I need a fungicides that works

[billaaa777]

I have a white fungus that is killing my plants. After trying 3 different fungicides that did not work, I came to the place where people know about this. In the picture below you can see all that white stuff that is killing my plants. Thanks for your help in advance.

[drtreelove]

Not a fungus infection.  It appears to be a mealy bug infestation (a very common sucking insect pest). 

 

If so, you can reduce the population numbers significantly by washing them off with a strong water spray. And/or wipe them off with a rag or cotton gloved hand. 

 

If not on food plants, you can use a systemic insecticide soil drench. The insecticide will be taken up through the roots and translocated throughout the foliage, so that the sucking insects ingest the chemistry and die. Insecticide contact sprays have limited effectiveness because mealy bugs have a waxy protective coating that prevents chemical contact.

 

The most effective systemic insecticide will be a neonicotinoid class of pesticide, like dinotefuran active ingredient (Starkle in Thailand) for extremely fast uptake and kill, but limited residual effectiveness. Or imidicloprid active ingredient for slow uptake but one year or more residual effectiveness. Consider using both. 

 

Improving soil fertiity and plant nutrition will help the plants build natural resistance to pests and disease. Use of high NPK, high salt index chemical fertilizers are a pest magnet. 

 

I hope that helps, Don