Section l Concept of soil tillage and basic manipulation 、 Concept of soil tillage Tillage- The mechanical manipulation of the soil profile for any purpose Soil tillage-oldest procedure of agriculture to manipulate the soil to improve crop production Farmers of West Africa preparing their land for planting.Section1 Concept of soil tillage and basic manipulation 一、 Concept of soil tillage Tillage- The mechanical manipulation of the soil profile for any purpose. Soil tillage - oldest procedure of agriculture to manipulate the soil to improve crop production. Farmers of West Africa preparing their land for planting