Soil Science Oneliner for all Competitive Exam
1. Maximum phosphorus availability in the range 6.0 to 6.5
2. The most deficient micronutrient in soil is zn
3. Soil fertility and fertilizers was written by Samuel l tisdale.
4. Intracellular deposits of silicon
element is known as plant
opals.
5.“Indian society of soil science” (ISSS) headquarters is located
in New Delhi, 1934.
6.“International soil reference and information centre”
is located in Netherland(1966).
7.“International union of soil science” Australia(1924).
8. For nitrification optimum ph is 8.5.
9. Humus fraction lightest
in colour is fulvic acid.
10. Pedoturbation is the process of soil mixing.
11. In India, Histosols
soil order have negligible area.
12. Partical density of clay soil is 2.8 cm/cc.
13. First production of fertilizer in india is single super phosphate(SSP) 1906.
14. Calcareous soil is formed in arid as well as humid region.
15. Active soil forming
factors are climate
and organism.
16. Fungi have add highest biomass
in soil.
17. Soil colour determination by munsell’s Colour chart.
18. Positive bacteria colour is red.
19. “Sulphur institute” is located in Washington DC (1960).
20. First product of urea is ammonium carbonate.
21. Foliar application is best method
for application of Fe and Zn.
22. Soil application is the best method for Ca, B, S, and Mo.
23. Kandic and arfullic
origin found in alfisol order.
24. Surface colour of alkali soil is black.
25.Lowest classification of soil is series.
26. Sugerbeet is an indicator plant for sodium.
27.Wheat is an indicator plant for copper.
28.Silicon is essential
for Rice and Maize.
29.PH of cat clay soil <4.
30. Phosphorus solubilizer bacteria
besillus, aspergillus and pseudomonas( trick
BAP).
