Akademik Veri Yönetim Sistemi
Research on Crops, cilt.12, sa.2, ss.588-592, 2011 (SCI-Expanded)
During spring 2008 growing season, quantitative disease surveys were conducted to identify the fungal disease agents causing root-foot rot and foliar diseases of pea (Pisum sativum L.) plants growing in different fields in Amik Plain of Hatay province of Turkey. Disease surveys were conducted at three major plant growing stages such as post-emergence (seedling stage), flowering and fruiting-harvesting stages. The disease survey was conducted in randomly selected pea fields in major pea-growing locations. The results of fungal isolations from diseased pea roots taken at regular intervals over the entire growth period have indicated that the most frequently encountered and widespread soil-borne fungal disease agents were Fusarium oxysporum, Rhizoctonia solani, Sclerotinia sclerotiorum, Thielaviopsis basicola and Pythium spp. causing foot, root and collar rots which were found at the seedling stages of pea plants growing especially in fields which have shallow groundwater problems. Observation in several pea fields showed that Ascochyta blight caused by Mycosphaerella pinodes, leaf and pod spot caused by Ascochyta pisi, and Alternaria leaf and stem spot caused by Alternaria alternata were the most frequently observed (55.0, 67.0 and 47.0% of the fields inspected, respectively) foliar fungal disease agents at both the flowering and fruiting stages. Phoma medicaginis var. pinodella was also observed and isolated from necrotic pods. Incidence and severity of the A. pisi were especially higher on local population of plant variety which produces small pods (spring type). Originates of pea cultivars seeds sown in the region were unknown by the local growers. Powdery mildew (Erysiphe pisi) and downy mildew (Peronospora viciae) were observed on local varieties with minor importance.