Circle the statement that best describes your soil conservation practices. I prevent soil erosion by using conservation tillage. I reduce soil erosion by using contour planting, and, if applicable, I use grassed waterways, field borders, grassed buffers and other soil conserving practices. I reduce soil erosion by using contour planting only. The greatest amount of phosphorus pollution is delivered by overland flow of water that carries sediment.
Most phosphorus is attached to soil particles.
Therefore, agricultural practices that maintain adequate but not high levels of soil phosphorus and reduce soil erosion will reduce pollution from phosphorus. In addition, since animal waste is high in phosphorus, it is important to follow animal waste disposal rules, regulations, and guidelines. Circle the statement that best describes your phosphorus soil test. Nitrogen Most nonpoint source nitrogen that enters surface waters moves into streams through groundwater. Surface runoff commonly contains low concentrations of nitrogen compared to groundwater flows from fertilized fields.