CONTROL OF RICE BLAST BY TRICYCLAZOLE

SAAD ABDULLAH and SUPAAD MOHD. AMIN

SUMMARY

The two fungicides, Hinosan and Fuji-1G, which are currently the standard chemicals recommended are still effective in controlling foliar blast and panicle blast respectively. However, a new chemical, Tricyclazole, when tested were found equally as good and if not better than the standard chemicals in controlling both the foliar and panicle blast. Two spray applications of Tricyclazole at 0.05% a.i., one on first appearance of the disease followed with another three days later could control the foliar blast in the rice nurseries. Another advantage is that this fungicide was also found effective when applied as a soil treatment in the nurseries. At a rate of 9 litres of 0.05% a.i. concentration per 20 litres of soil, it could remain effective as long as over 21 DAS. Panicle blast could also be effectively controlled by this fungicide. When applied at 0.05% a.i. at full booting stage, its effectiveness was similar as Fuji-1G applied at 1 kg a.i./ha. Both these fungicides gavea n increase in yield of about 30%

Full Text (357 KB)