Irrigation of sandy soils must be considered carefully. In this chapter a review is made of
the physical characteristics and water-soil relationships of sandy soils [1], as well as various
irrigation methods. Recommendations are also given on proper water management at field
level.
Dry land and irrigated agriculture depend on the management of two basic natural resources;
soil and water. Soil is the supporting structure of plant life and water is essential to sustain
plant life. The wise use of these resources requires a basic understanding of soil and water as
well as the crop itself.
Irrigating sandy soils requires high attention to the timing and amount of irrigation water
applied [2], which are crucial decisions for each operator. Applying too much water means
increased pumping costs, reduced water efficiency, and increased potential for pollutant
leaching below the rooting zone and into the ground water. Delaying irrigation until plant
stress is evident can result in economic yield loss.
This chapter describes some "best" soil moisture management strategies and monitoring
techniques that a farmer should consider in managing irrigation and maintaining soil moisture
for optimum crop production and least possible degradation of ground water quality.
The main objective of this chapter is to investigate main soil physical and chemical
properties that affect the irrigation water amount and to suggest possible irrigation
strategies for sandy soil.
Drip irrigation is one of the most efficient irrigation methods to be developed [3]. Although it
had been known for many years, some horticulturists and nursery gardeners mostly used it.
Its application at the farm level became more common with the extensive use of polyethylene
plastics, which has led to reduced cost and increased acceptability for some crops. Trickle