Study on the Efficacy of Various Fungicides of Rapeseed Sclerotinia stem Rot Control Through Plant Shoot Spraying
2004
Dalili, Ali Reza | Afshari.Azad, Homayun | Pak Daman, Babak
Sclerotinia stem rot of rapeseed caused by Sclerotinina sclerotiorum is considered as one of the most important disease of the crop in north of Iran .Chemical control, because of the compatibility with other premunition and control ways, have paramountly important. In this investigation efficacy of 5 fungicides, Benomyl (WP50% ),Rovral TS (WP52.5%),Thiophanate methyl (WP70%) and Ridomyl + Mancozeb (WP72.5%) in a completely randomized desing with 3 replicates were evaluated to decreasing of disease incidence and increasing of the yeild in joibar area for 2 years. For this study spraying was done at early of flowering period . Results which obtained by comparison of the means in different treatments indicated that there was significant difference ( P0.01) among treatments in disease incidence ,disease index and yield. Result were showed the most effective treatments in control of the disease were Benomyl (WP50%) and thiophanate methyl(WP70%) that increased yeild about 198 and 266 kg/h respectivly . Rovral TS (WP52.5%) and Tebuconazole(EW 250) showed the second most effectivness in control of the disease and Ridomil+ Mancozeb ( WP72.5%) no difference with control.
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