Lettuce Growing in Rockwool Substrate (IMAGE)
Caption
GROWTH — A rockwool substrate sheet with 14-day old lettuce seedlings is ready to be placed in the hydroponic deep water culture system. (U of A System Division of Agriculture photo)
Credit
U of A System Division of Agriculture photo
Usage Restrictions
Credit must be given to the creator. Adaptations must be shared under the same terms.
License
CC BY-SA