Effects of Salicylic Acid, Harpin and Phosphorus acid in Control of Late Blight (Phytophthora infestans Mont. De Barry) Disease and Some Physiological Parameters of Tomato
Articles > Article · 2003
Authors: Necip TOSUN, Lale AKTAŞ, Nefise Ülkü KARABAY YAVAŞOĞLU, Hüseyin Türküsay
The Journal of Turkish Phytopathological Society, Other Refereed National Journals, National, TR DİZİN (ULAKBİM), 2003, vol 32, pp 165-174
Summary
<p>Plant disease resistance elicitffs, salicyclic acid and Harping. alone and in combination with systemic fungicide phosphorus acid (Agrifos 400) were applied to tomato plants, which were inoculated with Phytophthora infestans after heaunents. The average disease reduction was about 47Vo aftq freaunent with SA and 55Vo with Harpinga. One of the newest promising fungicide Agrifos 400 connolled the late blight efficienfly with 887o compare to unfreated ones. The combinations of SA and HarpinEa with fungicide were found much more effective than that of single freatments. While SA induced the accumulation of pathogenesis related proteins (PR Foteins), chitinase, p-1,3-glucanase and peroxidase, Harping" was failed to provide significant increase in chitinase activity. SA and HarpinB. treaunents also exerted pleionopic effects on tomato growth and development and photosynthetic pigment contents. Surprisingly, fungicide application induced the disease resistance components like the elicitors used in our experiment. The results confirmed that Agrifos 400 is not only effective fungicide against late blight but also a plant activator. <br></p>