Science-Farming

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Pesticides
Are used to kill harmful insects or organisms to protect the well-being of other plants or animals. Examples of pesticides are herbicides, fungicides and insecticides.
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Disadvantages of pesticides
They enter and accumulate in food chains, causing lethal doses to predators / They can harm other organism living nearby which are NOT pests / Some take a long time to break down and become harmless
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Organic farming
Avoids expensive artificial fertilisers and pesticides but crops are often very small and the produce is often very expensive.
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Biological control
Uses living organisms to control pests; it acts as an alternative to pesticides. For example, many gardeners will introduce ladybirds to their gardens to kill off any aphids which feed on and damage plants.
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Advantages of biological control
Avoids the use of artificial insecticides, as living organisms are used, they generally do not need to be replaced.
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Disadvantages of biological control
The new (introduced) species often eat other useful species, rather than just the pest / Introducing a new species into a habitat to kill another species can affect the food sources of other organisms in a food web, causing unexpected results
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Intensive farming
Makes use of artificial pesticides and fertilisers.
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Advantages of intensive farming
Very efficient in producing high crop yield and does this cheaply
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Disadvantages of intensive farming
Animals are kept in very small spaces / Concerns about the effects of extensively using chemicals on soil structure and other organisms
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Hydroponics
A type of intensive farming that is generally used in areas where there is little rainfall or barren soil.
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Hydroponics
Plants grown without soil using a regularly recycled flow of aerated water (water with air) containing minerals, which usually takes place in glasshouses or polytunnels.
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Advantages of hydroponics
Hydroponic farmers have better control over mineral levels and disease – they can manipulate the mineral levels to increase productivity / Many plants can be grown in one (relatively) small space
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Other cards in this set

Card 2

Front

They enter and accumulate in food chains, causing lethal doses to predators / They can harm other organism living nearby which are NOT pests / Some take a long time to break down and become harmless

Back

Disadvantages of pesticides

Card 3

Front

Avoids expensive artificial fertilisers and pesticides but crops are often very small and the produce is often very expensive.

Back

Preview of the back of card 3

Card 4

Front

Uses living organisms to control pests; it acts as an alternative to pesticides. For example, many gardeners will introduce ladybirds to their gardens to kill off any aphids which feed on and damage plants.

Back

Preview of the back of card 4

Card 5

Front

Avoids the use of artificial insecticides, as living organisms are used, they generally do not need to be replaced.

Back

Preview of the back of card 5
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