Frank Mayhar wrote: >Steve Brust wrote: > > >>Actually, it isn't all that complicated. _Principles of Field Crop >>Production_ by Martin, Leonard, and Stamp, third edition, page 76 has a >>very convenient chart showing how plants are effected by various light >>spectra. Turns out "orange-red" is right up there; you don't lose very >>much. >> >> > >Part of the reason that chlorophyll is green. It absorbs mostly orangish >light, reflecting the rest. > Interesting. I was fixed on the caloric content of the plants. Perhaps I can ask someone around here, as well. I remember, dimly, reports in Science news about colored mulches for tomatoes, now that I think on it. . . . Snarkhunter