**Click on the tiles below to download PowerPoint File** Section A - Fertility Concepts Section B - Soil Chemical Properties Section C - Soil Organic Matter Section D - Soil Acidity Section E - Soil Salinity Sodicity Alkalinity Section F - Irrigation and Water Quality Section G - Roots Section H - Plant Nutrition Section I - Nitrogen Section J - Phosphorus Section K - Potassium Section L - Micronutrients Section M - Nutrient Availability Section N - Nutrient Sufficiency Evaluation Section O - Fertilizer Management Section P - Nutrient Management in Desert Section Q - Food Quality Section R - Organic Agriculture Section S - Integrated Nutrient Management Charles Sanchez csanchez@email.arizona.edu 520-374-6274