Actinomycetes have been shown recently to fix atmospheric nitrogen in symbotic association with

The highest pH value is

Textural class of the siil depends on

The soil particles get defloculated due to

A soil is designated as clay when it contain clay seperates a minimum of

The C:N ratio of humus is

The term Agricultural lime refers to

In strongly acid soil each mole og Al on hydrolysis give how many moles of H+

An example of 2:1:1 of clay is

With increase in percentage base saturation of the soil, the fertility status of soil is

The CO2 content of soil air is

Average particle density (Mg/m3) of mineral surface soil is

The bulk density (Mg/m3) of organic matter is

Montmorillonite is a dominant clay mineral in

The co-ordination number of silicon in a clay mineral is

The process of separation of volloidal particles from crystalloid known as

Somatic hybrid may be

The sexual process in bypassed in

Multiple identical copies of a gene can be obtained by

Hard technologies refer to