Why is it important to follow the application instructions for organic soil amendments?

Why is it important to follow the application instructions for organic soil amendments?

Tracy DiSabato-Aust (Garden Designer and Author) gives expert video advice on: What are 'soil amendments'?; What is the difference between 'organic' and 'inorganic' soil amendments?; What is 'leaf humus'? and more...

Well, there is the possibility to use too much, and it's the law of diminishing returns. If we add too much organic matter content, we can actually decrease the drainage of the soil. We would end up with a very spongy, heavy soil. So it's important to understand, again, what kind of soil structure we're starting with, and how much we can add, so that we're not adding too much and we're really kind of defeating the whole purpose.