The systems used to protect crops from insects.

The most commonly used nets protect against Drosophila Suzuki and aphids; they are formed of very thick mesh and made from UV-stabilised polyethylene monofilament.

They come in various colours: black, grey and white.

The most commonly used mesh includes: 20/10, 16/10 and 8/10.

They are used in single-row insect-proof and in single-block systems, such as perimeter covers.