İlker Kurbetli

Bati Akdeniz Agricultural Research Institute, Antalya, Turkey · Plant Health Department

In 2016 and 2017, circular and irregular leaf spots on globe artichoke (Cynara scolymus) were observed in seven locations of the Mediterranean region of Türkiye. In a preliminary microscopic examination, fungal spores in the leaf spots were similar to the genus Cladosporium. However, three different methods (direct transferring, agar-plate, and blo...

A total of 65 isolates of Rhizoctonia spp. were isolated from necrotic roots of 425 symptomatic bean (Phaseolus vulgaris) plants collected from nine provinces of Türkiye including Balıkesir, Burdur, Bursa, Eskişehir, Karaman, Konya, Kütahya, Nevşehir and Niğde in 2018 and 2019. Fifty isolates with multinucleate (MN) hyphae were characterized as Rhi...

Symptoms of decline were first observed on oak trees (Quercus robur) in Emirgan Grove, İstanbul in August 2015. Symptoms included sparse canopies, crown dieback and bleeding cankers on the trunk, usually just above soil level, suggesting Phytophthora infections. Most affected trees lost foliage. No Phytophthora species were isolated from bleeding l...

Fusarium oxysporum f.sp. dianthi (Prill and Delacr.) (Fod) is a causal agent of wilt disease of carnation (Dianthus caryophyflus L.) with its different physiological races. Although eleven physiological races of Fod have been reported in the world, a polymerase chain reaction (PCR)-based diagnostic tool was developed for identification of Fod races...

Abstract Macrophomina phaseolina is a polyphagous fungus causing substantial yield losses in many plant species. In 2017, M. phaseolina was found to be causal agent of wilting and stunting symptoms of globe artichoke (Cynara scolymus) in the Mediterranean region of Turkey. There is no knowledge about M. phaseolina in globe artichoke and applicable...

Globe artichoke (Cynara scolymus) is an economically important plant that is cultivated in more than 30 countries. The main biotic constraint to globe artichoke cultivation is Verticillium wilt caused by Verticillium dahliae. In 2017, V. dahliae was found on globe artichoke in three locations (Manavgat-Cevizler, Kumluca-Hasyurt and Kumluca-Salur) o...

Fusarium oxysporum f.sp. dianthi (Prill and Delacr.) (Fod) is a causal agent of wilt disease of carnation (Dianthus caryophyflus L.) with its different physiological races. Although eleven physiological races of Fod have been reported in the world, a polymerase chain reaction (PCR)-based diagnostic tool was developed for identification of Fod races...

Globe artichoke (Cynara scolymus L.) is an economically important plant that is mostly grown in Mediterranean Basin in the world. In 2016 and 2017, chlorotic spots on adaxial surface but white fungal patches abaxial surface of leaves of globe artichoke were observed in the Western Mediterranean Region of Turkey. To determine causal agent of these s...

Background Aggressive biotype ( Trichoderma aggressivum f. aggressivum ) of green mold is one of the main biotic factors limiting button mushroom ( Agaricus bisporus ) cultivation. Due to issues such as fungicide resistance, cost, and adverse effects, biological control seems to be an applicable management method against the green mold in button mu...

Presence of Trichoderma aggressivum f. aggressivum (green mold disease) either in compost or casing soil causes significant yield losses in button mushroom (Agaricus bisporus) cultivation. The aim of this study was to examine biotic interactions between A. bisporus and T. aggressivum f. aggressivum in compost and casing soil. In the study, strains...

Globe artichoke (Cynara scolymus L.) is an herbaceous, edible plant and is cultivated for its immature head (bud) part. In 2016 and 2017, significant damages due to rots on the heads of globe artichoke plants were observed in the farmer fields in the Western Mediterranean Region of Turkey. To determine the cause of the rots, samples were taken from...

Globe artichoke (Cynara scolymus L.) is an economically important plant that is cultivated over 30 countries in the world. In 2017, wilting and lodging symp-toms were observed on globe artichoke plants in three locations (Serik-Gebiz, Serik-Karadayı and Gazipaşa-Bakılar) in the Western Mediterranean Region of Turkey. To determine the cause of the s...

Dieback and trunk canker symptoms were observed on centenarian plane trees (Platanus orientalis) in Gezi Park and Dolmabahçe Avenue in İstanbul province of Turkey in August 2015. Reddish-brown canker lesions covered approximately half of the tree trunk, from roots to top of the trees. The external symptoms were chlorosis, defoliation and dieback, a...

Since the summer 2017, severe decline symptoms have been observed on 10‐ to 25‐year‐old avocado trees in almost all commercial orchards planted in the Mediterranean coastal region of Turkey. Young, newly planted trees in infected orchards were also affected by the disease. Affected trees showed wilting, leaf discoloration, defoliation and severe di...

Pomegranate (Punica granatum) is an important fruit-tree at southwestern Turkey, as this region (Antalya and Muğla provinces) produces and exports the great majority of the pomegranate fruits of the country. Pomegranate orchards showing severe dieback and tree mortality in the region were surveyed to determine the role of Phytophthora spp. in sympt...

Agaricus bisporus, called as button mushroom, constitutes majority of the cultivated mushrooms in the world. Green mould, caused by Trichoderma species, is a destructive fungal disease causing epidemics in A. bisporus cultivation. In 2015, 2016 and 2017, a total of 71 samples including compost, casing soil and mushroom tissues were collected from m...

White clover (Trifolium repens L.), commonly accepted as a forage crop, is a perennial legume plant. Environmentalists, park and garden designers pay attention to white clover due to its characteristics such as covering the ground, resistance to stepping, nice view, and short growing. Additionally, because of its tolerance to the shade, it is used...

White clover (Trifolium repens L.), commonly accepted as a forage crop, is a perennial legume plant. Environmentalists, park and garden designers pay attention to white clover due to its characteristics such as covering the ground, resistance to stepping, nice view, and short growing. Additionally, because of its tolerance to the shade, it is used...

Bu çalışmada, kiraz (Prunus avium L.) ağaçlarında kuruma ve geriye ölüm problemine neden olan Sitospora kanserine neden olan Cytospora türlerinin tespitii, bölgemizdeki yaygınlığının belirlenmesi amaçlanmıştır. Sürvey, 2013-2014 yıllarında kiraz bahçelerinde Lazarov (1961) yöntemine göre yapılmıştır. Afyon, Ankara, Konya ve Isparta illerine ait 8 i...

In 2015 and 2017, potato storages were surveyed for the prevalence of atypical potato tuber rots in Nevşehir and Isparta Provinces of Turkey. About 4–5 months after harvesting, 80% of the potatoes cv. Melody, that were stored at 4–5 °C and 65–75% relative humidity, were affected by the disease. The symptoms of the disease were similar to gangrene c...

Sphaeropsis sapinea tip blight is one of the most destructive fungal diseases of pine trees in the world. It causes shoot blight, canker, collar rot, root disease and blue stain of Pinus spp. As a result of surveys performed in the parks, recreation areas and groves in Istanbul and Bursa provinces in January, June and October 2015, it was observed...

More than 400.000 tons of pears (Pyrus communis) are produced in Turkey every year making the country one of the largest producer worldwide. Decline symptoms were observed on 5- to 6-year-old pear trees in commercial orchards of Korkuteli district of Antalya province, the largest pear growing region of Turkey in summer 2015. Symptoms in affected tr...

Oral Abstract-Fitopatoloji Batı Akdeniz Bölgesinde buğdayda fungal yaprak hastalıklarının yaygınlığı ve konukçu tepkilerinin belirlenmesi Mehmet AYDOĞDU 1 , İlker KURBETLİ 1 1 Batı Akdeniz Tarımsal Araştırma Enstitüsü, Antalya ÖZ Ülkemizde buğday diğer bölgelerde olduğu gibi Batı Akdeniz Bölgesinde de yaygın olarak yetiştirilen önemli bir tarım ürü...

Approximately 415,000 tonnes of strawberries (Fragaria × ananassa) are produced in Turkey annually, making the country one of the leading producers in the world (FAO, 2016). In 2016, symptoms of decline were observed on strawberries grown in greenhouses in the Serik district of Antalya province, Turkey. These included yellowing of foliage, wilting,...

This study was conducted in order to determine the in vitro and in vivo efficacy of some chemicals against Phytophthora nicotianae, which is one among the Phytophthora spp. that are responsible for tomato root and crown rot disease. We tested various active substances against this disease pathogen. In the experiment, varied concentrations of "metal...

Cevizin ana hastalığı Gnomonia leptostyla (Fr.) Ces et de Not.’nın neden olduğu antraknozdur. Hastalık için uygun koşullar oluştuğunda etmen oldukça tahripkârdır. Bu çalışma, ülkemizin önemli ceviz üretim bölgelerinden biri olan Çorum ilinin Oğuzlar ilçesindeki bir ceviz bahçesinde, 2005-2011 yılları arasında yürütülmüştür. Çalışma süresince hastal...

This study was carried out to examine responses of some bread wheat varieties against two-foliar disease, Septoria leaf blotch (SLB) and Powdery mildew (PM) under natural enfection conditions of West Mediterranean Region of Turkey. During the growing season in 2015-2016, field trials were set up a randomized complete block design with four replicat...

Sour cherry is a very important commercial crop of Turkey. In a newly established orchard in Ankara province of Turkey, some of young sour cherry trees did not leaf out or collapsed after a while turning green in spring, 2014. Lateral and hairy roots of symptomatic trees showed poor growth. Occurrence of necrotic and decay tissues girdling the whol...

Three- to four-year-old Japanese plum trees (Prunus salicina L.) in a commercial orchard of Antalya Province showed symptoms of decline in July-August 2015. The aerial symptoms were leaf discoloration and twig dieback, and most of the affected trees were leafless. Reddish brown cankers developing from the root to the stem base were observed. Latera...

Globe artichoke (Cynara scolymus L.), an herbaceous perennial plant native to the Mediterranean Basin, is cultivated in more than 25 countries worldwide. In Turkey, artichokes are usually planted by transplanting suckers or buds. In commercial plantings, wilting symptoms on 1-year-old plants were observed in September 2014 on 3.0 ha of globe artich...

Decline symptoms were observed on young almond trees in commercial orchards of Adıyaman province of Turkey in 2013. Symptoms in affected trees included yellowing of foliage, cankers on roots, crowns and stem base, and dieback. An isolate of Phytophthora sp. was consistently isolated from necrotic tissues from taproots and crowns of symptomatic tree...

Young olive trees showing wilting and trunk cankers were observed in an orchard in Antalya province, Turkey. The aerial symptoms associated with reddish brown cankers expanding from the root collar to the stem were leaf discoloration, defoliation, and twig dieback. A Phytophthora sp. was consistently isolated from necrotic root and crown tissues of...

Phytophthora cactorum (Lebert & John) Schröeter is the most widespread plant pathogen causing root and crown rot of apple worldwide, also in Turkey. Effect of different concentrations of some fungicides against mycelial growth of P. cactorum in culture medium was studied in 2011. EC50 values of the fungicides for two pathogen isolates were 3.6 and...

Pear ( Pyrus communis ) has been grown on approximately 23,500 ha in Turkey with an annual production of 462,000 tonnes, Turkey being among the top five countries for pear production in the world (Anonymous, 2013). In May 2012, losses of …

Sweet cherry is a major commercial crop in Turkey, the most important producer of the fruit worldwide. Sweet cherry decline was observed in an orchard in Ankara province of Turkey. Affected young trees exhibited reduced tree vigor, yellowing and wilting of leaves, and dieback symptoms resulted in tree death. A Phytophthora sp. was consistently isol...

A non-papillate, heterothallic Phytophthora species first isolated in 2001 and subsequently from symptomatic roots, crowns and stems of 33 plant species in 25 unrelated botanical families from 13 countries is formally described here as a new species. Symptoms on various hosts included crown and stem rot, chlorosis, wilting, leaf blight, cankers and...

Vine decline of kiwifruit was observed in an orchard in Bartın province of Turkey. Affected vines exhibited poor terminal growth, leaf discoloration and various degrees of dieback, including complete vine death. Symptoms were observed in the field on roots, crowns and stems. Two Phytophthora species were isolated from decayed cortical roots and low...

Walnut decline caused by Phytophthora sp. occurred in an orchard in Sakarya province in Turkey. Affected young trees showed poor growth, leaf discolouration, root and crown rot and eventual death. A Phytophthora sp. isolated from necrotic taproots and crown tissues. The causal agent of the disease was identified as Phytophthora cinnamomi by morphol...

Almond decline was found in the nurseries and orchards in Ankara, Çankırı, Düzce and Kayseri provinces in Turkey, between the years 2009-2011. Three Phytophthora species were isolated from necrotic root and crown tissues or the rhizospheres of almond trees exhibiting typical symptoms of Phytophthora root and crown rot. Two of them were identified a...

Arborvitae (Thuja orientalis) is economically the most important ornamental plant in Turkey. In the spring of 2008, a leaf disease was observed on 80-90% of arborvitae seedlings in a commercial nursery in Sakarya province (northwest Turkey). Initial symptoms included chlorosis of the youngest leaves that later turn brown and appear scorched. A fung...

Almond (Prunus dulcis) production is currently increasing in Turkey. Losses of approximately 1% associated with root and crown rot of almond seedlings were observed in two commercial nurseries in Ankara and Duzce provinces in 2009. Aboveground symptoms were leaf chlorosis and wilt. Feeder roots were decayed, necrosis occurred on taproots and basal...

In this study, almond orchards in Isparta province were surveyed for investigation of diseases during the years 2007–2008. Fungal pathogens, Polystigma ochraceum [(Wahl.) Sacc.], Wilsonomyces carpophilus [(Lév.) Adaskaveg, Ogawa, & E. E., Butler] and Phellinus tuberculosus [(Baumg.) Niemelä] were determined on the almond samples. So as to determine...