Weed population dynamics in a wheat-weeds system. Valdivia, Chile

Patricio Montaldo B.1, Flor Alvarado B.1

In a wheat-weeds system, stablished after a permanent pasture, with and without herbicide, the weed population dynamics was studied, evaluating frequency and biomass. It was concluded that the use of herbicides depressed weed populations. Consequently, without herbicides, weed population depressed yield components of wheat. Competence was the most during the period between 38 and 55 days from the seeding date.

1 Facultad de Ciencias Agrarias, Universidad Austral de Chile. Casilla 567, Valdivia, Chile