Advance Soil TechnologyLogo Design Contest

I like the first logo, but what is the artistic picture in the "O" represent.

The "O" represent soil ground , please let me know if you want to change something. thank you.

I understand the "O", but what is the symbol inside of the "O"? Is there anything else you can do with the symbol to highlight ground or soil?

#25 #26 #27 my new submission

Can you remove the plant from entry #26...i like the coloring scheme, but don't want customers thinking we're a landscaping company.

the plant has been removed on these entries #38 #39

For entry #38, can you put AST inside the "O" and keep the same coloring scheme. Can you also include the letters "AST" into entry #27 and #39.

As a reminder, please do the following:
For entry #38, can you put AST inside the "O" and keep the same coloring scheme. Can you also include the letters "AST" into entry #27 and #39.

New version with AST incorporated into logo, please take a look #59 #60 #61

I really like entry #38 and I'm in the process of picking a winner, is there anyway you can send me the same logo but with a single color, maybe a couple variations of green. I like the two-tone, but for certain marketing collateral, i can only go with one color and I like green, i just don't know which variation of green looks the best. Can you send the single color to skassai@gmail.com