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Biological Control of Pests

ESSENTIAL QUESTION:

How are Non-Biodegradeale wastes di!erent fro"Biodegradeale wastes#

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OB$ECTI%ES

&' (e)ne Biocontrol'

*' (isc+ss t,e negatie res+lts of

+sing .esticides and w,/ we s,o+ld

+se iocontrols instead'

0' List 1 t/.es of iocontrols and

e2.lain ,ow t,e/ wor3'

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What is a pest?4 A .est inades a new,aitat wit,o+t eingacco".anied / a nat+ralene"/'

4 E5A6PLES: .lants 7weeds8or ani"als 7insects8

4 No Ene"ies 9

+ncontrolled growt, of.o.+lation

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How do we +s+all/ 3ill a

.est#4 Insecticide-kills insects(sub-group of pesticides)

4 Herbicide-kills plants

4 Pesticides-kills anythingharmful to plants or other

animals

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,at are t,e negaties of

+sing c,e"icals#4They are not easily brokendown !T"# in ecosystem$ cause %"&"' to

species

4They are *+T !P,II,--canunintentionally harm other

plants and animals

4.pensi/e to use0apply

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How can we control .ests

nat+rall/#1I+2+'I,"2 ,+*T3+2!

Control of .est .o.+lations t,ro+g, t,e +seof organis"s t,at are nat+ral .redators;

.arasites; or .at,ogens'

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E5A6PLES O