Injured dose of Chlorsulturon on rice

This paper studied the paddy injured doseadding Chlorsulfuron to soil by simulated field application.The results showed that the rice was injured if the dose ofChlorsulfuron adding to paddy soil was more than 0.375 g(AI)/hm²,This mneans that residue concentration ofChlorsulfuron in plough soil was 0.17 μg/kg, It could be reck-oned that if the double recommendatory dose of Chlorsulfuron(30g /hm²)was used and the halflife of it in wheat soil wasmore than 32.1 days, the rice would be injured.