explain an agricultural practices that has harmful effects on ecosystem
Answers
Some harmful effects of agricultural practices on the environment are:
i) Soil: Fertilizer added to soil not only changes the chemistry of the soil but also kills many useful microbes
.(ii) Ground water: A part of fertilizer always leaches down into soil and reaches ground water.It raises the salt content of ground water.
(iii) Eutrophication: Run-off from fields sprayed with fertilizer reaches water bodies.It results in their eutrophication.
(iv) Pesticides: Pesticides sprayed over crops reach water bodies killing the biota. Persistent pesticides undergo biomagnification and prove highly harmful to higher organisms.
(v) Ground water: Continued use of ground water in agriculture has resulted in lowering of water table at most of the places.
(vi) Irrigation: It causes water -logging and salivation of soils.
Explanation: