pests & pesticides Flashcards
1
Q
what is a pest
A
any organism that reduces the yield of a crop
2
Q
2 ways to control pests
A
pesticides or biological control
3
Q
what pesticide kills plant pests
A
herbicides
4
Q
what pesticide kills insects
A
insecticides
5
Q
what pesticide kills fungi
A
fungicides
6
Q
what pesticide kills molluscs (slugs&snails)
A
molluscicides
7
Q
why are pesticides used
A
to kill specific pests and improve the yield from crops & livestock
8
Q
farmers need to balance
A
the costs of pesticides to their profit made
9
Q
advantages of pesticides
A
reduces pest population instantly
can kill the whole population
10
Q
disadvantages of pesticides
A
cost - regular application
not specific - kills additional
pests can become resistant
chemical can trace higher up in food chain
