Molinate solution is primarily used as a selective herbicide in agriculture, specifically for controlling grassy weeds in rice fields. It is applied to the soil or water in rice paddies, where it inhibits the growth of unwanted grasses by disrupting their germination and early development. This helps to ensure that rice crops can grow without competition for nutrients, water, and sunlight. Molinate is particularly effective in pre-emergent and early post-emergent stages of weed growth. Its application is timed carefully to maximize effectiveness while minimizing any potential impact on the rice plants. Proper handling and adherence to safety guidelines are essential to protect both the environment and human health during its use.