Methods of using humic liquid:

1. Soil application:
   Humic liquid can be mixed with irrigation water and evenly distributed around plant roots, ensuring effective absorption and enhancing soil quality.
2. Foliar spray:
   It can also be applied as a spray on plant leaves, allowing for rapid absorption through the foliage.

Methods of using liquid copper in agriculture:

1. Foliar spray:
   Liquid copper is sprayed onto plant leaves, allowing direct absorption through the foliage. This method is effective for quickly addressing deficiencies.
2. Soil application:
   Liquid copper can be added to irrigation water to deliver it to the roots, helping plants absorb it efficiently.

Proper use of liquid copper improves plant health, increases crop productivity, and enhances plant resistance to fungal and bacterial diseases.