Which of the following actinomycetes is responsible for nitrogen fixation?
According to the mobility of element in soil; which of the following is considered as Immobile in soil.
Which sedimentary rock is formed from compressed plant remains?
The original source of most organic matter in soil is:
Which law defines the relationship between the settling velocity of soil particles and their size in a liquid medium?
Which rock is an example of a clastic sedimentary rock?
The acidic soils can be reclaimed by the application of ____
Which of the following is a complex fertilizer?
Disorders like Hollow Stem of Cauliflower; Browning of Cauliflower ; Top sickness of Tobacco is caused due to the deficiency of
Sand drawn disease in tobacco is caused due to the deficiency of ____
