Alternative Sources of Fertilisers (Grade 12 NSC Matric Physical Sciences): Flashcards
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Source of organic fertilisers
Source of organic fertilisers
Natural sources, not manufactured by humans
Before plants absorb organic fertiliser nutrients
Before plants absorb organic fertiliser nutrients
They must degrade first
Definition of manure
Definition of manure
Solid waste product from animals
Three main nutrients in manure
Three main nutrients in manure
Nitrogen, phosphorus, potassium
Source of guano
Source of guano
Excretion of seabirds, bats, and seals
Nutrient guano is particularly rich in
Nutrient guano is particularly rich in
Phosphorus
Purpose of crop rotation
Purpose of crop rotation
Manage soil nutrients naturally
Where nitrogen-fixing bacteria are in legumes
Where nitrogen-fixing bacteria are in legumes
Nodules on roots
Lime's effect on soil pH
Lime's effect on soil pH
Increases pH, makes soil less acidic
What potash contains
What potash contains
Water-soluble potassium salts