The anthropic horizon is a human-modified surface horizon that is rich in phosphorus due to long-term manuring or waste disposal, typically seen in ancient agricultural lands. This horizon is rare in India, whereas Mollic, Ochric, and Umbric horizons are common due to varied agro-climatic conditions. For example, Mollic is found in black soils, Ochric in arid/semi-arid regions, and Umbric in forest soils with high organic matter but lower base saturation.
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100 Questions
100 Marks
120 Mins English English60 Questions60 Marks45 Mins English English30 Questions30 Marks27 Mins English| Set A (Scientist) |
Set B (Contribution) |
| [i] Thomas Way |
[a] Borax |
| [ii] Thomas Graham |
[b] Ammonium molybdate |
| [iii] Sorenson |
[c] Copper sulphate |
| [iv] Schofield |
[d] Zinc sulphate |
| Set A |
Set B |
| [i] Robinson |
[a] Pipette method |
| [ii] Yoder |
[b] Wet sieving |
| [iii] Munsell |
[c] Colour chart |
| [iv] Atterberg |
[d] Consistency limits |
The process of enrichment of surface water bodies with nutrients is called
The essentiality of Molybdenum was discovered by
Which one of the following is the active factor of soil formation?
The highest category of soil classification system is
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