About information of land capability classification

1. Topic
LAND CAIPIBILITY CLASSIFICATION
Shriman Kumar Patel
BAC/D/SSAC/001/2018-19
SOIL SCIENCE AND AGRICULTURAL CHEMISTRY
BIHAR AGRICULTURAL UNIVERSITY, SABOUR

2. CONTENTS
Introduction
Why Land capability classification
Factor influencing land capability classification
Category of LCC
LCC sub class
Four aspects of LCC

3. Introduction
• Soil – Soil is porous, powdery and unconsolidated outer
layer of the earth s crust which is formed by weathering of
mineral and decomposition of organic substances. Soil is
dynamic, three dimensional ( having length, breadth and
depth) piece of landscape with a three phase ( solid ,liquid
and gaseous) system.
• Land – Land is two dimensional.
• Landscape- Landscape is three dimensional.

4. Why Land Capability classification
• Why Land Capability classification - The first requisite to
conservation of land is to fit the crop to the capabilities of the soil and
water availability. Lands are mainly use for agriculture, pastures and
forestry. The capability of land to grow crops depends on the nature
and properties of soils.
• LCC forms the basis of all the watershed programmers. It was
developed by the USDA ( United State Department of Agriculture)
• LCC is based upon the degree or magnitude of problem/hazard
recognized in the land.

5. Land Capability classification
• Land suitable for agriculture – I ,II , III and IV
• Land not suitable for agriculture – V , VI, VII and VIII

6. Factor influencing the land capability
classification
• Soil profile characteristics- Soil texture, effective soil depth,
permeability and internal drainage, availability of nutrients, soil
salinity, soil alkalinity and soil toxicity.
• External feature of the land - Water logging, slope and erosion are
the factors that determined land capability and limit the land for
particular use only.
• Climate factors- Rainfall, temperature and wind velocity are
important components that determine land capability class.

7. Classification of LCC
• It is classified into two groups-
• Arable groups- In arable land frequent disturbance of soil colour e.g.-
Crop field.
• Non – arable land – Forest and plantation are the example of non
arable land.

8. Arable land
• Class I
Best suitable for all agricultural crop and free from hazards.
Deep soil depth and high fertility.
Not affected by any appreciable erosion, wetness, salinity etc.

9. • CLASS II
These lands have moderate soil depth, light or heavy texture, gentle
slope and moderate soil fertility etc.
Suitable for permanent cultivation with some soil and water
conservation practices.

10. • CLASS III
Various conservation measures like contour bonding, graded bunding
etc. are recommended.
These lands are suitable for plants, provided that the plant cover
should be maintained.

11. • CLASS IV
Suitable only for occasional or limited cultivation because of
unfavorable soil characteristics, slope, erosion, depth, drainage,
adverse climate etc.
Engineering measures are recommended here.

12. NON- ARABLE LAND
• CLASS V
• These lands have the potential to become class I, but to particular
problem/hazard, they can not fulfil the characteristics of class I.

13. • CLASS VI
These lands are suitable for horticultural crops like mango, coffee
guava, cash nut, etc.
Grazing should be regulated to preserve the plant cover.

14. • CLASS VII
These lands have severe limitation to use for grazing or forestry.
Generally lands are droughty and swampy, having very steep slope,
rough, stony or very severely eroded, infested with gullies.

15. • CLASS VIII
• Lands are very rough, not suitable for wood land or grazing.

16. FIVE ASPECTS OF LCC

17. Soil Texture
Sl. No Texture class LCC
1. Sandy IV
2. Loamy sandy II
3. Sandy loam I
4. Loam I
5. Silty loam I
6. Silty I
7. Sandy clay loam I
8. Silty clay loam I
9. Clay loam I
10 Sandy clay II
11. Silty clay II
12. Clay III

18. Soil Depth
Sl. No. Soil depth (cm) LCC
1. >90 I
2. 45-90 II
3. 22.5-45 III
4. 7.5-22.5 IV
5. <7.5 VI, VII,VIII

19. Land Slope
Symbols Land slop (%) Class
A 0-1 I
B 1-3 II
C 3-5 II
D 5-10 III
E 10-15 III
F 15-25 IV
G 25-33 IV
H 33-50 VI
I 50-100 VII
J >100 VII

20. Erosion Status
Sl. No. Symbol Erosion status Class
1. e1 Sheet erosion I and II
2. e2 Rill erosion III
3. e3 Small erosion IV
4. e4 Big gully VI and VII

21. Soil Colour
Class Colour Class Colour
I Green V Dark green
II Yellow VI Orange
III Red VII Brown
IV Blue VIII Purple

22. LCC sub class
• The basis of class is to recognized the type of problem/hazard.
Erosion
Water logging
Soil limitation
Climate

23. Thank you