Wheatgrass questions?

Question

So i did a lab.

with

a wheatgrass that had full organic sand

and one that had 1/2 sand half soil. Why didn't the one with sand grow longer than the one with half of them?

Answer 1

Sand has no nutrients and the half soil mix had more. A plant will rapidly deplete it's reserves after sprouting when the first roots are suppose to take over from the seed reserves.

Answer 2

While sand has limited nutrients, it has even lower water holding capacity.  A soil that is half sand is usually in the loam texture class which has the maximum water holding capacity.  Wheatgrass has acceptable performance in a wide range of soils, and is fairly effective in extracting water from heavy soils.  However, you can't get blood from a turnip.  Translation: Wheatgrass can only access water if water is there.  In a pure sand there is precious little water retained at field capacity.

Answer 3

dude this lab was so annoying i hated it

good luck im getitng a bad grade

Answer 4

The plants with pure sand will be dependant on the nutrients that you supply them with, as the sand by itself will have little to no nutrients in it. By you calling it full organic sand, I am assuming that you supplied some organic nutrients to the sand. The half sand and half soil will have the nutrients you supplied plus the nutrients already in the soil. So you would expect the plants growing in the 1/2 soil might grow better than the ones in pure sand.