نوع مقاله : مقاله پژوهشی
نویسندگان
1 بخش تحقیقات بیماری‌های گیاهی، موسسه تحقیقات گیاه‌پزشگی، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
2 بخش تحقیقات گیاهپزشکی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی جنوب کرمان، سازمان تحقیقات، آموزش و ترویج کشاورزی، جیرفت، ایران.
3 بخش تحقیقات گیاهپزشکی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی هرمزگان، سازمان تحقیقات، آموزش و ترویج کشاورزی، بندرعباس، ایران،
4 Researcher, Plant Protection Research Department, Agricultural and Natural Resources Research Center of Tehran, AREEO, Varamin, Iran.
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
The gray mold disease caused by Botrytis cinerea is one of the most important diseases of pepper worldwide. In this research, the efficacy of Signum (pyraclostrobin 6.7% + boscalid 6.7%) on the control of pepper gray mold disease was evaluated under laboratory and greenhouse conditions compared with Captan fungicide. The research was carried out under laboratory condition as a completely randomized design and under greenhouse as a completely randomized block designs in the Hormozgan and the South of Kerman regions. The treatments included the concentrations of 1, 1.5 and 2g/L of the target fungicide, Captan 3g/L and control (without fungicide). Foliar spraying started once the symptoms of disease were observed and continued until the infection reached up 75% in the control treatment. It was repeated once every seven to 10 days and three times in total. The disease severity index was calculated using a scoring system and the results finally were compared. Under laboratory, results showed that all the treatments reduced the radial growth of the fungal pathogen compared to the control, and a significant difference was observed at the level of 1%. The results in greenhouse showed that the target fungicide Signum (pyraclostrobin + boscalid) at the concentrations of 2 g/L and 1.5 g/L was superior with average control efficiency of 93.8 and 88.25%, respectively. In order to reduce the use of fungicide, application of the fungicide at concentration of 1.5g/L and maximum three times with an interval of 7 to 10 days is recommended to control the gray mold disease of greenhouse pepper.
کلیدواژه‌ها [English]
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