In modern agriculture, use of herbicide is unavoidable because of agriculture labour scarcity. Weed management is one of the important field operation in the crop production to get higher or optimum productivity. To have effective weed control during the critical period of crop production can be achieved by using herbicidal weed management.  To use optimum and to know the accumulation of herbicide molecule in the soil it is imperative to know the movement of herbicide molecule in the soil. If we know the spreading nature of the herbicides, we can identify some new method of herbicide delivery to the cropped field. Hence, if any body know the protocol to identify the movement/spreading of herbicide molecule in the soil please share with me.