t15-1 soil science & management, 4e chapter 15 organic amendments

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T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

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Page 1: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-1 Soil Science & Management, 4E

Chapter 15

Organic Amendments

Page 2: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-2 Soil Science & Management, 4E

Objectives

• Explain the benefits of organic amendments

• Describe how to use animal manure• Describe how to use biosolids• Explain large-scale composting• List environmental side effects of fertilizers

and amendments

Page 3: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-3 Soil Science & Management, 4E

Terms to Know

• Best Management Practices• Biosolids• Eutrophication• Hypoxia• Mesophilic• Organic amendment• Sewage sludge• Thermophilic

Page 4: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-4 Soil Science & Management, 4E

Animal Manure

Figure 15-1

• Benefits of manure

Page 5: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-5 Soil Science & Management, 4E

Animal Manure

• Problems of manure

• Content of manure

Figure 15-2

Page 6: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-6 Soil Science & Management, 4E

Animal Manure

• Nutrient losses from manure

Figure 15-3

Page 7: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-7 Soil Science & Management, 4E

Animal Manure

• Handling manure

Figure 15-4

Page 8: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-8 Soil Science & Management, 4E

Animal Manure

• Handling manure

• Best Management Practices

Figure 15-7

Page 9: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-9 Soil Science & Management, 4E

Biosolids

• Biosolids problems– Pollutants– Human pathogens– Human vectors– Other problems

• Application guidelines

• Criticism of biosolids

Page 10: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-10 Soil Science & Management, 4E

Compost

Figure 15-12

Page 11: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-11 Soil Science & Management, 4E

• Animal and human health• Eutrophication and hypoxia• Energy costs• Human changes in global nitrogen

cycles• Best Management Practices

Fertilizer and the Environment

Page 12: T15-1 Soil Science & Management, 4E Chapter 15 Organic Amendments

T15-12 Soil Science & Management, 4E

Summary

• Manure, biosolids, and compost double benefit– Contain nutrients– Provide organic matter

• Biosolids: recycled “human manure”• Composting reduces C:N ratio• Improper use can harm environment