Control of Orobanche crenata in Vicia narbonensis by glyphosate

The tolerance of narbon bean (Vicia narbonensis L) to glyphosate was studied under field conditions. Its effectiveness was measured both in terms of broomrape shoot control and seed yield performance. When broomrape was sprayed twice with glyphosate (while the broomrape attachment to the narbon bean roots was at the tubercle stage of development and 14 days later), there was an increased seed yield as compared to the control treatment. The best dose range of application was 35–67 g a.i. ha−1, depending on the weather conditions.