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Ch. 10 Vocabulary

AB
AllelopathyThe release of a substance by one plant that is toxic to another plant.
Best Management PracticesA proven or time tested standard way of doing things that multiple organizations can use.
CompostingPiling organic materials under conditions that cause rapid decay. Reduces the carbon-nitrogen ratio and destroys many weed seeds & disease organisms.
Cover CropA crop planted to prevent erosion on a soil. Cover crops can be planted on soils not currently being farmed, between crop rows, or after main crop harvest.
Crop RotationPractice of growing a series of dissimilar types of crops in the same space in sequential seasons for various benefits.
Green ManureA crop grown with the intention of plowing under while still green to improve soil structure, fertility, tilth, organic matter, and nitrogen level (if a legume).
MesophilicOrganisms whose optimum temperature for growth is an intermediate range, between 59 and 95 degrees Fahrenheit. Dominant microorganisms in early & late stages of composting.
MulchMaterials such as straw, sawdust, leaves, plastic film, and the like, spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing, evaporation, and so on.
Organic StandardsA framework of guidelines and regulations that govern the production of organic crops.
ThermophilicAn organism that thrives at high temperatures. Optimum temperature range for growth is about 95 degrees Fahrenheit. Dominates composts during middle stage of decay.

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