Protection system configured to be installed on espaliers of plant crops arranged in rows, said espaliers comprising head posts and intermediate poles supporting a series of wires to form a support structure for said crops, said protection comprising two protection nets (2) adapted to be arranged one on each side of the row to be protected and a movement device (1) which can be firmly fixed to an intermediate pole of the espalier and comprising arms (10) pivoted to said movement device (1), said arms (10) being configured to be moved between a first operating position for protection and leaf containment of said crops, and a second opening position wherein said arms (10) are arranged raised with respect to said crops , said protection system further comprising two collection systems (5) each applicable to a terminal portion (20) of the network (2) and configured to be applicable to the end pole of the row and to allow easy collection of the corresponding network (2) at the end pole of the row during the operation of the protection system, said arms (10) being pivoted to a connection block (11) which in turn can be securely fixed to an intermediate pole of the espalier, said connection block (11) comprising in turn a pair of fixing brackets (110) interposed by a joint element (111) capable of engaging at each of its ends a fork (112) where a corresponding end of the arms (10) is pivoted by means of a corresponding slot (101) by means of a corresponding pin (102) characterized in that each fixing bracket (110) has a "C" shaped end portion (1110) with an external profile, the latter due to the effect of the mutual cooperation of the pin (102) inserted in the slot (101) and of a spring (13) connected to said pin (102) and to the corresponding arm (10), is configured to constrain the arms (10) in the desired operating configuration.
