Supplemental Lighting Effects on Newly Planted and Cut-back Greenhouse Roses1

Open Access
Publisher Website
Google Scholar
Abstract
Supplemental lighting nightly during late spring and early summer with Wide Spectrum Gro-Lux fluorescent lamps at 29 lamp watts/ft2 has been found to improve the development of newly planted dormant and cut-back rose plants. Lighted plants of cvs Electra, Red American Beauty and Forever Yours produced a higher percentage of flowering stems than unlighted plants. Plants receiving supplemental lighting had significant increases in the no. of flowering stems developing after a hard pinch, and generally significant increases in bottom breaks. Cut flower production was increased 18-41% after plant development had been completed, but for ‘Electra’ this increase was in flower stem lengths less than 15 inches.

This publication has 0 references indexed in Scilit: