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Thomas Edison is credited with inventing the first practical incandescent light bulb in 1879.
Toxicity of which element leads to the unavailability of iron and zinc
Microbe involved in biological oxidation of ammonium ion to nitrite ion is
The major microorganism that is considered most important as an indicator of soil quality is:
Biological oxidation of elemental Sulphur is carried out by which of the following bacteria?
In a well-aggregated soil, how does soil porosity influence the movement of air and water?
In soil, net Immobilization of Carbon & Phosphorus occurs when ratio is:
The EC of Sodic soil is __mmho/cm at 25 ℃ .
Water held between tension of 1/3bar to 31 bar in soil is classified as ____
Blue green algae is used for
It is the tendency of some crops to absorb and accumulate nutrients far in excess of their actual needs if it is present in sufficiently large quantitie...
