Pest Control

A pest is an organism which competes/ adversely affects a population or organisms
What pests do?
Chemical Control
Biological Control
That are of economic importance
Feed on crops and animals
Compete with crop organisms for resources
Directly cause disease in crop organisms
Spoil food when being transported/stored
It involves the use of
How can it be applied
What is a pesticide?
Advantages
Disadvantages
Herbicides
Fungicides
Insecticides
Spray
Powder
Smoked
Animal food
Poisonous chemical weed to control organisms
Considered harmful to agriculture
Or to an organism involved in disease transmission
Doesn't require high level of skill
very effective masses of control
Pests eradicated quickly and cheaply
Chemicals can be applied on a small scale
Some pests could harm fish or birds
Long term exposure is harmful to humans
Pests become resistant to pesticide
Eradication can cause resurgence
Contamination of food
Beneficial organisms are deployed against undesirable pest
Advantages
Disadvantages
Pests act as food source for introduced organism
Reduction in numbers of pest as eaten, keep numbers below economical damage threshold
Pests not eradicated completely as there would be no food source
No environmental contamination
Usually highly specific to one pest
used in glass house situations
Provide long term control if population eqilibrium is reached
very few successful examples
biological control agents slow to build up in numbers
High level of skill and research involved for success
Detailed knowledge of life cycle of pesticide is required

	Criado por paige-monaghan mais de 10 anos atrás

	Copiado para Nota por paige-monaghan mais de 10 anos atrás

A Levels Biology Notas sobre Population growth & Pest control. - created from Mind Map, criado por paige-monaghan em 03-02-2014.