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SOIL MOISTURE
CONSERVATION
TECHNIQUES
Ihtisham Ali (328)
INTRODUCTION
To increase the moisture availability to the
agricultural crops, it is necessary to adopt in-
situ moisture conservation techniques in
addition to the large scale soil and moisture
conservation and water harvesting structures
in the watershed.
The principle behind the recommendation of
different practices is to increase the infiltration by
reducing the rate of runoff, temporarily
Impounding the water on the surface of the soil to
increase the opportunity time for infiltration and
modifying the land configuration for inter plot
water harvesting.
Earlier efforts for moisture conservation were
concentrated upon construction of various
types of bunds across the land slope to control
erosion and conserve soil.
All the erosion control measures however, led to
accumulation of water against the structures
rather than its proper and uniform distribution in
the interterraced area and at times led to
reduction in crop yields.
To overcome these problems the insitu
moisture conservation techniques are
recommended.
Generally, the sub soiling and deep digging
decreases the soil penetration resistance and
increases profile water use when compared with
conventional tillage.
In-situ moisture conservation
methods
To increase the moisture availability to the
agricultural crops in the individual farmer’s field
and to increase the infiltration and percolation of
rain water into the root profile, the in-situ
moisture conservation techniques are
recommended.
i) Deep tillage: Deep tillage means performing
tillage operations below the normal tillage depth to
modify the physical or chemical properties of a soil.
It includes tillage operations commonly referred to
as deep plowing, subsoiling, ripping, or row-till,
which are carried out on an as-needed basis.
ii) Mulching: Mulching is one of the simplest
methods to conserve soil moisture.A Mulch is
simply a proyective layer of a material that is
spread on top of a soil.Mulches can either be
organic- such as straw bark chips etc.or
inorganic like stones brick chips plastic.
The process is used both in commercial crop
production and in gardening, and when
applied correctly can dramatically improve
soil productivity.
Advantages of mulching
Protects from soil erosion
Reduces compaction from the impact of heavy
rains
Prevents moisture loss
Maintains a more even soil temperature.
iii) Basin listing: in this method of soil and
water conservations basins are constructed
using a special implement called basin
lister.These basin are constructed across the
slope. Basin listing provides maximum time to
rain water for infiltration into soil
iv) Broad based bed and furrows:
This system helps the soil to preserve the water
level for a longer period. Holding the moisture
intact, the bed stimulates crops growth. This
system not only help in water conservation but
also help to adopt to changing climate.
v) Ridges and furrows:
It is an archeological pattern of ridges and troughs
created by a system of ploughing used in Europe during
the middle age, typical of the open field system.
vi) Compartmental bunding:
It means the entire field is divided into small
compartments with pre determined size to retain
the rain water where it falls and arrest soil
erosion. The compartmental bunds are formed
using bund former. The size of the bunds depends
upon the slope of the land compartmental bunds
provide more opportunity time for water to
infiltrate into the soil and help in conserving soil
moisture.
Advantages of compartmental
bunding
Conserves moisture
Suitable for lesser rainfall areas
Reduces the formation of cracks
It can be formed while ploughing itself or
before early sowing.
THANK YOU

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Presentation 1

  • 2. INTRODUCTION To increase the moisture availability to the agricultural crops, it is necessary to adopt in- situ moisture conservation techniques in addition to the large scale soil and moisture conservation and water harvesting structures in the watershed.
  • 3. The principle behind the recommendation of different practices is to increase the infiltration by reducing the rate of runoff, temporarily Impounding the water on the surface of the soil to increase the opportunity time for infiltration and modifying the land configuration for inter plot water harvesting.
  • 4. Earlier efforts for moisture conservation were concentrated upon construction of various types of bunds across the land slope to control erosion and conserve soil. All the erosion control measures however, led to accumulation of water against the structures rather than its proper and uniform distribution in the interterraced area and at times led to reduction in crop yields.
  • 5. To overcome these problems the insitu moisture conservation techniques are recommended. Generally, the sub soiling and deep digging decreases the soil penetration resistance and increases profile water use when compared with conventional tillage.
  • 6. In-situ moisture conservation methods To increase the moisture availability to the agricultural crops in the individual farmer’s field and to increase the infiltration and percolation of rain water into the root profile, the in-situ moisture conservation techniques are recommended.
  • 7. i) Deep tillage: Deep tillage means performing tillage operations below the normal tillage depth to modify the physical or chemical properties of a soil. It includes tillage operations commonly referred to as deep plowing, subsoiling, ripping, or row-till, which are carried out on an as-needed basis.
  • 8. ii) Mulching: Mulching is one of the simplest methods to conserve soil moisture.A Mulch is simply a proyective layer of a material that is spread on top of a soil.Mulches can either be organic- such as straw bark chips etc.or inorganic like stones brick chips plastic. The process is used both in commercial crop production and in gardening, and when applied correctly can dramatically improve soil productivity.
  • 9. Advantages of mulching Protects from soil erosion Reduces compaction from the impact of heavy rains Prevents moisture loss Maintains a more even soil temperature.
  • 10. iii) Basin listing: in this method of soil and water conservations basins are constructed using a special implement called basin lister.These basin are constructed across the slope. Basin listing provides maximum time to rain water for infiltration into soil
  • 11. iv) Broad based bed and furrows: This system helps the soil to preserve the water level for a longer period. Holding the moisture intact, the bed stimulates crops growth. This system not only help in water conservation but also help to adopt to changing climate.
  • 12. v) Ridges and furrows: It is an archeological pattern of ridges and troughs created by a system of ploughing used in Europe during the middle age, typical of the open field system.
  • 13. vi) Compartmental bunding: It means the entire field is divided into small compartments with pre determined size to retain the rain water where it falls and arrest soil erosion. The compartmental bunds are formed using bund former. The size of the bunds depends upon the slope of the land compartmental bunds provide more opportunity time for water to infiltrate into the soil and help in conserving soil moisture.
  • 14. Advantages of compartmental bunding Conserves moisture Suitable for lesser rainfall areas Reduces the formation of cracks It can be formed while ploughing itself or before early sowing.