Inoculated and un-inoculated seeds were sown in clay pots (25 cm high, 22 cm internal diameter) containing 3 kg unsterilized soils with control (without tebuconazole) and three treatments with 100 [recommended field rate (1ท)], 200 [two times the recommended field rate (2ท)] and 300 lg kg_1 soil [three times the recommended field rate (3ท)] of tebuconazole.