Tair Esenalı Uulu

Article | 2021 | Phytoparasitica49 ( 3 )

This study was conducted in Meram district of Konya province (Turkey) in 2018 and 2019 to evaluate the efficacy of mating disruption against the tomato leafminer, Tuta absoluta in an open-field tomato growing area. Three pheromone-treated fields and three control fields were used to evaluate the effectiveness of mating disruption in both years. In pheromone-treated fields, mating disruption pheromone was applied once at a rate of 2500 g/ha with a caulking gun. In control fields, only pheromone traps were hung for monitoring and comparing the pest population. Male captures in monitoring pheromone traps and infestation rates of tomato . . . plants by T. absoluta were recorded weekly. The mean number of males captured in the traps per week in pheromone-treated fields in 2018 and 2019 was 120.86 /- 16.82 and 69.90 /- 15.70, respectively. In control fields, the mean number of males captured in the traps per week in 2018 and 2019 was 299.73 /- 16.82 and 230.75 /- 15.70, respectively. The mean percentage of infestation of the pest was 4.40 /- 0.56?n pheromone-treated fields, while it was 11.80 /- 0.56?n control fields in 2018. In 2019, the mean percentage of infestation of the pest was recorded in pheromone-treated and control fields as 1.88 /- 0.52?nd 7.39 /- 0.52?respectively. As a result of the study, it was determined that the mating disruption application against T. absoluta was successful in all three pheromone-treated fields when compared to control fields in both years. This technique was tested for the first time against the tomato leafminer in Turkey with this project More less

İsmail ERPER

Article | 2020 | Phytoparasitica48 ( 2 )

A total of 30 Rhizoctonia isolates were collected from plants with Rhizoctonia-like symptoms in kale growing areas in Ordu province during the 2014-2015 growing seasons. All the isolates were identified using nuclear staining tecnique and the nucleotide sequence analysis of the nuclear rDNA internal transcribed spacer (ITS)1-5.8S-ITS2 region. The most prevalent anastomosis group (AG) was AG 2-1 (36.67?f isolates), followed by AG-A (30? AG 4 HG-I (10? AG 5 (6.67? AG-Fb (6.67? AG-E (6.67?and AG-K (3.33? Cultural characteristics showed that randomly selected RsCB-13 (AG 2-1), RsCB-20 (AG 4 HG-I), RsCB-21 (AG 5), RCB-16 (AG-A), RCB-7 (A . . .G-E), RCB-22 (AG-Fb) and RCB-26 (AG-K) isolates representing each AG had greyed-yellow, brown, white-orange and greyed-orange colony colors, and optimum growth temperatures of the isolates ranged from 25.21 to 27.67 degrees C. Pathogenicity tests on the seedlings of kale cv. Arzuman revealed generally significant virulence differences between AG 2-1 and AG 4 HG-I isolates, and other Rhizoctonia isolates (P < 0.05). In addition, with the exception of several AG 2-1 isolates, the isolates of both groups caused severe root and stem rot and seedling deaths, unlike the relatively low and moderate virulent AG 5, AG-E, AG-Fb and AG-K isolates. However, AG-A had very low virulence and did not affect plant growth parameters such as plant height, shoot and root dry weights and root length while the isolates of all other groups generally reduced these parameters compared to control plants (P < 0.05). To our knowledge, this is the first study reporting AGs of Rhizoctonia isolates causing root and stem rot on kale plants in Turkey and in the world More less