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SOIL
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SOIL
SOIL FERTILITY
- MAJOR NUTRIENTS
- CALCIUM (Ca)
- POTASH (K)
- NITROGEN (N)
- MAGNESIUM (Mg)
- PHOSPHATE (P)
- SULPHUR (S)
- SODIUM (Na)
- MINOR NUTRIENTS
- IRON (Fe)
- MANGANESE (Mn)
- BORON (B)
- ZINC (Zn)
- COLBALT (Co)
- COPPER (Cu)
- FERTILIZERS
- INORGANIC FERTILIZERS
- N:P:K
- Written and a percentage
- Always written in this order
- N:P:K
- STRAIGHT FERTILIZERS
- Supply only one major nutrient
- Eg. Extran ammonium nitrate - 34.5% N
- Eg. Triple Superphosphate 47% P2O2
- Supply only one major nutrient
- COMPOUND FERTILIZERS
- Supplies two major nutrients
- Maincrop: 14:14:21
- Extra Grass: 27:5:5
- Supplies two major nutrients
- FARMYARD MANURE AND SLURRY
- Valuable Resource
- Must be applied carefully
- Release of nutrients is slower and less predictable than inorganic fertilizer
- Must quantify amounts of nutrients
- INORGANIC FERTILIZERS
- MAJOR NUTRIENTS
SOIL TEXTURE
- SAND
- Free Draining
- Particle Size: 0.06 - 2.0
- Light Soil
- Poor Retention of Nutrients
- SILT
- Particle Size 0.002 - 0.06
- Limited Nutrients
- Holds Water
- CLAY
- Particle Size: <0.002
- Retains Nutrients Well
- Heavy Soil
- Holds Water Well
- SAND
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- Description
- Agriculture Mind Map on SOIL, created by 12178000 on 20/05/2013.
- Created by
- 12178000
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