Ben Bishop wrote: Are there instances where something like calcium, potassium, magnesium, etc, the macrominerals, aren't present in the parent rock material and clay/silt/sand? Could there adequate amounts of micronutrients locked up in the rock but not present in soil that only microbes could get at?
Ben Bishop wrote:Hello!
I've heard some interesting research recently from a friend who works with Elaine Ingham. The theory is basically this: Nearly all of the minerals needed for proper plant growth with the exception of nitrogen and carbon can be found in an inorganic form in most soil types. To access these minerals, plants secrete specific types of root sugars at specific times to attract specific microbes that "mine" for whatever mineral that plant needs at that particular moment. In other words, by ensuring adequate compost and compost tea applications and fostering high microbial life, you will mitigate the need to supplement any type of mineral into the soil. What do you all think of this? I'm having trouble confirming the idea that magnesium, calcium, phosphorus, potassium, etc would be A.) present in a good balance in all soil types and B.) be abundant enough to support heavy-feeding plants. However, this theory makes sense to me and I want to believe it!
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