Agriculture affecting water quality

tillage on surface water

Sediments carry phosphorus and pesticides absorbed to sediment particles

Situation of river beds and loss of habitat spawning ground

Fertilizing on surface water

Run off nutrients especially phosphorus leading to eutrophication causing taste in public water supply where excess algae growth leading to deoxygenation of water and fish kills

Fertilizing on ground water

Leaching of nitrate to ground water and excessive levels are a threat to public health

Irrigation on surface

Runoff salt leading to agonizing of surface water

Runoff fertilizer and pesticides leading to ecological damage and bioaccumulating. In edible fish

Irrigation of ground water

Enrichment of groundwater with salts and nutrients

Salinization definition

Direct product of irrigation in soil

An increase of the salt in which happens when the ground water levels are close to the surface

As increase amounts of water are being brought to surface there is evaporation happening and therefore any soluble salts that water was carrying are left behind

occurs when the water in soils evaporates in high temperatures drawing salts from soil to surface

Slats are toxic to many plants and make the land unusable leading to low yields poor profit and starvation

Irrigation definition

Process of controlling water supply in order to safer crops or agriculture land

Water taken from surface stores of from groundwater

Happens in both LIC and HI. where there is not enough precipitation to produce crops

Eutrophication

Increases amounts of nitrogen and phosphorus carried into streams

Leading to nutrient enrichment

Algae blooms and cut off light supply for submerged plants

Anoxia

Case study

Eutrophication in Australia

Eutrophication diagram

Nutrients get to water leading to algae growth blocking sun light

Plants die and algae dies

Bacteria digest dead plants using oxygen producing carbon dioxide

Fish die without oxygen