R2103 1 DIFFERENT TYPES OF CONTROL

Question 1

Physical control definition

Answer 1

Material, mechanical or hand control where the weed, pest or disease is directly blocked or destroyed

Question 2

Physical control benefits x2

Answer 2

• Once established, remains for a long time

* Low maintenance

Question 3

Physical control limitations x2

Answer 3

• Can be expensive to set up

* Can cause soil sterilisation and if pest or disease gets introduced it can cause much bigger impact

Question 4

Physical control examples x1

Answer 4

Barrier - weed membrane, blocks sunlight for emerging weeds

Question 5

Physical control enviromental risks

Answer 5

When not needed should be appropriatly destroyed as burning plastic can produce toxic fumes etc.

Question 6

Cultural control definition

Answer 6

is a procedure or manipulation of the growing environment that results in weed, pest or disease control.

Question 7

Cultural control benefits x2

Answer 7

• They fit with a regular routines e.g. feeding of the plants
• They have long lasting effects

Question 8

Cultural control limitations x2

Answer 8

• Can time time consuming

* May lack the rapid control seen in chemical control

Question 9

Cultural control example

Answer 9

The use of fertilisers - when adding major and minor nutrients it allows the plants to grow healthy and more resistant to pests and diseases

Question 10

Cultural control enviromental risks

Answer 10

Overfertilising the growing media can cause the nutrients to leech into the waterways which can cause the grown of algea which then can kill the fish

Question 11

Chemical control definition

Answer 11

Is the use of chemical substances intended to prevent or kill weeds, pests and diseases

Question 12

Chemical control benefits x 2

Answer 12

• Control produces rapid control

* Producs are easily accessible

Question 13

Chemical control limitations x2

Answer 13

• Products can be harmful to humans, animals and plants

* Can caise resistant strains to develop

Question 14

Chemical control example

Answer 14

Herbicide - chemicals that are used to weed control i.e. glyphosate

Question 15

Chemical control - enviromental risks

Answer 15

Herbicide affect every plant that is in contact unless they are resistant to need to be applied very carefully and on a still day

Question 16

Biological control definition

Answer 16

The use of natural enemies to reduce the damage caused by pest or disease

Question 17

Biological control benefits x2

Answer 17

• Non-toxic to humans, wildlife and pets

* A natural balance of parasite and predators is reached

Question 18

Biological control limitations x2

Answer 18

• Required careful applicatio and knowledge of life cycles

* Can be easily affected by pesticides

Question 19

Biological control example

Answer 19

Introducing indigenous specials like ladybirds who eat aphids

Question 20

Biological control enviromental risk

Answer 20

Can be minimised by understanding what is being introduced

Question 21

Natural balance definitions

Answer 21

It is important in plant protection because without any pests there would be no predators which also help in plant pollination

Question 22

Benefits of lady birds

Answer 22

Both larvae and adults eat aphids and other insects

Question 23

Benefits of lacewings

Answer 23

Eat aphids

Question 24

Benefits of hoverfly adult

Answer 24

Pollination

Question 25

Benefits of hoverfly larvae

Answer 25

Eat aphids

Question 26

Benefits of frogs

Answer 26

Eat slugs

Question 27

Benefits of hedgehogs

Answer 27

Eat slugs

Question 28

Benefits of birds

Answer 28

Eat catterpillars etc.

Question 29

How beneficial organisms can be encouraged x2

Answer 29

• Using plants that attract pollinators

* Installing specific habitats i.e. ponds to attract frogs

Question 30

How garden practices can disturb these practices

Answer 30

• The use of pesticides - can kill benefitial insects which would help with pest control. Also killing all the pest would disturb natural balance and cause decline of beneficial insect population
• Cutting hedges during nesting season - if nests are disturbed it can reduce the amount of benefitial birds in the garden which prey on pests

Question 31

Restoring and maintaining habitats x2

Answer 31

• Planting plants that can be used as habitats for beneficial insects or for them to lay eggs on
• Planting sacrificial plants in the garden which attract pests and help protect the crops but not destroying the pests which would still provide food for benefitial animals

Question 32

How the selection of plants can help to avoid plant health problems x2

Answer 32

• Buying healthy looking plants that have no visible pest or disease damage help preventing introducing them in the garden
• Some cultivars are bred specifically to be resistant i.e. potato ‘Charlotte’ is resistant to blight
• Buying from certified stock