The objective of this work was to evaluate the effect of the herbicides penoxsulam (ALS-inhibiting herbicide) and clomazone (carotene biosynthesis-inhibiting herbicide) applied in pre-emergence at increasing rates, submitted to water management (19, 24 and 29 days after emergence - DAE) on the initial establishment and growth of rice BRS Pelota. Penoxsulam showed low phytotocixity both in shoots and roots of rice plants, with greater effects on the roots. Water availability until 24 DAE associated with penoxsulam rates up to 54 g ha-1 and clomazone rates up to 300 g ha-1 resulted in minimal damages to rice shoots and roots. However, clomazone rates above the recommended, associated with water availability 19 DAE caused high phytotoxicity to rice plants.
clomazone; penoxsulam; Oryza sativa; growth
