This document discusses several modern agricultural techniques including polyhouse farming, precision farming, hydroponics, and aeroponics. Polyhouse farming involves cultivating crops under protected structures to control temperature, humidity, sunlight, and winds. Precision farming uses sensors and software to monitor and respond to variability in soil and crops. Hydroponics grows plants in nutrient-rich water instead of soil. Aeroponics similarly grows plants without soil by suspending plant roots in the air and misting them with nutrient solutions.

1. EMMANUEL COLLEGE OF B.Ed
TRAINING
VAZHICHAL,KUDAPPANAMOODU
2014-2015
ATHIRA B P NAIR
NATURAL SCIENCE
CANDIDATE CODE:18114361002

3. It is a knowledge-based agricultural system that use
technology to increase value and quality of farm's produce.

4.  Poly house farming is
cultivating crops under
protected conditions.
 It can provide higher
temperature and humidity than
are available in the environment.
 The polyhouses can also
protect crops from intense
heat, bright sunlight and
strong winds.
 It yields more crops than
normal farming.

5.  Precision farming is a farming
management concept based
on observing, measuring and
responding to inter and intra-
field variability in crops.
 The soil is covered by
polythene sheet to limit water
flow and by controlling the
growth of weeds is the
effiency of this technique.

6.  Hydroponics is a subset of
hydroculture and is a method
of growing plants using
mineral nutrient solutions, in
water, without soil.
 Terrestrial plants may be
grown with their roots in the
mineral nutrient solution only,
or in an inert medium, such as
perlite or gravel.

7.  Aeroponics is the process of
growing plants in an air or mist
environment without the use
of soil or an aggregate
medium
 Aquaponics which uses
water and fish waste,
aeroponics is conducted
without a growing medium.