A. Sodic soil
B. Saline soil
C. Acidic soil
D. None of the above
Related Mcqs:
- The conductivity of a saturation extract is greater 4 dsm-1 an exchangeable sodium percentage (ESP) of less than 15 and the pH is usually less than 8.5 is called as__________________?
A. Saline soils
B. Saline-sodic soils
C. Sodic soils
D. Neutral soils - Any material such as straw, sawdust, leaves, plastic films, & loose soil that is spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing or evaporation:
A. Mull
B. Mulch
C. Mycorrhizae
D. MuckSubmitted by: Shafiq Rehman
- Soil additive which stabilizes the soil, improves resistance to erosion, increases to permeability to air & water, improves texture, eases cultivation or otherwise improves soil quality:
A. Soil amendment
B. Soil conditioner
C. Both a & b
D. None of the aboveSubmitted by: Shafiq Rehman
- A soil is classified as sodic soil when______________________?
A. EC is 8.5
C. SAR is >13
D. All the above - Soil particles having diameter greater than 2 mm are called___________________?
A. Clay
B. Silt
C. Sand
D. Gravel - Soil particles as individuals such as sand and do not form aggregates. These are usually found in parent material or C horizon is:_________?
A. Massive
B. Single-grained
C. Aggregated
D. All of the aboveSubmitted by: Shafiq Rehman
- Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?
A. Agregation of soil particles
B. Cementing of soil particles
C. Dispersion of soil particles
D. All the above - Organic P content in soil, by ignition method is estimated by igniting the soil at ____________________?
A. 250ºC
B. 1000ºC
C. 550ºC
D. 1250ºC - The major soil fertility problems in Pakistani soils deficiencies of N, P and Zn. Deficiencies K, Fe, and B also occur in specific crop genotypes or soil types, while deficiencies of S, Cu, and Mn are negligible. however, the common nutrient deficiencies are_________________: and some micronutrients including Mo?
A. N, P, K
B. Ca, Mg, S
C. both A & B
D. The above statement is wrongSubmitted by: Shafiq Rehman
- Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:
A. Acid rain
B. Neutral rain
C. Both A & B
D. None of the aboveSubmitted by: Shafiq Rehman