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| FIPKE,M.V.; VIDAL,R.A.. |
| ABSTRACT : Glyphosate is one of the main herbicides used to control ryegrass. The objective of this research was to evaluated whether the glyphosate dose-response curve is affected by density of ryegrass plants in two phenological growth stages. To attend this objective, two experiments were carried out in greenhouse (one with Lolium multiflorum and another with Lolium rigidum) and two under field conditions. In the greenhouse experiments, the experimental design was a completely randomized design in a factorial scheme, with factor A as plant density and factor B as glyphosate doses. In the field, two experiments were carried out in a randomized block design in a split-plot scheme. Plots consisted of glyphosate doses (0, 40, 80, 120, 160, 250, and 350 g... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum L.; Lolium rigidum; Time of application; Tolerance. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100224 |
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| Toebe,Marcos; Cargnelutti Filho,Alberto; Carvalho,Juliana Oliveira de; Tartaglia,Francieli de Lima; Cortes,Alessandra Ferreira; Mello,Anderson Chuquel; Melo,Patrícia Jesus de. |
| ABSTRACT: The objective of this research was to determine the optimal plot size and the number of replications to evaluate the fresh matter of ryegrass sown to haul. Twenty uniformity trials were conducted, each trial with 16 basic experimental units (BEU) of 0.5 m2. At 117, 118 and 119 days after sowing, the fresh matter of ryegrass in the BEUs of 5, 10 and 5 uniformity trials, respectively, were determined. The optimal plot size was determined by the maximum curvature method of the variation coefficient model. Next, the replications number was determined in scenarios formed by combinations of i treatments (i = 3, 4, ... 50) and d minimum differences between means of treatments to be detected as significant at 5% of probability by the Tukey test,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum L.; Uniformity trials; Experiment planning; Maximum curvature method.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100204 |
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| Tunes,Lilian Madruga de; Pedroso,Daniele Cardoso; Badinelli,Pablo Gerzson; Tavares,Lizandro Ciciliano; Rufino,Cassyo de Araújo; Barros,Antonio Carlos Souza Albuquerque; Muniz,Marlove Fátima Brião. |
| O presente trabalho teve por objetivo analisar a metodologia do teste de envelhecimento acelerado para avaliação do potencial fisiológico de sementes de azevém, bem como verificar a possibilidade do uso de solução não saturada e saturada de NaCl como opção para controle da absorção de água pelas sementes durante a realização do teste, sem reduzir sua sensibilidade. Foram utilizados quatro lotes de sementes, submetidos aos testes de germinação, emergência de plântulas, índice de velocidade de emergência e envelhecimento acelerado, empregando-se os períodos de exposição de 24, 48, 72 e 96h, com e sem solução salina (NaCl). A utilização de solução não saturada e saturada de NaCl diminui a absorção de água pelas sementes de azevém durante o teste de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum L.; NaCl; Germinação; Vigor. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000100006 |
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