The concept of environment and agricultural sustainability; An understanding of the causes and complexity of major global and regional environmental problems; Sources of pollutants and their effect on plant, soil, water and organisms; The consequence of agricultural activities on the environment; Chemistry of agricultural chemicals and their transformation in soil, plant and animals; Agricultural waste and their management including bioremediation; The impact of mining, forestry and industrial activities on the natural environment; Rehabilitation of eroded and degraded soil; Ecosystem management with particular examples in the tropics.