This document presents information on river pollution from agricultural runoff. It discusses the main sources of pollution including sediment, fertilizers, and pesticides used in agriculture. Fertilizers and pesticides contain high amounts of nutrients that pollute rivers. Agricultural waste also contaminates rivers. This pollution has negative impacts on human health like various diseases. The document recommends reducing chemical fertilizer and pesticide use, recycling wastes, and implementing river cleaning projects to control agricultural pollution.

1.  PRESENTED BY :
 Sahil Nalkande
PAPER PRESENTATION ON
River pollution by
agriculture runoff

2. PAPER
PRESENTATION
ON River
pollution
by
agriculture
runoff.

3.  Introduction
 Sources of pollution
 Pollution by fertilizer
 Pollution by pesticides
 Pollution by waste product
 Impact on human health
 Control feature for pollution
 Conclusion
 Reference

4.  Agriculture is a dominant component of the global economy. It is
well known that agriculture is the single largest user of
freshwater resources, using a global average of 70 % of all surface
water supplies. Except for water lost through evapotranspiration,
agricultural water is recycled back to surface water and/or
groundwater.
 However, agriculture is both cause and victim of water pollution.
It is a cause through its discharge of pollutants and sediment to
surface and/or groundwater, through net loss of soil by poor
agricultural practices and through salinization and waterlogging
of irrigated land. Agricultural pollution is both a direct and indirect
cause of human health impacts.
 "AGRICULTURE is the leading source of impairment in the Nation's
rivers and lakes ".

5.  Pollution by Sediment
 Sediment as a Physical pollutant
 Sediment as a Chemical pollutant
 Pollution by Fertilizers
 Pollution by Pesticides

6.  Any substances that are added to soil and serve as
plant nutrients are called ‘fertilizers’.
 In order to maintain soil fertility and to increase
production of crop-plant certain substances are
added to the soil called fertilizers.
 Fertilizers consist of large amount of nitrogen and
phosphorous contents.
 Hence river water gets polluted Fertilizers consist
of large amount of nitrogen and phosphorous
contents.

7.  The term "pesticide" is a composite term that
includes all chemicals that are used to kill or
control pests
 In agriculture, this includes herbicides (weeds),
insecticides (insects), fungicides (fungi), nematodes
(nematodes), and rodenticides (vertebrate poisons)
with the "chemical age".
 The impact on water quality of river by pesticides
is associated with the following factors:
 Active ingredient in the pesticide formulation.
 Contaminants that exist as impurities in the active
ingredient.

8.  The contamination of degradation of agricultural
wastes such as herbage, straw, rotten fodder,
corn-stalks, sugarcane-bagasse, oil-cake, rice-bran,
waste from fruits and vegetables processing etc
into the river water causes river pollution.
 Runoff of salts leading to salinization of surface
waters; runoff of fertilizers and pesticides to
surface waters with ecological damage.

9.  Viruses, bacteria, worms in polluted water cause
diseases like cholera, jaundice dysentery, typhoid,
hepatitis
 Inorganic compounds like phosphates in polluted
water cause damage to respiratory and vascular
systems.
 Particulate pollutants may
change colour, odour,
taste, clarity of water
making it

10.  Recycling of wastes : The agricultural waste
products may be recycled to generate gas
electricity.
 Use of organic fertilizers & pesticides should be
minimum.
 Action plant to clean river water should be
implemented.
 e.g. Ganga Action Plant.

11. • The main reason of
pollution of ganga in
extensive proportion of
ammonia and phosphorous .
• By avoiding the use of
pesticides and fertilizer we
can prevent the ganga
water pollution.

12.  From above presentation on
river pollution by agricultural
runoff have concluded that
prevention is necessary for
pollution that has be prescribed
in above presentation and
prevention is necessary for river
pollution. And for safety majors
for that be Eco buddy. Avoid the
usage of chemical fertilizers.

13.  Anderson, J.R.
 Dillon, J.L. and Hardaker, J.B, 1977
 Agricultural Decision Analysis.
 Iowa State University Press.
 Bulletin of the American Meteorological Society.