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In order to study the effects of differnet chemical components of irrigation water with different levels of salt concentration and pH on emitter
clogging, a trickle irrigation system experiment was carried out in the greenhouse research center of the College of Agriculture, Isfahan University of Technology. Since the sensitivity of the emitters due to clogging are different,
four different types of emitter, namely in-line long path, pressure regulator, gun emitters, and double chamber tube were used. The results showed that as
the mineral concentration and pH of irrigation water increases, the clogging would increase. Emitter clogging reduced the discharge rate, distribution
uniformity. absolute distribution and Christiansen uniformity coefficient of the emitters. The results showed that as the salt concentration and pH of
irrigation water increase, the coefficient of variation of emitter discharge would increase significantly. These changes were different for each type of
emitter. As the calcium and bicarbonate ions increased the LSI showed higher positive values which indicate potential for sedimentation and clogging. Decreasing the acidity of irrigation water hy injection of sulfuric acid to
reservoir decreases the emitter clogging significantly. The results showed that the in-line long path emitter has the least sensitivity to clogging. In general, the sensitivity to chemical clogging were reduced for double chamber tube, gun, pressure regulator and in-line long path emitters respectively.