Herbicidal potential of (Sorghum bicolor [L.] Moench) for weed control in soybean (Glycine max L.)
Herbicidal potential of (Sorghum bicolor [L.] Moench) for weed control in soybean (Glycine max L.)
- Author(s) Fábio Santos Matos, Larissa Pacheco Borges and Alinne Coelho de Melo
- Year: 2025
- Month: July
- Volume: 65
- Pages: 147-158
This study aimed to identify the allelopathic potential of sorghum for weed control. The no-till field experiment was done in split-plot design. Initially, the entire experimental area was divided into two mains plots, (i). Grain sorghum cultivation and (ii). Corn cultivation to grow straw. Subsequently, the plots were used for soybean cultivation and to conduct a weed control trial constituting the subplots. There were five replicates consisting of five plots of 1.5 x 5 m. Applications of sorghum aqueous extract diluted to 75 % in a volume of 150 L ha-1 were carried out with a jet directed to the weeds at three moments throughout the soybean cycle: at 30, 45 and 60 days after germination. Soil cover with sorghum straw and the use of extract from its leaves represent an important alternative for weed control due to the physical action of straw in restricting luminosity and controlling soil temperature, and due to the chemical effects of allelochemicals on soil seeds and the action of the extract in reducing photosynthesis and controlling weed development.
