Weed management in winter wheat (Triticum aestivum L.) influenced by different ...

• Autor(es): Calado, José ; Basch, Gottlieb ; Barros, José ; Carvalho, Mário
• Data: 2013
• Identificador Persistente: http://hdl.handle.net/10174/8790
• Origem: Repositório Científico da Universidade de Évora
• Assunto(s): No-till system; Weeds; Wheat; Herbicides
• Tipo de Documento: Artigo
• Idioma: Português
• Editor(es): Amusa, N.A.; Florou-Paneri, Panagiota; TABAN, Suleyman; Choi, Hyo; Amer, Mahmoud; MPOFU, IRVIN; AYASAN, Tugay

Descrição

In this study, weed management in winter wheat influenced by different soil tillage systems was investigated. The experiment was carried out under Mediterranean conditions on a Luvisol, during two growing seasons (1996/1997 and 1999/2000). Two factors (different soil tillage systems and post-emergence weed control) were studied, with two levels each: Two soil tillage systems and two levels of post-emergence weed control. The conventional soil tillage system, performed for seedbed preparation after the emergence of a high percentage of weeds, increases the appearance of monocotyledons, especially Lolium rigidum Gaud. in wheat crops, when compared to their establishment in no-till system. As a consequence of the higher number of monocotyledons there is an increase in weed-crop competition. Without post-emergence herbicide treatment, the wheat crop yield is lower in the treatments with the conventional soil tillage system and yield reduction is less under no-till system compared to the respective treatments with post-emergence herbicide application.