I need some help from some of the earth science/soil science teachers out
there, and maybe some of the gardeners.

* I'm trying to like to develop a lesson where students mix various amounts
of sand, silt, and clay. I can purchase sand and clay easily, but I can't
find silt. Any ideas? (I need mineral particles between 0.002 and 0.05 mm in

* Does anyone know the general texture (by % of sand, silt and clay) of
off-the-shelf soil? How much does this vary from product-to-product?

* Peat moss--like I can purchase at Home Depot--is almost pure organic
material, right?

* Does anyone know where to get sieves with a 2 mm grate?



This is the ISTA-talk mailing list.

To unsubscribe:

For more information:

To search the archives:

Reply via email to