Additional information

ENVIRONMENTAL STUDIES
Lesson 17: Soil pollution

Additional information


Type of pesticide

Examples

Insecticide

DDT, BHC, Aldrin, Endrin, Heptachlor, Parathion, Malathion

Herbicide

2 – 4 D, 2 – 4 – 5 T, Monuron, Atrazine

Fungicide

Dithiocarbamates,O Phenol, CAPTAN

Rodenticide

Strychnine, Sodium fluoroacetate, Norbormide

Drainage line Treatment

PURPOSE

TREATMENT MEASURE

EFFECT

Stop further deepening of gullies and retain sediment run-off.

Plug the gullies at formation.

Stops erosion, recharges
Groundwater at the upper level.

Reduce run-off velocity, pass cleaner water to the downstream side.

Crete temporary barriers in nalas.

Delayed flow and increased groundwater recharge.

Minimum sedimentation in the storage basins.

Use various methods to treat the catchments


Low construction cost.

Use local materials and skills for constructing the structures.

Structures at locally maintained.

Area Treatment


PURPOSE

TREATMENT MEASURE

EFFECT

Reduce the impact of rain drops on the soil.

Develop vegetative cover on the non arable land.

Minimum disturbance and displacement of soil particles.

Infiltration of water where it falls.

Apply water infiltration measures on the area.

In-situ soil and moisture conservation.

Minimum surface run-off.

Store surplus rain water by constructing bunds, ponds in the area.

Increased soil moisture in the area, facilitate ground water recharge.

Ridge to valley sequencing.

Treat the upper catchments first and then process towards the outlet.

Economically viable, less risk of damage and longer life of structures of the lower catchments.

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Last modified: Monday, 2 January 2012, 7:07 AM