How to carry out integrated control of cowpea rust and powdery mildew in greenhouses?
At the early stage of the disease, spray 70% thiophanate-methyl wettable powder at 500 times dilution, or 40% copper oxychloride wettable powder at 600 times dilution, 50% sulfur suspension concentrate at 300 times dilution, or Fenbiqing at 150 times dilution. Spray 2 to 3 times consecutively, at 5 to 7 day intervals.
At the early stage of the disease, spray 70% thiophanate-methyl wettable powder at 500 times dilution, or 40% copper oxychloride wettable powder at 600 times dilution, 50% sulfur suspension concentrate at 300 times dilution, or Fenbiqing at 150 times dilution. Spray 2 to 3 times consecutively, at 5 to 7 day intervals.