Blue/RED RATIO Trial
For this episode I set up a grow tent with two programmable LED fixtures provided by California LightWorks. Each fixture was programmed to deliver the same light intensity but their blue to red ratios were different. The image below shows spectrometer readings taken at crop height directly below the two LED fixtures.
The red heavy lighting recipe on the left encouraged plants to grow large leaves. The red leaf lettuce plants grew huge!
The blue heavy lighting recipe on the right encouraged plants to grow dark red compact leaves.