EFFECT OF INJECTOR TYPES, IRRIGATION AND NITROGEN TREATMENTS ON EMITTERS CLOGGING

El-Gindy, A. M; Tayel, A. M, M.Y.; El-Bagoury, K.F.; Bebars, Sabreen Kh.A.

doi:10.21608/mjae.2009.108696

EFFECT OF INJECTOR TYPES, IRRIGATION AND NITROGEN TREATMENTS ON EMITTERS CLOGGING

Document Type : Original Article

Authors

¹ Prof. of Agric. Eng., Faculty of Agriculture, Ain Shams University, Egypt.

² Prof. of Soil Physics,and Water Relations, Field Irrigation Dept., NRC, Egypt.

³ Lecturer of Agric. Eng., Faculty of Agriculture, Ain Shams University , Egypt.

⁴ Assistant researcher, Water Relations and Field Irrigation Dept., NRC, Egypt.

10.21608/mjae.2009.108696

Abstract

Several problems are associated with drip irrigation system. Clogging of emitters appears to be one of the aimed most annoying problems related to drip irrigation. This research aimed to study the effect of injector types, irrigation requirements and nitrogen treatments on drippers clogging. To attain this target, three types of fertilizer injectors were investigated: by-bass pressurized mixing tank (J₁), venture (J₂), and positive displacement pump (J₃). Three irrigation treatments were used 50 (I₁), 75 (I₂), and 100 (I₃) % of ETc, and three levels of N- fertilizer (NH₄)₂SO₄ namely 60 (N₁), 90 (N₂), and 120 (N₃) kg/fed. The emitter clogging percentage was measured for the drip irrigation system at the beginning and the end of garlic growing season 2006 / 2007. According to clogging percent, the used injectors were arranged in the ascending order: J₃> J₂ > J₁. Differences in clogging percent among the used injectors were significant at the 5% level. Emitter clogging increased with increasing nitrogen application, and decreasing the irrigation rate. The maximum and minimum values of clogging percent were (17.79, 22.8; 27.9) and (13.24, 15.81; 18.9) under the condition of (J₃, J₂; J₁), (I₁ × N₃) and (I₃ × N₁), respectively.

Keywords

Main Subjects

Agricultural Irrigation and Drainage Engineering

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