Irrigation Water Supply and Quality 
There is approximately 97.3 % of the total global water supply which is made up of oceans, seas and other saline inland water bodies, yet these are not available for human consumption because of high salt content. Fresh water accounts for only 2.7 % of the total estimated global water supply and 75% of this percentage is frozen in polar ice caps and glaciers. Some fresh water is blocked in inaccessible areas under the ground. Thus the fraction ....etc

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Quality and suitability of irrigation water
 Total salt concentration
 Relative proportion of sodium to other cations
 Carbonate and bicarbonate concentration
 Boron concentration
Total salt concentration in irrigation water
• Total concentration of soluble salts is the most important single criterion of irrigation water quality
• The harmful effects increases with increase in total salt concentration
• EC - the standard method of evaluating irrigation water for total salts
• ....etc

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SEWAGE WATER AS THE SOURCE OF IRRIGATION AND PLANT NUTRIENTS


INTRODUCTION
Supplies of good quality irrigation water are expected to decrease in future because the development of new water resources will not keep pace with increasing water needs of agriculture, industries and municipalities. some of these future water needs can be met by using available water supplies more efficiently but in many cases it will be necessary to make increased use of municipal waste waters and agricultural drainage water. agricul ....etc

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Intelligent Automatic Plant Irrigation System with water pump control based on soil moister condition
ABSTRACT
Irrigation is the key to a successful garden. Long gone are the days of manual
watering or relying on a friend to water when you are on vacation or away on
business. The Project presented here waters your plants regularly when you are
out for vocation. The circuit comprises sensor parts built using op-amp IC
LM324. Op-amp is configured here as a comparator. Two stiff copper wires are
inserted in ....etc

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NICE TOPIC............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ ....etc

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DRIP IRRIGATION AND CLOGGING IN DRIP IRRIGATION

INTRODUCTION
Drip irrigation is a method of applying water or frequent application of water to crops through small emitters in the vicinity of root zone, wetting a limited amount of surface area and depth of soil.

DRIP IRRIGATION SYSTEM
In drip system water is conveyed through a system of flexible pipe lines
Drip system reduces water requirement of the plant by maintaining minimum soil moisture, equal to field capacity.

SYSTEM COMPONENTS
A ....etc

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