Problems to be noted when applying fungicides together with fertilizers

Issues to be noted when applying fungicides together with fertilizers. Reasonable mixing of fungicides and fertilizers can achieve the purpose of saving labor and time and having multiple effects with one application. When applied together, it is necessary to avoid mixing acidic and alkaline chemicals and fertilizers. Conduct a small-scale trial first, then expand the application area, and do not use during the sensitive period of the crops. When using fungicides and fertilizers together, foliar fertilizers should be prepared immediately and used promptly; they should not be left for a long time.

The use of fungicides and fertilizers together should be cautious, as it is important to check whether there might be a chemical reaction after their mixture that could reduce the efficacy or render the fungicide ineffective, or cause any adverse effects. For instance, alternariol methyl ether zinc (a fungicide) and potassium dihydrogen phosphate (a fertilizer) should not be mixed. Fungicides should not be combined with microbial fertilizers, and most fungicides or pesticides should not be mixed with the aqueous solution of wood ash. For fertilizers that are either acidic or alkaline, a small-scale test should be conducted first to determine if there are any adverse reactions before proceeding with large-scale application.

When diluting, follow the procedure of first preparing the mother solution and then conducting a second dilution, and mix thoroughly. During the dilution process, add half of the water to the container first, then add the foliar fertilizer, followed by the fungicide, then the wettable powder fungicide, then the suspension agent, then the water solution, and finally the emulsifiable concentrate. For each addition, mix thoroughly before adding the next one. After dilution, add another substance and mix again.