Effect of Clodinafop-propargyl on Phalaris paradoxa L. (awned canary-grass) in wheat crop

Abstract

Abstract: Phalaris paradoxa is problematic weed that decrease considerably wheat crop yields. The aim of this study is to investigate the effect of Clodinafop-propargyl on Phalaris paradoxa infestation in a soft wheat crop. The experimental design was Randomized Complete Block Design (RCBD) with three replications. Each block contained 4 elementary plots, 3 plots of which were treated with three rates of application of Clodinafop-propargyl and one untreated control plot. Observations concerned Percentage of Phalaris paradoxa density reduction and biomass reduction. Results showed that treatments with Clodinafop-propargyl at 60 g/ha and 80 g/ha gave the best control of Phalaris paradoxa infestations recording respectively 96.2% and 98.5% of Phalaris paradoxa density reduction and 95.5% and 99.3% of Phalaris paradoxa dry biomass reduction. Clodinafop-propargyl at 40 g/ha recorded lower efficacies 77.1% and 82.3% respectively on Phalaris paradoxa density reduction, and Phalaris paradoxa dry biomass reduction.