What is a soil horizon?
What is a soil horizon?
A. Soil texture
B. Soil structure
C. Layers of soil
D. All of these
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The drawbacks of erosion can be divided into:__________?
The drawbacks of erosion can be divided into:__________?A. Onsite damages
B. Offsite damages
C. Both A & B
D. None of the aboveIn cation exchange, 18 mg of Ammonium ion can be exchanged for__________?
In cation exchange, 18 mg of Ammonium ion can be exchanged for__________?A. 40 mg of Ca
B. 46 mg of Na
C. 6 mg of Al
D. 12 mg of mgOrganisms satisfying their carbon requirement as Co2 from atmosphere and energy requirement from oxidation of simple inorganic compound are called as_________?
Organisms satisfying their carbon requirement as Co2 from atmosphere and energy requirement from oxidation of simple inorganic compound are called as_________?A. Chemoautotroph
B. Photoautotroph
C. Saprophyte
D. None of theseInternational Union of Forest Research Organization (IUFRO) is located:
International Union of Forest Research Organization (IUFRO) is located:A. Pakistan
B. Germany
C. Austria
D. Both a & b_________is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?
_________is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?A. Nitrogen
B. Potassium
C. Aluminium
D. CalciumPermanente wilting point of clayey soils is not less than____________________?
Permanente wilting point of clayey soils is not less than____________________?A. 20%
B. 10%
C. 5%
D. 15%