Pendimethalin herbicide toxicity to rice plants and barnyard grass invasion have increasingly affected the productivity of direct-seeded (DSR) in fields. Whether how promote DSR sustain weed management depend on appropriate pre-emergence application rate minimise its ecosystem. Pot experiments were conducted determine effects pendimethalin rates (1.5, 1.75, 2.0 kg a.i. ha−1, two control treatme...

Gene mutations conferring herbicide resistance may cause pleiotropic effects on plant fitness. Knowledge of these effects is important for managing the evolution of herbicide-resistant weeds. An Echinochloa crus-galli population resistant to acetolactate synthase (ALS) herbicides was collected in a maize field in north-eastern Italy and the cross-resistance pattern, resistance mechanism and fit...

Thirty-seven commercial aldehydes containing aliphatic chains and aromatic rings as well as heteroaromatic rings were evaluated for their inhibitory activities against Chinese amaranth (Amaranthus tricolor L.) and barnyardgrass (Echinochloa crus-galli (L.) Beauv). Polysorbate 80 (Tween® 80) was used as a surfactant and the research was preliminarily conducted at 400 μM of all aldehydes. Among t...

Natural products are one of the resources for discovering novel pesticide leads. Here, by molecular hybridization between natural enamino diketone skeleton and reported herbicide lead compound I, a series 3-(1-aminoethylidene)-6-methyl-2H-pyran-2,4(3H)-dione derivatives (APD) were rationally designed, synthesized tested herbicidal activity in greenhouse. The bioassay results showed that most ta...

The plant Plumbago rosea Linn., belonging to the Plumbaginaceae family, is an important medicinal herb distributed in part of Southeast Asia, and there are many reports its pharmacological properties. However, allelopathic activities P. have not been examined. Thus, present study was conducted assess activity identify substances. aqueous methanol stem extract significantly suppressed seedling g...

ABSTRACT: The resistance of Echinochloa crus-galli (barnyardgrass) to cyhalofop-p-butyl has already been confirmed in rice fields Santa Catarina, Brazil. However, it is not known if this affects other ACCase inhibitors. This study evaluated the occurrence cross-resistance biotypes from main rice-growing regions Catarina research was conducted a greenhouse, using completely randomized design wit...