Describe a rock wool slab system for vegetable produce ...

[future617RT]

Describe a rock wool slab system for vegetable produce production.
 
  What will be an ideal response?

Question 2

When is the lighting system generally turned on during the night for establishing short night conditions and why?
 
  What will be an ideal response?

[bdobbins]

Answer to Question 1

Place rock wool slabs in lines on a level surface. Customarily double
lines of slabs are used. Install a nutrient solution delivery system on top of the
slabs which releases solution at the base of the plants. Apply solution several times
per day allowing it to percolate down through the slab and out the lower sides. The
solution may be allowed to go to waste or may be recirculated.

Answer to Question 2

During the middle of the night because fewer hours of light are required.

[future617RT]

YES! Correct, THANKS for helping me on my review

[Dominic]

Thanks for the timely response, appreciate it