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1. BASICS OF VERMICOMPOSTING: TERMS AND TECHNIQUES
Acid : A liquid that tastes sour and smells somewhat sharp. Acids help dissolve rock and break
down food. It is a normal product of decomposition. Redworms do best in a slightly acid soil
(pH less than 7) environment. Below pH 5 can be toxic. Addition of pulverized egg shells and/or
lime helps to neutralize acids in a worm bin (Figure 1).
Figure 1. pH scale [10]
Aggregation : Clustering, as when soil particles form granules that aid in aeration and/or water
penetration.
Aeration : Exposure of a medium to air which allows exchange of gases.
Aerobic : Pertaining to the presence of free oxygen. Organisms that utilize oxygen to carry out
life functions.
Air : Mixture of atmospheric gases, including nitrogen, oxygen, carbon dioxide, and other gases
in smaller quantities.
Albumin : A protein in cocoons that serves as a food source for embryonic worms. Found in
egg whites.
Anaerobic : Pertaining to the absence of free oxygen. Organisms that can grow without oxygen
present.
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