Mahmoud Hasan(1)*, Ramez Mohammad(2), and Tarek Hasan(3)
- Department of Plant Protection, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
- Tartous Center, General Commission for Scientific Agricultural Research (GCSAR), Syria,
- Department of Nutritive Science, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(*Corresponding author. Mahmoud Hasan, Email: dr.tarekhasan1980@gmail.com)
Abstract
The study explained the positive result of the treatment tobacco plant burley variety by Bion® to induce systemic acquired resistance SAR against the black shank disease which caused by fungus Phytophthora parasitica var nicotianae by two method s irrigation and spray. The best results was by treatment 0.5 m .mol concentration with irrigation method so it decreased the infection percentage of black shank disease to 26.7% and severity to 15% . Treatment by two methods showed positive results on some physical and chemical properties of dry leaves of tobacco plant burley variety, and the yield (dry and wet weight). It showed The best methods the irrigation treatment by 0.5 m.mol concentration, the apparent density of dry leaves to 40.55% increased to 45.97g/ cm2 comparing by healthy control 24.87g/cm2 , and nicotine percentage 1% comparing by healthy control 1.1%, also the chloride percentage was 0.94% comparing by healthy control 0.89%, which it a positive character, and the protein percentage increased to 16.12% comparing with healthy control 14.85% , and caused increase in the percentage of Non Protein Nitrogen (NPN) reached to 1.49% and 0.84% to healthy control. For yield the treatment by Bion® with irrigation method and 0.5 m. mol concentration increased the average of wet weight of plant to 529.13 g comparing with healthy control 357.31 g , and increased the average of dry weight of plant to 53.8g comparing with 35.87g to healthy control
Kay words: Apparent density, Nicotine, Chloride, Dry weight, Bion®, Phytophthora parasitica var nicotianae, Tobacco Plant Burley Variety
Full paper in Arabic: pdf