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The Study on Effects of Plastic Mulches on Emitter clogging and Water Emission Uniformity in Surface Drip Irrigation Systems in Pistachio Orchards

نوع محتوی: طرح پژوهشی
Language: Persian
استان موضوع گزارش: البرز
شهر موضوع گزارش: کرج
Document National Code: R-1051585
Publish: 16 February 2019
دسته بندی علمی: علوم کشاورزی
View: 223
Pages: 24
Publish Year: 1395

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The Study on Effects of Plastic Mulches on Emitter clogging and Water Emission Uniformity in Surface Drip Irrigation Systems in Pistachio Orchards abstract

To study the effects of using plastic mulch on emitters clogging in drip irrigation system, this research was conducted in two pistachio orchards in the western suburbs of Rafsanjan, Iran for two years (2014-2015). In each orchard, three mulch treatments including: without mulch (C), black plastic mulches (MB) and white plastic mulch (MW), with three replications were used. To evaluate emitters clogging, Changes in water flow emitters (Qvar) and water emission uniformity (EUm) were used. Results showed that, in both experimental gardens, after two years of using plastic mulch on the laterals, Qvar and EUm indicators were in better condition compared to the control. In terms of Qvar, in control with record average of 19.90 and 16.64 percent, in the gardens of No. 1 and 2, respectively, the water distribution was acceptable. While the black plastic mulch treatment with 8.37 and 8.44 percent in the discharge variation in the gardens, in terms of Qvarwas desirable.EUm index also with means 89.01 and 89.79 percent in the control showed good performance of the systemin the gardens No. 1 and 2, respectively.While the white and black plastic mulch treatments with average water emission uniformity 95.84 and 95.26 percent had excellent performance in the distribution of water in the gardens. The mulch color had no effect on these parameters.In general, use of plastic mulch to reduce mineral deposits in the water outflow from the emitters improved water distribution in the garden.Keyword: Discharge variation, Mineral deposits, Dripperclogging, Plastic mulch, Water emission uniformity

The Study on Effects of Plastic Mulches on Emitter clogging and Water Emission Uniformity in Surface Drip Irrigation Systems in Pistachio Orchards authors