Memory Game PLSC101 Memory Game 2Online version Lab Group 7 Topics: Soil parts and tillage by cindy s Made up of decaying animal and plant residue degraded by organisms Mulch Tillage Top layer of soil that is made up of organic matter, water, air and mineral particles Deep tillage to bury residue, followed by shallow tillage to smooth Conventional Tillage Light tillage to mix up and move crop residue on the surface. Ridge Tillage Moldboard Plow Topsoil Organic component of decomposed leaves and plant material Gravitational Water Conservation Tillage Soils that are formed under grasslands, very good for crop growth. No-Till Mollisol Pore Space Organic Matter Humus