of mechanical harvesting of sugarcane generates a large deposition of straw on the soil surface, providing a coverage that several studies have found important for reducing the weed population. Although such coverage reduces weed infestations, additional management, including chemical control, is still needed. Thus, this study aimed to evaluate the leaching of atrazine, pendimethalin, metribuzin, clomazone, diuron and hexazinone in sugarcane straw. The experiment was conducted at the School of Agronomic Engineering at UNESP (Sao Paulo State University) - Botucatu/SP. The sugarcane straw was collected in the field, cut and placed in quantities of 10t ha-1 in the capsules used as experimental units. The experimental design was completely... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atrazine; Pendimethalin; Metribuzin; Clomazone; Diuron; Hexazinone. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001202106 |
| |
|
|
|
