primary soil meaning in Hindi

Examples

1. Some of these chemical contaminants have long half-lives and in other cases derivative chemicals are formed from decay of primary soil contaminants.
2. One should also distinguish soil maps that display primary soil attributes, i . e . the soil attributes originally described or measured in the field, and the soil inferred attributes also called secondary soil information, i . e . the properties of the soils in the context of the soil use : soil production capacity, soil reaction to certain use, soil functions, soil degradation measures etc.