Planning Irrigation Network And Ofd Works

Planning Irrigation Network And Ofd Works 

Irrigation refers to application of additional water for crop maturity over
and above the rainwater or available soil moisture contents. Irrigation
requirement would be different for different crops, depending upon the
rains, soil, moisture available, period of maturity, type of crops such as
food gains, orchards, nurseries, etc.
Thus, irrigation may be defined as the science related with artificial
application of water to the crops as per crop requirement from pre sowing
to maturity. The application may be by gravity flow (border flooding,
check flooding, basin flooding, furrow irrigation) pressure flow-porous
hose method (drip irrigation and sprinkler irrigation).

Irrigation water may be underground water, storage water (tanks), diversion
works, etc. Ground water is used for irrigation by lifting through open
wells, tube wells. Application of ground water for irrigation is individualistic
and depends upon ground water table, recharge, fillable porosity of soil,
available mechanical means, etc. Being individualistic in nature mainly
applied for small holdings, though the source and method is highly
dependable, but due to involvement of lifting it is very costly. The cost of
lifting is directly proportional to the depth of water.

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