بررسی تکمیلی کارایی علف کش جدید (مزوتریون + اس متالاکر + تربوتیلازین) در کنترل علف های هرز مزارع ذرت دانه ای در استان فارس

In order to determine the efficacy of herbicides in corn fields, an experiment was carried out under RCBD with 11 treatments & 4 replications during 2009 in Fars Agri. Res. Center.Treatments included: 1.Nicosulfuron (Cruse or Samson) 2 l/h post emerg.( 3 - 6 leaved corn).2. Furamsulfuron ( Equip ) 2.5 l/h post e. 3. Rimsulfuron ( Titus ) 50 g/h + surfactant post e.4. Ultima (Nicosulfuron + Rimsulfuron) post e. at 175 g/h + Citovaite 0.5%. 5 & 6. Lumax (Mesotrion+ S-metolacholor+ Terbuthlazine) p.e.at 4 & 4.5 l/h. 7&8. Lumax post e. at 4 & 4.5 l/h. 9. 2,4,D at 1.5 l/h post e. 10.Eradican 6 l/h P.P.I .11. Weed-free treatment. Results indicated that Ultima, Cruse, Equip, 2,4,D & Lumax post e. at 4l/h & 4.5 l/h ranked first class. Assessment of density and dry wt of Sorghum halepense showed Cruse, Equip, Ultima & Eradican got the same class as weed free control. Data refering to Amaranthus retroflexus, Portulaca oleracea, Solanum nigrum, Heliotropium europium andAnchusa italica showed Cruse, Equip, Ultima, Lumax post e. at 4 & 4.5 l/h& 2,4,D ranked to weed free class.Pre- emerg. Lumax generally doesn'tcontrol weeds. Pre & post- emerg. Lumax didn't control grasses. Titus didnt control weeds. Ultima suppressed corn at early season but itrecovered later. !

کلیدواژه ها:

علف کش ها ، تربوتیلازین ، ذرت دانه ای ، علف های هرز ، فارس