Water analysis of a bore well reports as under
CO32- : 1.2 mel-1
HCO32- : 4.0 mel-1
Ca2+: 2.6 mel-1
Mg2+: 1.5 mel-1
Calculate the RSC (residual sodium carbonate) in the bore well water
RSC = [HCO3 + CO3] − [Ca + Mg]= (1.2+4.0)-(2.6+1.5) 5.2-4.1=1.1 me/l
Biological oxidation of elemental Sulphur is carried out by which of the following bacteria?
Heaviness and lightness of soil refers to
Element involved in nitrogen fixation
According to the mobility of element in soil; which of the following is considered as Immobile in soil.
Bray-1 test is used to determine phosphorous in
Saline and alkali soils commonly contain which carbonates and a relatively high concentration of soluble salts:
Sand drawn disease in tobacco is caused due to the deficiency of ____
Downward movement of water through saturated soil is called as ___
Which of the following is acid tolerant crop?
What is the term for the arrangement of soil particles into clumps or aggregates?
