T14-1 Soil Science & Management, 4E Chapter 14 Fertilizers.
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Transcript of T14-1 Soil Science & Management, 4E Chapter 14 Fertilizers.
T14-1 Soil Science & Management, 4E
Chapter 14
Fertilizers
T14-2 Soil Science & Management, 4E
Objectives
• 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
T14-3 Soil Science & Management, 4E
Terms to Know• Banding• Broadcasting• Calcium carbonate
equivalent• Chelates• Complete fertilizers• Fertigating• Fertilizer• Fertilizer analysis
• Fertilizer burn• Fertilizer filler• Fertilizer grade• Fertilizer ratio• Fluid fertilizers• Foliar feeding• Fritted trace elements• Granules
(continued)
T14-4 Soil Science & Management, 4E
Terms to Know
• Mixed fertilizers• Nutrient carriers• Pop-up fertilizers• Pressurized liquid• Prills• Pulverized fertilizers• Sidedressing• Split application• Starter fertilizer• Topdressing
T14-5 Soil Science & Management, 4E
Fertilizers
Figure 14-1
T14-6 Soil Science & Management, 4E
Fertilizers
• Pressurized liquids
Figure 14-2
T14-7 Soil Science & Management, 4E
Fertilizers
• Fluid fertilizers
• Dry fertilizers
• Slow-release fertilizers
T14-8 Soil Science & Management, 4E
Fertilizer Materials
• 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)
T14-9 Soil Science & Management, 4E
Figure 14-4
Fertilizer Materials
T14-10 Soil Science & Management, 4E
Figure 14-5
Fertilizer Materials
T14-11 Soil Science & Management, 4E
Figure 14-6
Fertilizer Materials
T14-12 Soil Science & Management, 4E
Figure 14-8
Fertilizer Materials
T14-13 Soil Science & Management, 4E
Figure 14-9
Figure 14-11
Fertilizer Materials
T14-14 Soil Science & Management, 4E
Figure 14-12
Fertilizer Materials
T14-15 Soil Science & Management, 4E
Figure 14-13
Fertilizer Materials
T14-16 Soil Science & Management, 4E
• Fertilizer analysis and grade
Figure 14-14
Mixed Fertilizers
T14-17 Soil Science & Management, 4E
Mixed Fertilizers• Contents of fertilizers• Fertilizer ratio • Elements and oxides • Calculations for blending
T14-18 Soil Science & Management, 4E
Selecting Fertilizer
• Factors that influence fertilizer selection:
– Crop
– Time of year
– Application method
– Cost
T14-19 Soil Science & Management, 4E
Applying Fertilizer
Figure 14-15
T14-20 Soil Science & Management, 4E
Applying Fertilizer
• Fertilizing before planting– Broadcasting– Soil injection
• Fertilizing at planting– Banding
Figure 14-17
T14-21 Soil Science & Management, 4E
Applying Fertilizer
• Pop-up fertilizers– Transplant solutions
• Fertilizing after planting– Topdressing– Sidedressing– Fertigation– Foliar feeding
T14-22 Soil Science & Management, 4E
Applying Fertilizer
• Horticultural fertilization
T14-23 Soil Science & Management, 4E
Fertilizer Effects on Soils
• Effects of fertilizer on soil pH
• Effects of fertilizer on soluble salts
T14-24 Soil Science & Management, 4E
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