Selection of suitable mechanical method/herbicide is a great problem in the intercropping system than in the case of the component crop grown alone. The mechanical method/herbicide selected for weed control should be effective to suppress the weed growth of both the crops without having any deleterious effect on the component crops. In sugarcane + potato and potato + maize intercropping systems, metribuzin @ 0.7 and 0.5 kg/ha, respectively as pre-emergence to potato provide weed free environment throughout the entire span of both the crops.