Assess students' ability to apply nutrient budgeting and design best-management practices (BMPs) to reduce agricultural nonpoint-source pollution in a temperate watershed; tasks include calculating field- and watershed-scale nutrient budgets from given inputs (fertilizer/manure rates, crop uptake, runoff and leaching coefficients), identifying critical source areas and transport pathways, selecting and sizing BMPs (buffer strips, cover crops, tile drain controls, wetlands, manure storage), estimating expected load reductions, discussing cost-effectiveness and maintenance trade-offs, and proposing monitoring and adaptive management measures. Data interpretation, basic calculations, and justified design choices are required.