2.3. Irrigation system
All calculations for the system design were completed according
to the soil and plant properties before the system was installed
in the field. The drip-irrigation system consisted of a control unit
and distribution lines. The control unit contained a hydrocyclone,
a fertilizer tank, a disk filter, and control valves. In the distribution
system, polythene (PE) pipes of 63 and 40mmdiameter were used
for main and sub main lines, respectively. The PE lateral lines had inline
compensating emitters, and the discharge rate of the emitters
was 4 L h−1 at a pressure of 100 kPa. The emitter spacing was chosen
to be 0.33m due to the characteristics of soil (Keller and Bliesner,
1990). One drip line for each crop line was used in the experiment.
Each plot was connected by the flow meter to deliver the desired
2.3. Irrigation systemAll calculations for the system design were completed accordingto the soil and plant properties before the system was installedin the field. The drip-irrigation system consisted of a control unitand distribution lines. The control unit contained a hydrocyclone,a fertilizer tank, a disk filter, and control valves. In the distributionsystem, polythene (PE) pipes of 63 and 40mmdiameter were usedfor main and sub main lines, respectively. The PE lateral lines had inlinecompensating emitters, and the discharge rate of the emitterswas 4 L h−1 at a pressure of 100 kPa. The emitter spacing was chosento be 0.33m due to the characteristics of soil (Keller and Bliesner,1990). One drip line for each crop line was used in the experiment.Each plot was connected by the flow meter to deliver the desired
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