The document discusses land suitability classification according to the FAO, which involves assessing land for specified uses and comparing benefits with needed inputs for sustained use without degradation. The classification system includes four categories - orders, classes, subclasses, and units - which respectively reflect the kind of suitability, degree of suitability, limitations or improvements required, and minor management differences. Land is then rated as either suitable, unsuitable, or permanently unsuitable according to this classification system.
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
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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
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describes the irrigation and irrigation requirements of different crops. this ppt also describes about different methods to measure the soil moisture availability.
GIS and Remote Sensing in Diagnosis and Management of Problem Soil with audio...KaminiKumari13
GIS and Remote Sensing in Diagnosis and Management of Problem Soil for agriculture, soil science, agronomy, forestry, land management and planning with audio by Dr. Kamini Roy
The Contingency plans cover contingency strategies to be taken up by farmers in response to major weather related aberrations such as delay in onset and breaks in monsoon causing early, mid and late season droughts, floods, unusual rains, extreme weather events such as heat wave, cold wave, frost, hailstorm and cyclone.
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Enroll. No. (160111017)
Department of Agronomy
M.Sc. (Ag) Agronomy 2nd semester
Universal soil loss equation, soil loss estimation, factors of USLE, its use and limitation, soil loss measurement by multi slot divisor and coshocton wheel sampler
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http://sandymillin.wordpress.com/iateflwebinar2024
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1. Land Suitability Classification
Presented By :
Dr. R.K. Thakur
Assistant Professor (Soil Science)
College of Agriculture, Balaghat
Jawaharlal Nehru Krishi Vishwa Vidyalaya Jabalpur (M.P.)
2. ◼ The terms suitability and capability have often been
confused or even regarded as synonymous.
◼ There is a distinction between suitability for a single
clearly defined, reasonably homogenous purpose is
practices, and capability for a broader use such as
agriculture development.
◼ Thus, suitability assessment has a sharp focus, looking
for sites possessing the positive features associated with
successful production or use.
◼ Suitability is largely a matter of producing high yields
with relatively low inputs.
Introduction :-
3. ▪ According to the United Nations Food and Agriculture
Organization—FAO (1976) Land suitability is the fitness of a
given area for a land utilization type (or land use), or the
degree to which it satisfies the land user.
▪ It is generally presented as a class or rating.
▪ Internationally recognized suitability classes outlined by FAO
can be adapted and applied at both regional and local scale.
▪ Thus, land suitability classification system has four different
categories :
1. Orders
2. Classes
3. Subclasses
4. Units
Land Suitability Classification (LSC) :-
4. Basic Principles of Land Suitability :-
▪ It is assessed for specified kinds of use.
▪ Evaluation requires a comparison of benefit obtained with
inputs needed.
▪ Suitability is for use on a sustained basis, i.e. the use must
not bring about severe or progressive degradation.
▪ Land suitability orders, which reflect kinds of suitability.
▪ Land suitability classes, which reflect degrees of suitability
within orders.
▪ Land suitability sub-classes, which reflect kinds of
limitation or the main kinds of improvements required
within classes.
▪ Land suitability units, which reflect minor differences
within sub-classes in the required management.
5. 1. “S” - Suitable land : Land on which sustained use for the
defined purpose in the defined manner is expected to
yield benefits that will justify required recurrent
inputs without unacceptable risk to land resources.
2. “N” - Unsuitable land : Land having characteristics
which appear to preclude its sustained use for the
defined purpose in the defined manner or which would
create production, upkeep and/or conservation
problems requiring a level of recurrent inputs
unacceptable at the time of interpretation.
Land Suitability Orders :-
6. ▪ The class will be indicated by an Arabic number in
sequence of decreasing suitability within the order and
therefore reflects degrees of suitability within the
orders.
▪ It has been recommended to use only three classes
within order “S” and two classes within order “N”.
Land Suitability Classes :-
7. Land Suitability Classes :-
Suitability Classes Description
S1 : Highly suitable
▪ Land having no significant limitations to
sustained application for a given land use
or only minor limitations.
S2 : Moderately suitable
▪ Land having limitations which in aggregate
are moderately severe for sustained
application of a given land use.
S3 : Marginally suitable
▪ Land having limitations which in aggregate
are severe for sustained application of a
given use.
N1 : Currently unsuitable
▪ Limitations are so severe as to preclude
successful sustained use of the land in the
given manner.
N2 : Permanently unsuitable
▪ Land having limitations, which appear so
severe as to, preclude any possibilities of
successful sustained use of the land in the
given manner.
8. ▪ The sub classes reflect kinds of limitations or main
kinds of improvement measures required within
classes.
▪ They are indicated in the symbol using lower case
letters :
Land Suitability Sub-Classes :-
c : Climatic conditions
t : Topographic limitations
w : Wetness limitations
n : Salinity(and/or alkalinity) limitations
f : Soil fertility limitations
s : Physical soil limitations
9. ▪ Land suitability units are used at the farm planning
level, since differ from each other on ‘production
characteristics’ or in minor aspects of their management
requirements.
▪ Land suitability units can be created in the numbers
deemed necessary.
▪ This can indicate the relative importance of land
development works.
▪ It is indicated by Arabic numerals, enclosed in
parenthesis, following the subclass symbol.
Land Suitability Unit :-