ROOT ZONE HEATING OF GERBERA IN ROCKWOOL
Root zone warming effects on gerbera are studied at 19°, 15°, and unheated control in rockwool culture in a cold greenhouse for winter production. Results show important effects of substrate heating on yield and quality, length of flower stalk, and earliness. Cultivars response to treatments is quite different.
The possibility of winter production is shown, but further work is needed to determine the economical interest of rockwool culture versus natural soil growing.
Martínez-García, P.F., Catalá-Forner, M.M., Romero-Aranda, R., Solves-Ferrer, M.J. and Díaz-Mínguez, R. (1989). ROOT ZONE HEATING OF GERBERA IN ROCKWOOL. Acta Hortic. 246, 45-52