Abstract
An experimental study on water jet cutting of plants was conducted to develop a new method of weeding without chemicals. Instead of weeds, rice seedlings were used in the experiments to enable constant experimental conditions to be created. The experimental parameters were pump pressure, distance to the object, nozzle diameter, angle between the water jet and the seedlings, and cutting speed. The best cutting result was obtained with a nozzle of 0.4mm diameter and the highest experimental pump pressure. It was found that the water jet had a high cutting capability at around the point where the beam began to diffuse. The appropriate angle between the water jet and the seedlings was about 45 degrees. Cutting speed had little effect on the results in the conditions of these experiments.
