This document summarizes different types of problematic soils, including their causes and solutions. There are two main types - chemical soils like acidic, saline, sodic, and alkaline soils which form due to chemical imbalances, and physical soils with issues like hard pans, waterlogging, and dispersion. Solutions include adding lime to acidic soil, leaching salts from saline soil, changing plant varieties for sodic soil, and installing drainage for waterlogged soils. The document provides details on the characteristics and remediation approaches for each problematic soil type.
Introduction
enlist of problematic soil
Salt affected soil
Characteristic of salt affected soil
Comparison between salt affected soil
Reclamation of Saline soils
Reclamation of sodic soils
Reclamation of saline-sodic soils
Acidic soils
Reclamation of acidic soil
Acid Sulphate soils and its management
Calcareous soil
QUALITY OF IRRIGATION WATER AND MANAGEMENT OF SALINE WATER FOR IRRIGATION
GOVARDHAN LODHA
Enroll. No. (160111017)
Department of Agronomy
M.Sc. (Ag) Agronomy 2nd semester
Introduction
enlist of problematic soil
Salt affected soil
Characteristic of salt affected soil
Comparison between salt affected soil
Reclamation of Saline soils
Reclamation of sodic soils
Reclamation of saline-sodic soils
Acidic soils
Reclamation of acidic soil
Acid Sulphate soils and its management
Calcareous soil
QUALITY OF IRRIGATION WATER AND MANAGEMENT OF SALINE WATER FOR IRRIGATION
GOVARDHAN LODHA
Enroll. No. (160111017)
Department of Agronomy
M.Sc. (Ag) Agronomy 2nd semester
Soil moisture characteristic curve is the relationship between the water content and the soil water potential, ψ.
It describes the functional relationship between soil water content and its energy status in terms of its matric potential under equilibrium conditions.
This curve is characteristic for different types of soil.
It is also called the Water retention curve
Soil water movement
Soil water movement
Soil water movement
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Tillage is the manipulation of soil with tools & implements for loosening the surface crust & bringing about conditions favorable for the germination of seeds and the growth of crops.
soil condition resulting from tillage
good Tilth - soft, friable & properly aerated
crop emergence, establishment, growth and development
easy infiltration of water & are retentive of moisture for satisfactory growth of plants
To prepare the seed bed to a satisfactory level which promotes good germination and establishment of the seedlings
To control weeds and improve close plant-soil interaction in the rooting zone.
To loosen the soil for easy penetration and proliferation
To remove the other sprouting materials in the soil
To modify the soil temperature
To break hard soil pans and improve drainage facilities
To manage the plant residues by incorporating into the soil or to retain on the top layer to reduce erosion.
To improve the physical conditions of the soil
To harvest rain water easily and soil erosion can be minimised.
To establish specific surface configurations for sowing, irrigation, drainage, etc.
To incorporate and mix applied fertilizers and manures into the soil.
To destroy the eggs and larvae of insects and their breeding places.
describes the irrigation and irrigation requirements of different crops. this ppt also describes about different methods to measure the soil moisture availability.
introduction about acidic soil and area distribution ,classification of acidic soil and source of acidic soil formation , characteristic of acid soil ,what are the impact on soil properties . Reclamation of acid soil , conclusion about acidic soil
Soil is the home of million of organisms. In agriculture, from seed to grain, soil is a prima factor. It also acts a medium to store water for plants and form of water in soil called soil moisture. Some parameters to check the soil moisture called soil moisture constants. So, soil and water relationship is essential in agriculture.
Soil moisture characteristic curve is the relationship between the water content and the soil water potential, ψ.
It describes the functional relationship between soil water content and its energy status in terms of its matric potential under equilibrium conditions.
This curve is characteristic for different types of soil.
It is also called the Water retention curve
Soil water movement
Soil water movement
Soil water movement
Soil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movementSoil water movement
Tillage is the manipulation of soil with tools & implements for loosening the surface crust & bringing about conditions favorable for the germination of seeds and the growth of crops.
soil condition resulting from tillage
good Tilth - soft, friable & properly aerated
crop emergence, establishment, growth and development
easy infiltration of water & are retentive of moisture for satisfactory growth of plants
To prepare the seed bed to a satisfactory level which promotes good germination and establishment of the seedlings
To control weeds and improve close plant-soil interaction in the rooting zone.
To loosen the soil for easy penetration and proliferation
To remove the other sprouting materials in the soil
To modify the soil temperature
To break hard soil pans and improve drainage facilities
To manage the plant residues by incorporating into the soil or to retain on the top layer to reduce erosion.
To improve the physical conditions of the soil
To harvest rain water easily and soil erosion can be minimised.
To establish specific surface configurations for sowing, irrigation, drainage, etc.
To incorporate and mix applied fertilizers and manures into the soil.
To destroy the eggs and larvae of insects and their breeding places.
describes the irrigation and irrigation requirements of different crops. this ppt also describes about different methods to measure the soil moisture availability.
introduction about acidic soil and area distribution ,classification of acidic soil and source of acidic soil formation , characteristic of acid soil ,what are the impact on soil properties . Reclamation of acid soil , conclusion about acidic soil
Soil is the home of million of organisms. In agriculture, from seed to grain, soil is a prima factor. It also acts a medium to store water for plants and form of water in soil called soil moisture. Some parameters to check the soil moisture called soil moisture constants. So, soil and water relationship is essential in agriculture.
Presentation by Steve Diver from the 2012 Resilient Farmer Workshop at the Kerr Center's Cannon Horticulture Plots in Poteau, Oklahoma. Cover crops, soil organic matter, soil food web
The soils that causes additional problems from agricultural and engineering point of view as a result of circumstances of its compositions and change in environmental conditions.
Waterlogging Types & Causes of Waterlogging Effects & its control Salinity Ef...Denish Jangid
waterlogging with figures water resource engineering by DJ sir unit 4 WRE
Water logging, effects & its control salinity, effects & its control water logging types & causes of waterlogging
Effects of waterlogging on plant growth causes of salinity effects of salinity measures to control salinity preventive measures curative measures
How to Prevention of water logging.
Water Logging: Causes, preventive and curative measures, drainage of
irrigated lands, saline and alkaline lands, types of channels lining and design
of lined channel.
This is an introductory soil science presentation that I give to Master Gardeners, agribusiness personnel, farmers, and soil science students. Please feel free to contact me at andykleinschmidt@gmail.com with any comments regarding the presentation.
Alkaline Soils
Clay soils with a pH of more than 8.5 are classified as alkaline soils. The higher pH is caused by high quantities of salt, magnesium, and calcium. Furthermore, hard water can cause the pH of soils to rise to alkaline proportions. On the other hand, sodium carbonate is the dominant component in alkaline soil. Therefore, alkaline soils inflate when exposed to sodium carbonate.
Saline Soils
When there is an overabundance of sodium ions in the clay and soil complex that still includes exchangeable calcium, the soil is referred to as saline soil, brown alkali soil, or white alkali soil. This soil continues to be flocculated or granulated. As a result, it has air and water permeability.
Agriculture on Saline and Alkaline Soils
Coconut trees may be found in abundance in coastal settings. In addition, as previously stated, farming salt-tolerant crops such as dhaincha, berseem, and other grain legume crops may aid in the reclamation of these soils. Moreover, some of the suitable agriculture on saline-alkaline soil is mentioned below:
Suitable Crops: Barley, Cotton, Sugar beet, Sugarcane, Rice, Mustard, Maize, Green Gram, Red Gram, Sunflower, Sesame, Linseed, Sorghum, Bajra, etc.
Suitable Vegetables: Tomato, Cauliflower, Cabbage, Cucumber, Bitter guard, Pumpkin, Spinach, etc.
Suitable Fruits: Guava, Beetroot, Asparagus, Coconut, Banana, Grape, Pomegranate, Date palm, etc.
Features of Saline and Alkaline Soils
The topsoil of Saline and Alkaline Soil is permeated (saturated or soaked with a material) with alkaline and saline efflorescences.
Weathering produces calcium salts, magnesium, sodium, and sulfurous acid from inert rock pieces.
In areas with a lower water table, salts permeate the subsurface, but in areas with high drainage, salts are washed away by running water.
Certain salts are delivered in suspension by rivers.
In places with a higher subsoil surface water, harmful salts are carried below by capillary forces during the summer months due to evaporation.
Water with a high salt content becomes stationary in places with inadequate drainage and accumulates all of the salt contents in the soil layer as it dissipates.
Alkaline and Saline Soil Areas in India
Saline and Alkaline Soil covers an area of 68,000 square kilometers. These soils are formed in canal rinsed lands and locations with a higher subsurface water table. This type of soil may be found in parts of Karnataka, Telangana, Andhra Pradesh, Uttar Pradesh, Bihar, Punjab, Haryana, Rajasthan, Punjab, and Maharashtra. However, the build-up of the salts leaves the soil unproductive and unsuited for cultivation.
The sea tides transporting salt-laden sediments damage the lands near the Khambhat Gulf of Gujarat. As a result, vast portions of the Mahi, Tapi, Narmada, and Sabarmati rivers are unproductive. When severe storms, salty sea waves invade coastal locations, rendering the soil unsuitable for farming.
2. Contents
Definition
Types (chemically)
Acidic
Saline
Sodic
Alkaline
Causes
Solution
Types (Physically)
Fluffy paddy soil
Sandy soil
Hard pan soil
Water logging and seeping
References
3. problematic soil
The soil that causes additional problems
from the engineering point of view as a
result of the circumstances of its
composition or a change in environmental
conditions.
5. The soil having PH less than 7 is called acidic soil
Extremely acidic soil has PH between 4-4.75
Causes of Acidic Soil?
There are three basic things (PNK) that cause
acidic soil. The first, and most common, is simply
that the organic matter and minerals that break
down in a soil over time are acidic in nature, and
make the soil acidic. This is common in pine
forests and peat bogs.
Acid rain also becomes a cause of acid soil
6. Acid Soil
Solution
Adding pulverized limestone or dolomite limestone
(which has magnesium in addition to the calcium
carbonate that makes up regular lime) is one of the
fastest ways to increase your soil's pH. You'll
generally want to look for something called "garden
lime" or the above-mentioned "dolomite limestone"
for your garden.
8. The soil with excess salt (NaCl) is called saline
soil
Salt Sources
These salts originate from the natural weathering
of minerals or from fossil salt deposits left from
ancient sea beds.
Saline soil problems
It is caused by the accumulation of soluble salts in
the root zone. These excess salts reduce plant
growth by altering water uptake and causing
imbalances
9.
10. Saline Soil
Solution
There are two ways to manage saline soils:
First, salts can be moved below the root zone by
applying more water than the plant needs. This
method is called the leaching
requirement method.
Second, salts can be moved away from the root
zone to locations in the soil, other than below the
root zone, where they are not harmful.
11. Sodic soil
Soils with high levels of exchangeable sodium (Na)
and low levels of total salts are called Sodic soils
Causes:
Sodic soils may impact plant growth by:
1.) Specific toxicity to sodium sensitive plants
2.) Nutrient deficiencies or imbalances
3.) High pH
12. Sodic Soil
Solution
There are usually three options for
correcting soil-related problems:
change the plant species to a more
tolerant species
change the variety to a more tolerant
variety
change the soil.
14. Alkalisoil
Alkali, or alkaline, soils are clay soils with high pH, a poor
soil structure and a low infiltration capacity. Often they
have a hard calcareous layer at 0.5 to 1 meter depth.
Causes:
The causes of soil alkalinity are natural or they can be
man-made
natural cause is the presence of soil minerals
producing sodium carbonate (Na2CO3) and sodium
bicarbonate (NaHCO3) upon weathering
no other source of man made sodium salts addition to
the agriculture fields
15. Alkali soil
Solution:
Alkaline soils with solid CaCO3 can be
reclaimed with grass cultures, organic
compost, waste hair and feathers, organic
garbage, etc. ensuring the incorporation of
much acidifying material (inorganic or organic
material) into the soil, and enhancing
dissolved Ca in the field water by releasing
CO2 gas. Deep plowing and incorporating the
calcareous subsoil into the top soil also helps
17. They are characterised by low bulk density
of the topsoil resulting in the sinking of
farm animals and labourers as well as
poor anchorage to paddy seedlings.
Such soils can be reclaimed by, passing of
400 kg stone roller.
20. The size of the particles
are the largest. It is
granular and consists of
rock and mineral
particles that are very
small. The texture is
coarse.. Sandy soil is
composed of 60-70%
sand, 20-25% silt and
10-15% clay.
21. Hard pan occurs in red soil areas below 15 cm
depth due to the movement of clay and iron
hydroxides and settling at shallow depth,
preventing the root proliferation.
These soils can be reclaimed by
Chiselling the soils with chisel plough at 0.5 m
interval first in one direction and then in the
direction perpendicular to the previous one, once
in three years.
23. The soils are weakly aggregated soil structure are easily
broken by the impact of rain drops resulting in the
formation of clay crust at the soil surface.
The clay pan prevent the emerging seedlings and arrest
the free exchange of gasses between the soil and
atmosphere
25. soft clay soil
soft clay soil Defined as saturated clay soils that
have low values of shear strength and
coefficient of textures also have high values for
compression and secondary compression and
creep behavior.
26. collapsible soil
A soil which is possible
to bear high stress value
low settlement. In case
that soil exposed to high
amount of moisture they
quickly collapse and a
high settlement occur.
27. Swelling soil
Swelling soil Is the soil that gives a significant increase
in size when absorbed water as it gives high shrinkage
ratio at the exit of the water. The swelling ratio
depends on increasing dry density and increase the
percentage of clay
28. DISPERSIVE SOILS
Dispersion can occur in any given soil with a high
percentage of exchangeable sodium percentage
(ESP), causing internal erosion and eventually piping
through embankment dams.
29.
30. Water logging refers to the saturation of soil
with water. Soil may be regarded as water
logged when the water table of the
groundwater is too high to conveniently
permit an anticipated activity, like agriculture.
Water Logging
31. Causes Of Water Logging
(3)-Impervious
Obstruction.
(4)-Inadequate
Drainage.
(5)-Impervious Soil
(6)-Flat country
Slope
33. Prevention Of Water Logging
There are many following steps to control
the water logging:
Canal Closures
Lowering Full Supply Level
Lining Of Canals and water courses
Provision Of Intercepting Drains
Provision Of Surface Drains
Pumping
Plantation
Crop Rotation