1. By : T.Narmathan.
2012/FM/069
Human & Modern Agriculture 1

2.  Where do we get our
supply of food and
vegetables, fruits,
flowers?
Did you know?!
Do they cultivate and maintain in good manner?
Human & Modern Agriculture
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3. Use of pesticide good or bad..?!
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4. Soybeans
38%
Grains
18%
Tobacco
8%
Fruit
18%
Vegitables
11%
Other
7%
Pesticide active ingredients used in
Sri Lanka..
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5. Advantages of modern Agriculture..
 Irrigation technologies.
 Use of synthetic fertilizers.
 Genetic manipulation.
 Chemical pest control.
 Intensive tillage.
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6. Disadvantages of modern
Agriculture..
 The excessive use of chemical
fertilizers have decreased the fertility
of soil.
 The money spent for agriculture
have increased.
 The pesticides that we use for killing
pests kills the efficient insects too.
 The water holding capacity of the
soil will be decreased.
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7. Organic
Farming:
It produces
quality food without
using any chemical
fertilizer or
pesticides, helps
reduce diseases, and
lowers the
environmental
impact.
What are the Alternatives..
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8.  Hydroponics:
In this method, plants
are grown not in the soil but
in water containing
dissolved nutrients in
greenhouses.
What are the Alternatives..
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9.  Biological
Control:
Using a predator
intentionally to fix the pest
population size is known as
biological control. This
technique demands utmost
caution and thorough
study, as it could go all
wrong, if not managed
properly.
What are the Alternatives..
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10. Human & Modern Agriculture 10

11. HUMAN & MODERN AGRICULTURE 11