1. Do not mix pesticides with different acids or bases.
Most pesticides are acidic. When they come into contact with strong alkaline pesticides such as lime sulfur or Bordeaux mixture, they will decompose and become ineffective, losing all their efficacy.
2. Do not mix copper-based pesticides haphazardly.
Copper-based pesticides such as copper hydroxide and copper sulfate are prone to precipitation, inactivation, and phytotoxicity when mixed with mancozeb, carbendazim, or thiophanate-methyl.
3.The more pesticides mixed, the more likely the effect will be reduced.
Improper mixing of protectants, therapeutics, herbicides, and insecticides can easily cause interference and antagonism.
4.If layering, clumping, heating, or precipitation occurs, it indicates that the pesticide has reacted and become ineffective; do not spray it under any circumstances.
Remember this principle:
Prepare and use immediately; dilute twice; use as little as possible; use the same acid or base. Proper preparation yields twice the results with half the effort; improper preparation negates the drug's effectiveness, wasting your time.
