The density measured by
The particle density of normal soil is
The oxygen percentage in the soil air is
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Solution
Soil Air Composition
N2 CO2 O2 Atmosphere 79.00 0.03 20.95 Surface Soil 79.80 0.15-2.0 18.20 Compost 79.80 6.72 13.98 Organic Soil 79.80 1.85 18.23 Clay 79.80 0.66 19.69 Loam 79.80 0.62 19.20 Sandy 79.80 0.03 19.95
………………. nitrogen present in the soil air.
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Solution
Soil Air Composition
N2 CO2 O2 Atmosphere 79.00 0.03 20.95 Surface Soil 79.80 0.15-2.0 18.20 Compost 79.80 6.72 13.98 Organic Soil 79.80 1.85 18.23 Clay 79.80 0.66 19.69 Loam 79.80 0.62 19.20 Sandy 79.80 0.03 19.95
The force with which the moisture is held by the soil at a point corresponding to 15 atmospheres is
Major source of water used by the plants are
CEC of vermiculite is
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Solution
CEC of different clays
CEC represent-the total cation absorbing capacity of soil.
CEC of humus - 100-300 millions/100 g
CEC of chlorite - 20-40 millions/100 g
CEC of illite - 20-40 millions/100 g
CEe of montmorillonite - 60-100 millions/100 g
CEC of vermiculite - 100-200 millions/100 g
CEC of montmorilonite is
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Solution
CEC of different clays
CEC represent-the total cation absorbing capacity of soil.
CEC of humus - 100-300 millions/100 g
CEC of chlorite - 20-40 millions/100 g
CEC of illite - 20-40 millions/100 g
CEe of montmorillonite - 60-100 millions/100 g
CEC of vermiculite - 100-200 millions/100 g
Chlorite are basically silicates of
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Solution
Chlorite Chlorites are basically ferro-magnesium silicates with some aluminium present.
=> Chlorite have an extra layer of Mg dominated alumina sheet say brucite,
=> It is 2 : 2 type mineral.
Soils high in swelling clays which crack widely upon drying resulting in shrinking, shearing and soil mass movement are characteristics of