ASLANPAY, Burcu Yüzüncü Yıl Üniversitesi - Ziraat Fakültesi - Bitki Koruma Bölümü, Turkey , DEMİR, Semra Yüzüncü Yıl Üniversitesi - Ziraat Fakültesi - Bitki Koruma Bölümü, Turkey

The Effects of Arbuscular Mycorrhizal Fungus (AMF) and Humic Acid on the Growth of Pepper (Capsicum annuum L.) Plant and Root Rot Disease Caused by Phytophthora capsici Leonian

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In this study, the effects of singular and double combinations of Arbuscular Mycorrhizal Fungi (AMF) and humic acid (HA) were investigated on the growth of pepper (Capsicum annuum L.) and rot root disease caused by Phytophthora capsici Leonian which has been known as an important problem of pepper cultivation and leading yield losses. Under controlled conditions, four F1 pepper cultivars (Ergenekon, Bafra, Sirena and Yıldız) were inoculated with three different AMF strains (Glomus intraradices, G. mossea and Gigaspora margaritha) in order to determine the most appropriate combination of pepper cultivar and AMF species to be used in studies. While each AMF species colonized between 3.05-38.66% on four pepper varieties, mycorrhizal dependency ratio changed between 2.52-20.64%. The best affinity was determined between Bafra x G. mosseae combination in point of not only colonization but also mychorrhizal dependency and this combination used in the second experiment. At the end of the study, it was found that the applications of AMF and humic acid were encouraged plant growth positively. Similar results were also determined in terms of plant macro-micro nutrient contents, and especially nutrient content of plants with AMF significantly increased. Therefore, single or combined applications of AMF and HA were effective by reducing the incidence of disease severity between 37.6- 55.6%.

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Pepper , Arbuscular Mycorrhizal Fungus (AMF) , Humic Acid (HA) , Phytophthora capsici Leonian

Yuzuncu Yil University Journal Of Agricultural Sciences

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