Originally posted by Grassmechanic
Plants and lakes cannot tell the difference between different sources of nutrients. Nitrogen is nitrogen, phosphorus is phosphorus and potash is potash, not matter what the source. That being said, I offer both to those that think they are doing the environment a favor.
Plants cannot tell the difference. The SOIL sure as hell can. One destroys it's microbial life and structure. One feeds and sustains said life.
Feed the soil, not the plant.