Fig. 5From: Effects of fertilization on radial growth of Pinus pinea explored hourly using dendrometersTime series of circadian cycles by season and treatment (Fertilization, upper line; control, bottom line). The stem cycle is divided into three phases: contraction (solid black), expansion (grey), and diameter increment (red). One month of winter (August), spring (November), summer (February) and autumn (May) was studiedBack to article page