Effect of using saline water on dripper clogging

Authors

  • Julio Cesar Vado Espinoza Department of Agricultural and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-7615-7114
  • Rafael Oliveira Batista Department of Engineering and Environmental Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-3083-6808
  • Paulo Cesar Moura da Silva Department of Engineering and Environmental Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-2512-4806
  • Stefeson Bezerra de Melo Department of Agricultural and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-3830-8380
  • Laio Ariel Leite de Paiva Department of Agricultural and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-7003-1625
  • Lucas Ramos da Costa Department of Agricultural and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-8710-1589
  • Bruno Caio Chaves Fernandes Department of Agricultural and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-5635-353X
  • Blake Charles Diniz Marques Department of Engineering and Environmental Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-7029-1128

DOI:

https://doi.org/10.1590/1983-21252025v3812699rc

Keywords:

Clogging. Uniformity of application. Dilution. Irrigation Efficiency.

Abstract

Drip irrigation and the agricultural use of brackish water mitigate water scarcity in semi-arid regions and food insecurity. The objective of this study was to evaluate the clogging behavior in three types of non-pressure-compensating emitters applying dilutions of brackish water. The study was carried out in Mossoro, RN, Brazil. On a bench, three dripping units were installed in a split-split-plot scheme, in a completely randomized design with three replicates. Plots comprised three dilutions of brackish water (BW) in supply water (SW) (D1 - 100% of SW; D2 – 50% of SW plus 50% of BW; and D3 - 100% of BW), subplots comprised three types of non-pressure-compensating drippers (NJ - NaanDanJain, SL – StreamLine and ST - Super Typhoon), and sub-subplots comprised evaluation times (0, 20, 40, 60, 80, 100, 120, 140 and 160 h). Every 80 h and 20 h of operation, the physical and chemical characteristics of the dilutions and the clogging indices (DUC) and relative flow rate reduction (RQR) were determined, respectively. The pH, EC, DUC and RQR were subjected to MANOVA and post-hoc test. The SL-D3 combination had greater clogging, reducing the DUC from 93% to 68%; the combinations least affected by clogging were SL-D1 and NJ-D2, both ending the tests with a DUC of 90%. There was a statistically significant variation in the DUC and RQR coefficients over the periods from 0 to 160 h and from 80 to 160 h, with no statistically significant variation from 0 to 80 h.

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Published

24-09-2025

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Scientific Article