Chapter 14 Fertilizers T 14 Soil Science Management

Chapter 14 Fertilizers T 14 - Soil Science & Management, 4 E

Objectives • • • T 14 - Distinguish forms of fertilizers Describe fertilizer sources for each nutrient Perform important fertilizer calculations Describe how to use fertilizers List two effects fertilizers have on the soil Science & Management, 4 E

Terms to Know • Banding • Broadcasting • Calcium carbonate equivalent • Chelates • Complete fertilizers • Fertigating • Fertilizer analysis T 14 - • • Fertilizer burn Fertilizer filler Fertilizer grade Fertilizer ratio Fluid fertilizers Foliar feeding Fritted trace elements Granules (continued) Soil Science & Management, 4 E

Terms to Know • • • T 14 - Mixed fertilizers Nutrient carriers Pop-up fertilizers Pressurized liquid Prills Pulverized fertilizers Sidedressing Split application Starter fertilizer Topdressing Soil Science & Management, 4 E

Fertilizers Figure 14 -1 T 14 - Soil Science & Management, 4 E

Fertilizers • Pressurized liquids Figure 14 -2 T 14 - Soil Science & Management, 4 E

Fertilizers • Fluid fertilizers • Dry fertilizers • Slow-release fertilizers T 14 - Soil Science & Management, 4 E

Fertilizer Materials • • • T 14 - Nitrogen carriers (See Figures 14 -4, 14 -5, 14 -6) Phosphorus carriers (See Figures 14 -8, 14 -9) Potassium carriers (See Figure 14 -11) Secondary elements (See Figure 14 -12) Trace elements (See Figure 14 -13) Soil Science & Management, 4 E

Fertilizer Materials Figure 14 -4 T 14 - Soil Science & Management, 4 E

Fertilizer Materials Figure 14 -5 T 14 - Soil Science & Management, 4 E

Fertilizer Materials Figure 14 -6 T 14 - Soil Science & Management, 4 E

Fertilizer Materials Figure 14 -8 T 14 - Soil Science & Management, 4 E

Fertilizer Materials Figure 14 -9 Figure 14 -11 T 14 - Soil Science & Management, 4 E

Fertilizer Materials Figure 14 -12 T 14 - Soil Science & Management, 4 E

Fertilizer Materials Figure 14 -13 T 14 - Soil Science & Management, 4 E

Mixed Fertilizers • Fertilizer analysis and grade Figure 14 -14 T 14 - Soil Science & Management, 4 E

Mixed Fertilizers • • T 14 - Contents of fertilizers Fertilizer ratio Elements and oxides Calculations for blending Soil Science & Management, 4 E

Selecting Fertilizer • Factors that influence fertilizer selection: – Crop – Time of year – Application method – Cost T 14 - Soil Science & Management, 4 E

Applying Fertilizer Figure 14 -15 T 14 - Soil Science & Management, 4 E

Applying Fertilizer • Fertilizing before planting – Broadcasting – Soil injection • Fertilizing at planting – Banding Figure 14 -17 T 14 - Soil Science & Management, 4 E

Applying Fertilizer • Pop-up fertilizers – Transplant solutions • Fertilizing after planting – Topdressing – Sidedressing – Fertigation – Foliar feeding T 14 - Soil Science & Management, 4 E

Applying Fertilizer • Horticultural fertilization T 14 - Soil Science & Management, 4 E

Fertilizer Effects on Soils • Effects of fertilizer on soil p. H • Effects of fertilizer on soluble salts T 14 - Soil Science & Management, 4 E

Summary • Fertilizer is substance used to supply essential elements – Finely ground minerals, natural or synthetic organic materials, and inorganic chemicals – Fertilizers come in different forms: • Dry • Fluid • Slow-release • Mixed – Nitrogen, phosphate, and potash T 14 - Soil Science & Management, 4 E