A. 60
C. 50-70
D. 80-90
Related Mcqs:
- The deficient macronutrient in the sodic soils is:_______?
A. Mg
B. Ca
C. Mo
D. CuSubmitted by: Shafiq Rehman
- Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?
A. Alkaline
B. Very much acidic
C. Calcareous
D. both A & CSubmitted by: Shafiq Rehman
- Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?
A. Peat soil
B. solonchalk soil
C. Muck soil
D. Both a and cSubmitted by: Shafiq Rehman
- Organic Soils are classified as ____________ and are also known as ____________ soils:
A. Alfisols. fine & coarse textured
B. Histosols, peat & muck
C. Ultisols, Fe & Al rich
D. None of the aboveSubmitted by: Shafiq Rehman
- Organic matter decomposes rapidly in Pakistani soils because of ____________ conditions, that is why our soils generally have < 1% organic matter:
A. High temperature
B. Alkaline
C. Both a & b
D. None of a & bSubmitted by: Shafiq Rehman
- The forest soils have lower bulk density than agricultural soils because of their ______ content.
A. High organic matter
B. Low organic matter
C. Both a & b
D. None of theseSubmitted by: Adnan
- The deficient level of N (%) in plants suggested by various workers is____________________?
A. 0%
B. 3%
C. 5%
D. 10% - Depending on the percentage of sand, silt, clay, soils are divided into _______ textural classes:
A. 12
B. 13
C. 14
D. 09Submitted by: Shafiq Rehman
- Which element is deficient in milk _________?
A. Iron
B. Phosphorus
C. Sodium
D. CalciumSubmitted by: Dr Sarfaraz Mirwani
- According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation process. As the case in arid and semi-arid climates elsewhere in south-central/southern Asia and Sub-Saharan Africa; _________________ are among the major causes of soil degradation and desertification?
A. Drought stress
B. Accelerated erosion & salinization
C. Depletion of soil fertility and SOM
D. All of the aboveSubmitted by: Shafiq Rehman