Glyphosate phytotoxicity occurs in paddy fields, and immediate remedial measures must be taken. Generally, the rescue effect is better after being damaged by pesticides in the peak tiller stage and the early stage of young panicle differentiation. In the booting stage, especially in the late stage of booting, the remedy effect is not good.
Remedy:
① Rinse with muddy water. Because glyphosate is passivated immediately after contact with soil, it will lose its activity quickly. The rice field water can be stirred into mud, and the rice plants can be rinsed with mud water to reduce phytotoxicity;
② Wash the seedlings with water. For rice fields with low terrain, after misuse of glyphosate, flood water can be poured over the top of the rice plant immediately, and repeated irrigation and drainage several times. It is better to use muddy water to irrigate.
③ Spray gibberellin to promote the growth and development of young ears. 1 g/mu of gibberellin powder can be used, first add a small amount of alcohol to dissolve, and then add 50-60 kg of water to spray. When spraying gibberellin, 100-120 g/mu of potassium dihydrogen phosphate or 1 stick (5 mL) of Foliar can be added to the liquid, and 5-7.5 kg/mu of urea is topdressed in the field after 7 days to promote Post-disaster transformation of rice to avoid impacts.
The effect of remediation is closely related to the growth period of rice. The effect of early growth period and timely remediation is good, and vice versa. Generally, the remediation effect is better when the rice is in the peak tillering stage and the early stage of young ear differentiation, and the remediation effect is not good.
