Advanced Irrigation and Precision Agriculture Training
1. Integrated Rural and Agricultural Development
Association (IRADA), Satara
Online Training on
“Advanced Irrigation and Precision Agriculture”
Primary Data Requirement for Irrigation and it's
Impact
by
Er. A. N. Gaupale
M. Tech. (Irrigation and Drainage Engineering)
2. Integrated Rural and Agricultural Development Association (IRADA), Satara
•
Advanced Irrigation and Precision Agriculture 2
WHAT IS IRRIGATION?
It is artificial application of water to fulfill crop water requirement
as per there demand
It is used for grow agricultural crops, maintain landscapes,
and revegetate disturbed soils in dry areas and during periods of less than
average rainfall.
3. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 3
Benefits of Irrigation
Increaser in crop yield
Protection from famine
Cultivation of superior crops
Elimination of mixed cropping
Economic development
Domestic and industrial water supply
4. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 4
PRIMARY FACTOR REQUIRED FOR IRRIGATION
Soil Soil Texture
Soil Structure
Physical properties
Water Sources Type of water sources
Quality of irrigation water
Topographical Data Slope
Contours
Agronomical Factor Type of Crop
Crop Spacing
Water Requirement
Crop Physiology
Climatological Factor Temperature
Humidity
Rainfall
Evaporation
5. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 5
SOIL
It is upper most weathered disintegrate layer of the earth
composed of several minerals and organic matters.
To an Agriculturist, it means loose material laying on earth’s
surface formed by disintegration of rocks, which can support
plant life.
To civil Engg., it means all the inorganic material on the
earth’s surface produced by weathering of rocks being either
residual or transported.
6. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 6
SOIL STRUCTURE
Soil structure is the arrangement of the
soil particles into aggregates of various
sizes and shapes.
Aggregates that occur naturally in the
soil are referred to as peds, while clumps
of soil caused by tillage are called clods.
7. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 7
TYPES OF SOILS
Alluvial Soil
Black Soil
Red Soil
Literate Soil
Mountain Soil
Desert Soil
8. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 8
SOIL TEXTURE
Soil texture is the fineness or
coarseness of a soil.
It describes the proportion of sand,
silt and clay.
9. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 9
PHYSICAL PROPERTIES
1. BULK DENSITY:
It is the weight of soil mass in a given volume of soil.
Bulk density increases with compaction and tends to increase
with depth.
Soil Type
Ideal Density For Root
Growth (g/Cm3 )
Above That Root Growth
Restrict (g/cm3 )
Sandy < 1.60 > 1.80
Silty
< 1.40
> 1.65
Clayey
< 1.10
> 1.47
10. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 10
2. HYDRAULIC CONDUCTIVITY(K)
It is a property of soils and rocks that describes the ease with which a
fluid (usually water) can move through pore spaces or fractures.
It depends on the intrinsic permeability, degree
of saturation, density and viscosity of the fluid.
11. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 11
3. WATER HOLDING CAPACITY
It is defined as the is amount of water that can be hold by given soil for crop
development.
These levels commonly are referred to as
1) Saturation
2) Field capacity
3) Wilting point
12. Integrated Rural and Agricultural Development Association (IRADA), Satara
• Surface water
• Lakes
• Ponds
• Streams
• Rivers
• Storage reservoirs
• Ground water
• Open wells
• Tube wells
• Artesian wells
• Infiltration galleries
Advanced Irrigation and Precision Agriculture 12
SOURCES OF WATER
13. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 13
Surface water
Surface water is water on the surface of the planet such as in a river, lake,
wetland or ocean.
It can be contrasted with ground water and atmospheric water.
Non –saline surface water is replenished by precipitation and by
recruitment from ground water .
It lost through evaporation, seepage, into the ground where it becomes
ground water.
It is used by plants for transpiration, mankind for agriculture, living
industry, etc or discharge to the sea where it becomes saline.
14. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 14
GROUND WATER
Ground water is the water present beneath the earth surface in soil
pore spaces and in the fractures of rock formation
Open wells
15. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 15
Tube Wells
Artesian Wells
Infiltration Galleries
16. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 16
TOPOGRAPHY
Topographic relief will affect the type of irrigation system, water
conveyance system (ditches or pipes), drainage requirements and water
erosion control practices.
■ Ground Slope
Slope is the incline or gradient of a surface and commonly is expressed in
percents.
Slope is important to soil formation & management because of its
influence on runoff, soil drainage, erosion, use of machinery and choice of
crops.
17. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 17
CONTOURS
A line on a map that joins points of equal height or depth, in a way
that shows high and low areas of land
An imaginary line on the ground
surface joining the points of equal
elevation is known as Contour
18. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 18
AGRONOMICAL FACTOR
Different crops need different type of soils, different types and amounts of
nutrients, and different types and amounts of water.
The amount of water required by the plant is also dependent on the growing
season and the climate where it is grown.
By selecting right crop for the given soil conditions and climate, one can optimise
yields and save water requirements for irrigation.
The crop water needs mainly depend on:
The crop type
The growth stage
The crop spacing
19. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 19
AGRONOMICAL FACTOR
Type of Crop
20. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 20
GROWING STAGE
21. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 21
CROP WATER REQUIREMENT
Q = A x B x C x D
Where,
Q = Water requirement per plant (lit/plant)
A = ETo = E pan x Kp (mm)
B = Crop coefficient (KC)
C = Canopy factor
D = Area allotted per plant (m2)
Epan = Cumulative evaporation for two days
Kp = Pan coefficient (0.8)
22. Integrated Rural and Agricultural Development Association (IRADA), Satara
CROP WATER REQUIREMENT
Advanced Irrigation and Precision Agriculture 22
23. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 23
CLIMATOLOGICAL FACTORS
Temperature
Humidity
Rainfall
Evapo transpiration
Wind Speed
24. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 24
SOILAND WATER TESTING
1) Why soil testing?
19 nutrients are required for crop growth out of these,
16 nutrients are important and 3 nutrients are needed for
specific crops
1) Natural Nutrients: Carbon, Hydrogen, Oxygen
2) Main nutrients: Nitrogen, Phosphorus and Potassium,
3) Secondary Nutrients: Calcium, Magnesium Sulphur
4) Micronutrients: Iron, Chlorine Zinc, Copper, Boron,
Molybdenum and Nickel
25. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 25
FROM WHERE SOIL SAMPLE
COLLECT ?
Soil sample should be taken when there
is no crop in the field, before sowing i.e.
immediately before application of manure
or after harvest.
Samples should not be taken within two
to two and half months if chemical
fertilizers are applied in the field.
As per Soil color, soil roughness,
sloping orchards, arable lands etc, field
divided into different parts.
26. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 26
FROM WHERE SOIL SAMPLE COLLECT ?
Living space, manure landfill, swampy area, near
house, farm dam etc. Space should be omitted.
If there is crop in the soil, sample should be taken from
the row of crops.
27. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 27
HOW SAMPLING DONE?
28. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 28
WATER TESTING?
29. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 29
WHAT PARAMETER SHOULD TESTED ?
SOIL TESTING
1.
Physical Parameter
(7 Days)
Bulk density,
particle Density,
Hydraulic conductivity,
water holding Capacity,
soil Moisture,
soil Texture
2.
Chemical Parameters
(3 Days)
pH, EC, OC, N, P, K, Ca, Ca+, Mg, Caco3, SO
3. Micro Nutrients
(2 Days)
Cu, Fe, Zn, Mn, Boron, Cadmium, Nickel
30. Integrated Rural and Agricultural Development Association (IRADA), Satara
WATER TESTING
1. Chemical Parameters
pH, EC, K, NA, Ca, Ca+, TDS, TSS,
Cl
2. Heavy metals
Cu, Fe, Zn, Mn, Boron, Lead,
Nickel, Cadmium
Advanced Irrigation and Precision Agriculture 30
31. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 31
SOIL HEALTH CARD
32. Integrated Rural and Agricultural Development Association (IRADA), Satara
Advanced Irrigation and Precision Agriculture 32