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| Agostinetto,Dirceu; Vargas,Andrés Antonio Monge; Ruchel,Queli; Silva,Jéssica Dias Gomes da; Vargas,Leandro. |
| ABSTRACT: In Brazil, horseweed is one of the most important weeds because of the resistance to herbicides and high competitive for the crops. A large of losses were reported in major crops such as soybeans, wheat and corn, where the use a no-tillage system and the herbicide resistance promote better establishment. A correct understanding of the way temperature influences germination enables the prediction of the regions with the highest potential for colonization by this weed and thus facilitates its control. The objective of this study; therefore, was to discern the ways temperature affected the germination, viability and longevity of horseweed seeds. Testing was done at 10, 20 and 30°C, while evaluation occurred on days 0, 15, 30, 45 and 60. Seeds were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Secondary dormancy; Depth; Management; Seed quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900202 |
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| Cunha,Ricardo Pereira da; Pedroso,Carlos Eduardo da Silva; Mittelmann,Andréa; Oliveira,Roberto Caetano de; Bohn,Alberto; Silva,Jéssica Dias Gomes da; Maia,Manoel de Souza. |
| This study aims to verify, accurate and precisely, the responses of Italian ryegrass 'BRS Ponteio' cultivar to different frequencies of defoliation for forage production and especially for seed production. For this purpose, a randomized block design experiment with four replications was conducted. Four frequencies of defoliation were applied (zero, one, two, and three) based on the thermal sum, evaluating the rate of leaf appearance (LAR), phyllochron (P), leaf expansion rate (LER), leaf senescence rate (LSR), stems expansion rate (SER), tillering rate (TR), leaf life span (LL), forage production, proportion of leaf blades, stems plus sheaths, senescent material, and inflorescences, as well as seed production. Second defoliation noticeably altered the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum Lam.; Defoliation frequency; Leaf expansion rate; Leaf senescence rate; Phenotypic. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100053 |
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| Cunha,Ricardo Pereira da; Corrêa,Marciabela Fernandes; Schuch,Luis Osmar Braga; Oliveira,Roberto Caetano de; Abreu Junior,José de Souza; Silva,Jéssica Dias Gomes da; Almeida,Tainan Lopes de. |
| A cada ano são descobertos e utilizados novos produtos para o tratamento de sementesna cultura da soja (Glycine max L. Merril), visando aumentos de produção. Há a necessidade de conhecer a influência desses produtos sobre o desenvolvimento das plantas, a fim de obter sucesso na atividade. O objetivo do experimento foi avaliar o efeito de principais produtos aplicados via tratamento de sementes, sobre a morfologia de plantas de soja, em diferentes fases de desenvolvimento da cultura, bem como, sobre os componentes do rendimento e produtividade. Os produtos utilizados foram: tiametoxan; [abamectina+tiametoxan + fludioxonil]; [fipronil + tiofanatometilico + piraclostrobina]; [imidacloprido + tiodicarbe]; CruiserAdvanced(r); carboxamida; abamectina;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max (L). Merril; Inseticidas; Crescimento; Produção. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001761 |
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