Test of Control Efficacy of Five Medicaments on Controlling Rice Sheath Blight

Rice sheath blight at Xudun Town, Jian'ou City was increasingly serious in recent years. In order to improve control efficacy of rice sheath blight, efficacy test of 30% Armure EC, 24% Pulsor SC 43% Ricket SC, 25% Propiconazole EC and 20% validamycin was carried out. The results showed that the control efficacy of 15 mL 30% Armure EC and 20 mL 24% Pulsor SC per 667 m² reached highest level. Moreover, 30% Armure EC and 24% Pulsor SC had safe effects and long persistence period on rice growth. If sprayed one time, it was suggested to spray 15 mL 30% Armure EC or 20 mL 24% Pulsor SC per 667 m².