Soil, Agricultral Unit Vocablary Crossword

shows how each 12 textures is classified based on the percent of sand, silt, and clay in each
a layer generally parallel to the soil crust
the topmost mineral horizon
soil layers with a high percentage of organic matter
the second and middle zone of soil
zone consisting mainly of unconsolidated, weathered rock fragments.
the layer of unconsolidated rocky material covering bedrock
the wearing away of topsoil
wear away or change the appearance or texture of something by long exposure to the air
a way of growing crops or pasture from year to year without disturbing the soil through tillage
make or form sloping land into a number of level flat areas resembling a series of steps
plowing along the contours of the land in order to minimize soil erosion
a fence, wall, or screen, that provides shelter or protection from the wind.
clearing a wide area of trees
negative impact on water supplies, wildlife and health
fertile land becomes desert
the salt content in the soil
saturate something with water
integrates practices for economic control of pests
a substance that is toxic to plants
a substance that is toxic to fungus
a substance that is toxic to insects
pesticides that are designed to kill or manage a wide variety of organisms
an example is DDT