Strategies for the control of Avena sterilis in winter wheat production systems in central Spain

avena sterilis barbecho chemical control control cultural cultivos de invierno cultural control culture d'hiver economia economics economie escarda espagne fallow herbicidas herbicide herbicides integrated control lucha integrada lutte chimique lutte culturale malezas mathematical models mauvaise herbe methode methods modele modelos models plantas accidentales profitability rentabilidad simulation models spain trigo triticum triticum aestivum volunteer plants weed control weeds wheats winter crops