Soil Science Oneliner for all Competitive Exam
2.
Red color of red soil is due to presence of Iron oxides.
3.
Most dominant mineral
present on earth crust is Feldspar (48%).
4.
Mechanical analysis of soil separation is done by Hydrometric method.
5.
Kaolinite is most dominant mineral
present in Red soil.
6.
Clay soil has highest total pore space.
7.
The weight of furrow slice of soil is 2.25x
106 kg/ha.
8.
Order of black soil is vertisol.
9.
The term Zero tillage is coined by Jethrotull.
10.
USA is the first country
to introduce zero tillage.
11.
The microorganisms has highest
biomass in soil is Fungi.
12.
National Bureau of Soil Survey
and Land Use Planning
is located Nagpur.
13.
Central Soil Salinity
Research Institute is located at Karnal Haryana.
14.
Central soil testing
laboratory is located
at Patna, Bihar.
15.
B horizon is also known
as illuvial horizon.
16.
A horizon is also known isElluvial horizon.
17.
O horizon is absent in Arable soil.
18.
O horizon is present
in forest soil.
19.
Highest production of FYM
is in Karnataka.
20.
C:N ration of micro organism
is 4:1 to 9:1
21.
Ammonical fertilizers should be applied
in Reduced zone.
22.
Nitrate fertilizer should be applied in Oxidized
zone.
23.
Wood is mainly decomposed by Actinomycetes.
24.
The smell of soil after
the fresh shower is due to Actinomycetes.
25.
Population of actinomycetes is higher in Alkaline soil.
26.
By adding organic matter Bulk density will decrease.
27.
Vermiculite is a 2:1 non-expanding type of mineral.
28.
Montmorillonite is a 2:1 expanding
type of mineral.
29.
Kaolinite is a 1:1 non-expanding type of mineral.
Sunhemp is most outstanding green manure crop.
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