نوع مقاله : مقاله پژوهشی
نویسنده
موسسه تحقیقات گیاهپزشکی کشور
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
Effect of potassium bicarbonate in management powdery mildew of cucurbits was evaluated to obtain environmentally safe and sound method for prevention and control of the disease. The experiment was carried out in a randomized complete blocks design (RCB) with eight treatments and four replications under greenhouse conditions during 2009-2010. The treatments were different spraying programs of kresoximmethyl (Stroby WG 50%) from strobilorins, tetraconazole (Domark EC 10%) belongs to Triazoles, sulphur (Thiovit WG 80%) plus potassium bicarbonate (Kaliban SP 85%) as well as check treatment (without spraying). The results confirmed the possibility of using potassium bicarbonate at the concentration of 0.5 percent as a part of spraying program in controlling of powdery mildew disease of cucurbits in greenhouse condition. Also, alternate application of kresoximmethyl and tetraconazole and with seven day intervals reduced disease by 94.29 percent compared to the check. Two times spraying of bicarbonate potassium alternatively with tetraconazole and kresoxim methyl as 3rd and 4th or as 2nd and 4th sprayings reduced disease by 87.86 and 86.42 percent, respectively compared to no-spraying check. Three times spraying of bicarbonate potassium following kresoximmethyl or tetraconazole sprayings as 2nd, 3rd and 4th sprayings decreased disease by 75.71 and 74.29 percent, respectively as compared to no-spraying check.
کلیدواژهها [English]
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