Thread: Clay Platelets
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Old 01-23-2013, 09:55 AM
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Quote:
Originally Posted by Kiril View Post
Have to disagree, that is unless you are just talking about growing some random grass and not a high quality stand of turf. Beyond that "growing grass" is not the same as managing a turf grass system. Soil structure, in the case of the latter, is immensely important.
Maybe we're not all talking about the same thing here. No one has mentioned what kind of soil structure they think is desirable, why it is desirable, in what situations different structure grades are beneficial, and how you influence soil structure in turf systems.

Remember, soil structure is the combination or arrangement of primary soil particles into secondary units or peds. If you've ever tried to dig some dirt out of the ground with a shovel and the dirt stuck together in clods, then you have soil structure! If you had no soil structure, then your dirt is either one large compacted mass (sodic soils often have this) or it doesn't stick together at all is is comprised of mostly one texture element (SSSA defines structureless soil as "No observable aggregation or no definite and orderly arrangement of natural lines of weakness. Massive, if coherent; single-grain, if noncoherent.")

If you have ever tilled soil for a new planting or if you've loosened the soil with a rake for seeding, then you've destroyed the soil structure in the disturbed area. But, I don't think any of us would think it bad practice to loosen the soil for new seed.

In golf courses and high-end athletic fields, sand-based rootzones are constructed which have no soil structure at all. If you like, you can mix up some of your favorite native soil, loosely place it in a pot, and grow a fantastic stand of turf in something with no soil structure.

I understand what structure is in soils and how it can be beneficial to turf systems, but none of those benefits have yet been discussed here. It seems that some folks desire "good soil structure" (whatever that is) as an end unto itself, without understanding what good it does for their turf system.
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