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Fertilizer Classifications
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346.T1 odel Agricultural Core Curriculum: Supplement niversity of California, Davis Organic and Inorganic Fertilizers Fertilizer Classifications • Organics – Natural organics – Major animal materials – Synthetic organics – Processed organics • Inorganics – Super phosphate – Ammonium nitrate – Ammonium sulphate – Ammonium phosphate
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Organics Natural organics Major animal materials Synthetic organics Processed organics. Inorganics Super phosphate Ammonium nitrate Ammonium sulphate Ammonium phosphate. Fertilizer Classifications. Seed meals Cotton Soybean Green manures Mustard Vetch Peas. Straws Cereals Beans - PowerPoint PPT Presentation
Transcript of Fertilizer Classifications
346.T1
Model Agricultural Core Curriculum: SupplementUniversity of California, Davis
Organic and Inorganic Fertilizers
Fertilizer Classifications
• Organics– Natural organics– Major animal materials– Synthetic organics– Processed organics
• Inorganics– Super phosphate– Ammonium nitrate– Ammonium sulphate– Ammonium phosphate
346.T2
Model Agricultural Core Curriculum: SupplementUniversity of California, Davis
Organic and Inorganic Fertilizers
Natural Organics
• Seed meals– Cotton– Soybean
• Green manures– Mustard– Vetch– Peas
• Straws– Cereals– Beans
• Forest products– Barks– Sawdust– Humus
346.T3
Model Agricultural Core Curriculum: SupplementUniversity of California, Davis
Organic and Inorganic Fertilizers
Major Animal Materials
• Bloodmeal
• Hoofs and horns
• Bonemeal
• Tankage
• Manure– Solid– Liquid
346.T4
Model Agricultural Core Curriculum: SupplementUniversity of California, Davis
Organic and Inorganic Fertilizers
Synthetic Organics
• Urea
• Urea-formaldehyde
• Biuret
• Sulfur - coated urea
346.T5
Model Agricultural Core Curriculum: SupplementUniversity of California, Davis
Organic and Inorganic Fertilizers
Processed Organics
• Sewage sludge
• Processed crop residues
• Cannery wastes
346.T6
Model Agricultural Core Curriculum: SupplementUniversity of California, Davis
Organic and Inorganic Fertilizers
Organics
• Advantages– Soil tilth improvement.– Water holding capacity
increased.– Cation exchange capacity
increased.
• Disadvantages– Low concentration of
nutrients..– Difficult to determine
exact amounts of nutrients provided.
346.T7
Model Agricultural Core Curriculum: SupplementUniversity of California, Davis
Organic and Inorganic Fertilizers
Inorganics
• Advantages– Small amount of
fertilizer needed per nutrient provided.
– Easy to handle.– Ability to determine
the exact amount of nutrient provided.
• Disadvantages– Expensive.– May burn crop if not
used correctly.– Leaching of nitrates into
groundwater.– May be toxic to people
who apply them.
