| Trichoderma harzianum 01-52 prepared as powder formulation was evaluated for the efficacy to reduce dirty panicle and to increase yield of rice. This investigation was the cooperative research between Plant Pathologists from Kasetsart University and Rice Department. Rice seeds (Suphan Buri 3) were soaked in spore suspension of T. harzianum 01-52 (100 g/100 l) for 15 hrs and were further incubated for 24 hrs before sowing in plastic tray contained with burned rice hull. Eighteen-day-old rice seedlings were planted in rice field by transplanting machine. Rice plants were sprayed with T. harzianum 01-52 spore suspension (100 g/100 l/rai or 1,600 m2) for three times at 60, 70 and 80 days after sowing. In some treatments, two additional foliar sprays were... |
