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Öğe Effects of Plant Activators on Physiological and Morphological Parameters of Processing Tomato(Int Soc Horticultural Science, 2009) Turkusay, H.; Tosun, N.; Yildiz, S.; Saygili, H.; Saygili, H; Sahin, F; Aysan, YIn this study, effects of plant activators in standard grower practices were evaluated for yield, and some quality properties of processing tomato as well as disease management. It was found significant differences on tomato plants among plant activator applications and untreated plot. The number of cluster, flower, fruit and ripe fruit were determined as main characters affecting directly on yield of tomato. The highest yield were obtained from the plots where Bion MX 44 WG, Messenger, and ISR-2000 + Crop-Set, respectively. More yield compare to control plot were harvested as 71% from Bion MX applied plot, as 64% from Messenger applied plot, and 59% from ISR-2000 + Crop-Set applied plot. In terms of tomato paste, better yield and quality also were obtained from activator appled plots compare to control one. Early maturity was observed from Messenger applied plants. In results, Bion MX was found to have the highest positive effects on quality such as brix and fruit size, however, it could be of limited use because of residue problem of 40% metalaxyl. Moreover, ISR-2000 + Crop-Set combination also had high values in both brix and tomato paste yield. Less diseases were observed from the activator treated plots compare to untreated one.Öğe Efficacies of plant activators in control of fire blight of pear in Turkey(Int Soc Horticultural Science, 2006) Gunen, Y.; Ozdemir, N.; Gunen, E.; Turkusay, H.; Tosun, N.; Saygili, H.; Bazzi, C; Mazzucchi, UThis study has been made at Ege University, Odemis Vocational Training School in 2002 and 2003 on 10-year-old pear trees of the fire blight-susceptible cultivar, Dr. Jules Guyot. Apogee (Prohexadione-calcium; 50 g/acre), Messenger (Harpin Ea protein; 16.5 g/acre), Cropset (a plant-booster element complex; 0.5 I/acre), or streptomycin sulfate (100 ppm; 25 g/acre) were applied to trees in five replicates to determine the efficacy of the antibiotic or systemic acquired resistance compounds for control of fire blight of shoots. Five replicate trees were left as untreated controls. The activators were applied in April when shoots were 10 to 15 cm in length. After treatment, shoots were inoculated with a suspension of Erwinia amylovora containing 10(8) CFU/ml. Two months later, the % of the shoot length blighted (SLB%) was determined by using the formula (a/b) X 100 (a = the length of fire blight lesion and b = total shoot length). In 2002 the SLB% was as follows: streptomycin sulfate = 17.53%, prohexadione-calcium 29.37%, Harpin = 35.04%, plant booster element complex = 60.31%, and control 65.23%. In 2003 the results of the trial were: streptomycin sulfate = 15.80%, prohexadione-calcium = 32.43%, Harpin = 33.39%, plantbooster element complex = 58.52%, and control = 66.97%.Öğe Efficacy of Solarization Combined with Metam Sodium and Hydrogen Peroxide in Control of Fusarium oxysporum f. sp radicis-lycopersici and Clavibacter michiganensis subsp michiganensis in Tomato Greenhouse(Int Soc Horticultural Science, 2011) Yuce, E. K.; Yigit, S.; Tosun, N.; Crescenzi, AFusarium oxysporum f. sp. radicis-lycopersici (Forl) and Clavibacter michiganensis subsp. michiganensis (Cmm) can cause serious economic losses as soilborne pathogens of tomato. There is no practical and effective way to control both pathogens in greenhouse. In this study, effects of solarization alone and combined with metam sodium and hydrogen peroxide+benzoic acid, individually against Forl and Cmm were evaluated in greenhouse conditions in July and August, 2009 in Ortaca, Turkey. Both pathogens were artificially incorporated into soil of each plot before solarization. Metam sodium was applied once with solarization while hydrogen peroxide+benzoic acid was practiced twice via drip irrigation system with two different doses during a three-week solarization period. In the result of the study, solarization alone did not suppress both pathogens. Moreover, metam sodium with 1250 L/ha dose and hydrogen peroxide+benzoic acid with total of 200 L/ha dose were found ineffective to control them, as well. On the other hand, hydrogen peroxide+benzoic acid with total of 300 L/ha dose had the highest efficacy for both Forl and Cmm along with solarization. In conclusion, hydrogen peroxide+benzoic acid as an environmentally friendly chemical could be a new approach to combat the soilborne diseases in solarization since metam sodium is planned to be banned in agriculture in the near future.Öğe First Report of QoI Resistance in Venturia inaequalis Causing Apple Scab in Apple Orchards in Turkey.(Amer Phytopathological Soc, 2016) Turan, C.; Nanni, I. M.; Tosun, N.; Collina, M.
