Mineral soil contain organic carbon___________________?

A. >4%
B. 5%
C. <20%
D. >10%

Related Mcqs:

Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:
A. 72 %
B. 58%
C. 62 %
D. Al of the above
Submitted by: Shafiq Rehman
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. Muck
Submitted by: Shafiq Rehman
The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?
A. 3-15 meq/100g CEC
B. 40 meq/100g CEC
C. 50 meq/100g CEC
D. None of the above
Which mineral contain phosphorus__________________?
A. Igneous
B. Metamorphic
C. Apatite
D. None of 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
Chlorophyll contain which mineral nutrient?
A. Ca
B. Mg
C. S
D. P
Submitted by: Shafiq Rehman
__________________ systems play a crucial role in increasing soil organic C storage and reducing net emissions of greenhouse gases in addition to soil erosion control:
A. Engineering
B. Agroforestry
C. Cultivating
D. All of the above
Submitted by: Shafiq Rehman
A mineral horizon that is either too thin, too light in colour, too low in organic matter:
A. Umbric epipedon
B. Melanic epipedon
C. Mollic epipedon
D. Ochric epipedon
Submitted 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 c
Submitted by: Shafiq Rehman
Walkley and Blacks method of organic matter determination allows recovery of _____% organic carbon content:
A. 74 %
B. 54 %
C. 62.5 %
D. 34%
Submitted by: Shafiq Rehman