Mineralization

Image from Something to Grow On,
Cornell University

Immobilization

Image from Something to Grow On,
Cornell University

Volatilization

Image from Something to Grow On,
Cornell University

Nitrification

Image from Something to Grow On,
Cornell University

Leaching

Image from Something to Grow On,
Cornell University

Denitrification

Image from Something to Grow On,
Cornell University

Plant Nutrition

• What Is an Essential Element?
• Environmental Factors Affecting Growth-Plant Nutrition
• Crop Nutrient Use Calculator
• Cornell-University-Something To Grow On
• KidsWorld-Plant Nutrition
• Plant Nutrition and Soils
• On-Line Biology Book-Plant Hormones, Nutrition, and Transport
• Plant Nutrition Facts
• USDA ARS Soil Plant Nutrient Research
• Essential Elements for Plant Growth
• What Is Plant Nutrition?

  Nitrogen

• Nitrogen-The Essential Element
• Nitrogen Use Efficiency-Oklahoma
• Colorado State University-Nitrates in Drinking Water
• The Nitrogen Cycle
• The Nitrogen Cycle
• Nitrogen Cycle
• The Nitrogen Cycle: Animation
• Wikipedia: Nitrogen Cycle
• Selecting Forms of Nitrogen Fertilizer
• The Gulf of Mexico Dead Zone
• Dead Zone May Boost Shark Attacks
• Wikipedia: Dead Zone (ecology), (TV show)

Soil Fertility and Fertilizers

• Back to Basics Soil Fertility
• Texas A&M University-Nutrition and Fertilizers
• International Fertilizer Industry Association
• Fertilizer Suggestions for Soybeans, Fertilizer Suggestions for Corn
• Using Starter Fertilizers for Corn, Grain Sorghum, and Soybean
• Soil pH: What It Means
• Soil Fertility Guide
• International Plant Nutrition Institute
• European Fertilizer Manufacturers Association
• Animal Manure as a Plant Nutrient Resource
• Tri-State fertilizer Recommendations for Corn, Soybean, Wheat, and Alfalfa
• Efficient Fertilizer Use Manual
• EPA-Nutrient Management
• Wikipedia: Fertilizer

  Nutrient Deficiencies

• Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
• Plant Stress-Mineral Deficiency and Toxicity
• Plant Nutrient Deficiency Decision Key
• Guide to Symptoms of Plant Nutrient Deficiencies
• Recognizing Plant Nutrient Deficiencies
• SDSU-Nutrient Deficiency Symptoms: Corn, Soybean, Wheat