Influence of Drought on Graminicide Phytotoxicity in Wild Oat ( Avena fatua ) Grown under Different Temperature and Humidity Conditions

摘要: Controlled environmental experiments were carried out to determine the phytotoxicity of several graminicides on wild oat (Avena futua L.) as influenced by combination drought and temperature stress or low relative humidity. Compared with unstressed conditions (20/15°C plus adequate soil moisture), imazamethabenz was reduced significantly when plants exposed a high (30/20°C) stress. Imazamethabenz almost much alone combined When herbicides applied subjected temperature, observed reduction in from greatest least was: fenoxaprop = diclofop > flamprop imazamethabenz. Fenoxaprop performance most inhibited although lesser degree, alone, action. High had an adverse effect efficacy at lower application rates. Raising rates 400 g ha−1 overcame inhibition caused but only partially alleviated temperature. grown under regimen imposition little did reduce phytotoxicity. At 25/15°C greatly no significant impact any examined, regardless moisture regimen.