VCS agronomy promoting the Ecorobotix spot sprayer at the British leafy salads weeding demo day.
Here we have the spot sprayer delivered by Ecorobotix.

We have a 3 bed 6 metres unit that has 156 nozzles across 3 beds, each spaced 4 cm apart. 26 cm above crop height will spray a 6 cm x 6 cm pattern of spray at whatever rate you decide to apply.