Arid ecosystems conditions could be characterized with
dwindling water resources and growing competition for water will reduce water
availability for agricultural development processing, while the need to meet
growing food demands will require that more food is grown with less water. Amore effective water and greater water-unit productivity will be a primarychallenge for future development. Due to excess or deficient levels of water or
nutrients could result in yield reductions, meanwhile, proper design and
management processes of microirrigation system are essential for successful
production. Systems must integrate soil-hydro-physical properties, crop root
distribution characteristics, water requirements related to crop growth stage
and environmental demand.
There is no doubt that the average crop yield is a
function of the irrigation water application factors (application uniformity;
depth of application and the amount of daily evapotranspiration supplied byrainfall), the hydraulic variation of distributors as well as the crop
sensitivity to the moisture stress.
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