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Soil
is our prime natural and economic resource because we derive
everything that we need in our life from it. The word
"Soil" originated from the Latin word "Solum"
which means 'Floor'. The soil is a natural body of mineral and
organic materials differentiated into horizons which differ among
themselves as well as from the underlying material in morphology,
physical make-up, chemical composition and biological
characteristics.
There
are many different classifications of soils of Punjab by different
sources. The layman does not easily understand the soil taxonomy
classification. What fallows is the simple texture based soil
classification on the basis of texture, climate, topography and
denudation process. The soils of Punjab have been classified into
the following major types:
Flood
Plain or Bet Soils
These
are the Khadar soils of the periodically flooded or old flood
plain areas of various rivers, streams or choes of the state. They
are found in the form of elongated belts on the both side of the
river channel such as those of Satluj, Ravi, Beas and Ghagghar. They
are pale to yellowish brown in colour. The soils are wel drained an
dvery deep and they vary in texture and these have generally a low
and irregular organic matter. Depending upon the source of alluvium,
the soils are either Calcareous or non- calcareous. There is
a wide belt of more mature bet soils of old flood plain
extending along the west bank of river Satluj from Ropar towm to
Fazilka town in the south west.
These soils are called Ustifluvent or Udi or Torripsamments
in Taxonomy Classification. These soils are suitable for the
cultivation of paddy, wheat, sugarcane and vegetables.
Loamy
Soils
It
is the most important, fertile and productive soil group of the
state.
It
is the predominant soil especially of Nawashehar District, larger
parts of Nakoder tehsil of Jalandhar district,Phagwara and central
parts of Kapurthala district. In malwa plain, loamy Soils have a
large
Source
: Deptt. of Soil Science, PAU
(for large view click on image)
coverage
in western patiala tehsil, Nabha area, Sangrur area, southerm Moga
district, some patches in mukatsar area and Bathinda district. These
soils cover nearly 25% area of the state. In Taxonomy classification
these are Ustochrepts of Ustic zone of Punjab. The soils become
clayey towards northwest in Amritsar and Gurdaspur districts. These
are deep and fine grained soils, which have developed under sub-
moist and cool to warm temperate climate. The PH value decreasing
nears the surface from 8.0 to 7.8 in the B-horizon.
Due to flooding by choes or riverlets and excessive
irrigation the soils become partly salt affected or sodic in western
Amritsar district, southwestern Batala tehsil of Gurdaspur district.
Thes esoils are intensively cultivated for wheat and paddy crops.
Sandy
Soils
These
are arid soils of south-western and souhth central Punjab covering
the districts of
Bathinda, Mansa, southern parts of Firrozpur and Mukutsar districts,
larger parts of Sangrur , south -central parts of Patiala district
and some patces of Ludhiana district. These soils have developed
under semi arid & warm to hot climatic conditions with rainfall
ranging from 30cm to 50cm. The soils are yellowish to grey colour,
the over all grey colure reflects the deficiency of
organic matter. Th esoil is poor in nitrogen, phosphorus and
potash. The pH value ranges from 7.8 to 8.5.the soils are sandy loam
to silt in mixture. They are dry and are called Calciorthids in
Taxonomy Classification. They have low to medium fertility but by
artifical irrigation they become much more productive and are
capable of producing cotton, citrus, oilseeds, wheat and fodder
crops.
Desert
Soils
These
Soils belong to the aridic zone spreading over south -western
parts of the state in Abohar tehsil and zira area of Firozpur
district, Mukatsar district, large parts of Bathinda and Mansa
district an some patches in Sangrur and Ludhiana district. These
soils cover more than 11% of the total area of the state. These
soils have developed under arid and hot climate and thin cover or
bush vegetation. The average rainfall is upto 30 cm. This soil is
dry and deficient in
humas. It is poor in nitrogen, phosphorus and potassium. The
reaction is from normal to alkaline and pH value ranges from 7.5 to
8.5. the fertility with respect to plant nutrient is LMM( low to
medium). In th south -western aridic zone wind action has played a
major role in the formation of these soils. The are is sand dune
studded. The soils are covered by wind blown sand. The soils are
light in colour from yellow to light brown. These soils are suitable
for the cultivation of cotton, moth, citrus tress, wheat , Bajra and
other kharif fodder. The soils suffer from wind erosion especially
in the summers.
Kandi
Soils
These
type of soils are found in the areas of Pathankot tehsil of
Gurdaspur, larger parts of Hoshiarpur, Nawashehar and Ropar
districts. Th esoils have a sandy, sandy loam, silt loam and clay-
slt to gravelly texture. The texture becomes coarser and rougher
eastward the shivaliks hills where gravel, pebbles and conglomerates
predominates. These have been deposited by numerous choes coming
from shivaliks hills. The soils are badly eroded and less productive
and are suitable from dry farming.
Sierozems
These
soils cover nearly 25% area of the state. Sierozems are grey soils
of semi arid parts of Punjab with an average annual rainfall from
50cm to 70cm, the general air temperature ranges from 24°
C to 25°
C
and
have grass and deciduous vegetation. These soils are found in
eastern half of the malwa plain in Ludhiana districts, northern and
central parts of Sangrur district, Fatehgarh Sahib district, Rajpura
and Patiala district, western parts of Patiala district and some
inter dunal areas of
Faridkot districts. In Doaba and Majha region this soils cover cover
is found in th eform of a long belt extending from Mukerian in north
through Tanda, Jalandharm adampur, nakodar blocks in the south. The
soil cover also extens over the
westermn parts of Kapurthala districts and tarn taran and
Patti tehsils of Amritsar districts.
The
soils are overall grey colour which indicates its deficiency in
organic matter. Nitrogen and Potash are not sufficient. pH value
ranges between 7.8 to 8.5. The soils are known as Camborthids or
calciorthids in south-western Punjab and Ustochrepts in central
Punjab in Taxonomy Classification of soils of Punjab.Thes esoils
produce highest yield of wheat under irrigation. Paddy cultivation
has been Introduced in
these soils. Excessive irrigation
has resulted in some form of salinity.
Grey-
Brown Podzolic & Forest Soils
These
are the shivalik stony, gravelly and sandy soils of some blocks of
Gurdaspur districts and shivilk hill zone of Hoshiarpur, nawashehar
and Ropar districts. These soils
have develop under shrub and deciduous forests, steep slopes
and rugged topography, much water erosion and less hot temperature
conditions. These soils are reddish brown to olive brown in colour.
Sodic
and Saline Soils
On
account of climate and topography and also due to human activities
and mismanagement, soils suffer from various kinds and degree of
degradation, particularly salinity and sodicity. Salinity is the
presence of high content of soluble salts( more than 0.2 percent )
which make it difficult for the plants to absorb water from saline
soils. The salt moves up and down in the soil alongwith soil water.
The pH values are generally 7.3 to 8.5 and the soil is neutral in
reaction. Sodic soils have a higher percentage of sodium ( more than
15 %) salt an high pH value above 8.5 and strong alkaline reaction.
Ther are large tracts of slightly to moderately saline/sodic soil in
malwa plain due to aridity and depression like lower postion of
Fazilka, jalalabad, Guru harsahai, talwandi
Bhai in Firozpur district,northern parts of Faridkot and
Mukatsar districts, eastern parts
of Mansa district, Govindgarh Khokhar area of Sangrur
district and Samana. All these areas of saline/sodic soils lies
along or across Bikaner canal, Abohar, Bathinda, Ghagghar and Kotla
branches of sirhind canal and Bhakra canal in these areas.
Saline
soils of south-western punjab are of recent origin resulting from
surface flooding and or rise in the ground water. During summer
period of excessive evaporation, salts accumulates at the surface.
Lower terraces, along river Ravi, in Amritsar and Gurdaspur
districts and along river Satluj in Nakodar and sultanpur tehsil and
south western parts of Kapurthala have uncultivated moderately to
severly sodic and saline soils which are water logged Pockets. They
have Aquic horizne.
(Source:
Geography of Punjab By Manku,
D.S)
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