Investigation efficacy of native and foreign Fenoxaprop - p - ethyl for controlling wild Oat (Avena ludoviciana)

This study was carried out during 2003-2004 to investigate efficiency product of Fenoxaprop-p-ethyl for control Avena luduviciana in Fars agriculture and natural resources research center. The experiment was done under RCBD with 4 replications and 14 treatments. Treatments included Fenoxaprop-p-ethyl from Golsam company, Gia and Bayer)Germany) companies at four doses: 0.4, 0.8, 1.2 and 1.8 (l/h). Spraying was done at tillering stage of wheat. Effect of treatments were determined on decreasing percent of weed density, weed dry matter and wheat yield. Statistical analysis of the dose response data were fitted to a Log- Logistical model. Dry matter and density response of the Avena ludoviciana to the herbicides were shown well by Log- Logistical modle. The efficiency of Fenoxaprop-p-ethyl formulations from Foreign company)German) at 1.2 l/h was very good (98%).Also, efficiency of formulations from Golsam company at the highest dosage (1.8 l/h) was very good(96%), and efficiency of formulations from Gia company at the (1.8 l/h) was moderate(92%). Yield reduction in the highest dosage of Bayer company)Germany) formulation was more less than the others.