DAP fertilizer available in Pakistan contains__________________________?
A. 18% N & 46% P2O5
B. 46%N & 18%P2O3
C. 100%P2O3
D. 50%P2O3
Soil Science
Acid soil contain pH____________________?
Acid soil contain pH____________________?
A. <7
B. >7
C. >7.0
D. 8.5
The factor used for conversion of P to P2O3 is____________________?
The factor used for conversion of P to P2O3 is____________________?
A. o.453
B. 0.643
C. 0.436
D. None of the above
The zorawar is brand name of ___________________?
The zorawar is brand name of ___________________?
A. TSP
B. DAP
C. MAP
D. None of the above
Microorganisms have C/N ratio of____________________?
Microorganisms have C/N ratio of____________________?
A. 2:1
B. 4:1
C. 12:1
D. 20:1
How much percentage of soils of Pakistan are deficient in P______________________?
How much percentage of soils of Pakistan are deficient in P______________________?
A. 60
C. 50-70
D. 80-90
A soil is categorized as saline when EC of saturation extract is______________________?
A soil is categorized as saline when EC of saturation extract is______________________?
A. >4dsm-1
B. 0.4dsm-1
D. 0.4 4.0 dsm-1
pH in coniferous forest is__________________?
pH in coniferous forest is__________________?
A. Less than 7
B. Neutral
C. Greater than 7
D. Basis
Ligands that occur in Pakistan soils are__________________?
Ligands that occur in Pakistan soils are__________________?
A. OH1 HCO2
B. SO4-2 OH
C. CO3-2 SO4-2
D. All the above
An ion or molecule in the coordination sphere central ion is called__________________?
An ion or molecule in the coordination sphere central ion is called__________________?
A. Complexion
B. Ligand
C. Chelate
D. Potential