| Studies was conducted to determine the effects of fungicide usage on rice blast disease, caused by Pyricularia grisea (Cooke) Sacc. [= Magnaporthe grisea (Hebert) Barr] on rice cultivar KDML105 in Mae Hong Son Province. The four fungicides usage were isoprothiolane (Fuji one) tricyclazol (Beam 75%wp) Azoxystrobin + Difenoconazole (Ortiva 32 SC and Carbendazim (Cardazin-F). The results showed the four fungicides were use in rice KDML105 to be more effective in suppressing blast and protecting yield, compared to control (non-treat). The fungicides that Azoxystrobin + Difenoconazole was moderately resistant to leaf and neck blast, with the lowest percentage unfilled grains per panicle and have highest yield (669 kg/rai) with compare to the other. |
