Effects of several pesticides on the field control of rice false smut
In order to screen for suitable pesticides for the prevention and control of rice false smut,18.7%propiconazole,43%tebuconazole,23%ether bacteria fluconazole,and 24%thiamethoxam were selected.Six pesticide treatments and one blank control were set up to compare the field control effects of each treatment on rice false smut.The experimental results showed that,the application of 24%thiamethoxam at the late tillering stage,and the application of 18.7%propiconazole(treatment 2)at 7-10 days before the breakthrough and during the heading stage had better control effects,with the highest yield of 200.6 kg in the plot.The best control effect was achieved by applying 24%thiamethoxam at the end of tillering,and applying 18.7%propiconazole and 43%tebuconazole(treatment 3)at 7-10 days before and during the heading stage.The yield of the plot was relatively high,at 189.4 kg.Overall,it was recommended to use 300 mL/hm2 of 24%thiamethoxam during the late tillering stage of rice,and apply 750 mL/hm2 of 18.7%propiconazole once every 7-10 days before the breakthrough and during the full heading period.This can effectively prevent and control the occurrence of rice false smut,and has a certain positive effect on rice safety production.
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