Massah, J.; Noorolahi, S.; Torki, Z.
("Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Iași, 2010-09-21)
When woody plants are
subjected to a sudden large drop in
temperature, injury or even death of plants
can occur. An electrical heater unit designed
for cold protection tree in winter. It made up
from three layers. ...