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