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| AGOSTINETTO,D.; TAROUCO,C.P.; NOHATTO,M.A.; OLIVEIRA,C.; FRAGA,D.S.. |
| ABSTRACT Ryegrass is an annual cycle Poacea, often considered as a weed in wheat crops. The goal of this study was to analyze oxidative stress and enzyme activity of wheat and ryegrass cultures in response to stress caused by the competition between crop and weed, in two development stages. The experiment was conducted in completely randomized design, with eight replications, in replacement series, with a population of 64 plants per pot. Treatments consisted of proportions of ryegrass and wheat plants arranged in replacement series. The tested proportions were: 100/0 (pure wheat stand), 75/25, 50/50, 25/75 and 0/100% (pure ryegrass stand). The evaluated variables were: hydrogen peroxide (H2O2) content, thiobarbituric acid-reactive species (TBARS),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Lolium multiflorum; Stress; Competitiveness. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100233 |
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| AGOSTINETTO,D.; TAROUCO,C.P.; LANGARO,A.C.; GOMES,J.; VARGAS,L.. |
| ABSTRACT The main limiting factors for the productive potential of wheat crops are related to the competition with weeds for resources such as water, light and nutrients. Nitrogen (N) is an important nutrient used to maintain crop productivity, as well as promoting the competitive ability of crops and therefore suppress the weed growth. In this context, the goal of this study was to evaluate the effects of wheat plants in competition with ryegrass under different levels of nitrogen fertilization. Treatments were arranged in a factorial design, where factor A consisted in nitrogen rates (0, 60, 120, 180 and 240 kg ha-1) and factor B consisted in ryegrass and wheat plants ratios, which were: 100/0 (pure stand of 64 wheat plants), 50/50 (32 wheat plants and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrogen; Replacement series; Triticum aestivum; Lolium multiflorum. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100247 |
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