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Green copper emulsion is highly effective against rice bacterial leaf streak
In an average epidemic year, the control efficacy reaches 85-91%, which is 10-15 percentage points higher than that of Japanese-made chlorothalonil. Method of use: in an average epidemic year, spraying twice is sufficient. The first spray is applied at stages 2-4 of young panicle differentiation in rice; 7 days after treatment the disease tends to stabilize, new acute lesions decrease significantly, and the original lesions stop developing after turning yellow. The second spray is applied 10 days later, using 100 mL of 12% green copper emulsion per mu each time, diluted 500-600 times for spraying. After 20 days, the rice leaf color turns noticeably greener, and the newly emerged flag leaf and the second leaf from the top have no
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Is copper hydroxide effective for treating rice bacterial leaf streak?
How effective is copper hydroxide for treating rice bacterial leaf streak? How many applications are needed? Please answer objectively. Thank you for your question. The answer is as follows: Copper hydroxide can control rice bacterial leaf streak, bacterial leaf blight, rice blast, sheath blight and rice false smut, etc. Before or at the early stage of disease onset, spray with a 53.8% dry suspension concentrate at 900-1100 times dilution, with 2 consecutive applications.
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