EFICÁCIA DE DIFERENTES PRODUTOS NO DESENTUPIMENTO DOS GOTEJADORES NUM SISTEMA DE REGA GOTA-A-GOTA

Authors

  • João Salgueiro Escola Superior Agrária de Santarém, Instituto Politécnico de Santarém, Portugal
  • Ana Paulo Escola Superior Agrária de Santarém, Unidade de Investigação do Instituto Politécnico de Santarém, Instituto Politécnico de Santarém

DOI:

https://doi.org/10.25746/ruiips.v6.i3.16141

Keywords:

Emitters cleaning in a drip irrigation system, phosphoric acid, nitric acid,

Abstract

The objective of this experiment is to test and compare the efficacy of phosphoric acid, nitric acid, and two commercial products, Oxi Premium 15 and Sulfacid, in cleaning the emitters of a drip irrigation system installed in a superintensive olive orchard located near Santarém. In the experiment the total of 80 emitters in four irrigation sectors were selected, 20 in each sector. Water volumetric samples of their flow were collected for 1 minute. The samples were collected  before and after the product has been applied, making a total of 160 samples. The emitter performance and the efficacy of the cleaning products were evaluated using the coefficient of variation of emitter discharge (cv), the uniformity coefficient (UD), and the percentage of emitter clogging, before and after the emitter cleaning. The statistical analysis concerns the difference of discharge before and after the product has been applied. The mean, the standard deviation and the confidence intervals for the discharge difference was assessed. The number of emitters that have reached the maximum discharge rate (50 mL/min.) was recorded. The final results are not completely conclusive regarding the comparison between products, however it is observed that nitric acid and Oxi Premium 15 are the most effective in the cleaning of drippers and irrigation piping. Sulfacid is the product with the least satisfactory results.

Downloads

Published

2018-12-22

How to Cite

Salgueiro, J., & Paulo, A. (2018). EFICÁCIA DE DIFERENTES PRODUTOS NO DESENTUPIMENTO DOS GOTEJADORES NUM SISTEMA DE REGA GOTA-A-GOTA. Revista Da UI_IPSantarém, 6(3), 3–13. https://doi.org/10.25746/ruiips.v6.i3.16141

Issue

Vol. 6 No. 3 (2018): Edição temática: Ciências Naturais e do Ambiente

Section

Papers

License

Authors publishing in this journal agree to the following terms:

Authors retain copyright and grant the journal the right of first publication, with the article simultaneously licensed under the Creative Commons Attribution License that allows sharing of the work with acknowledgement of authorship and initial publication in this journal.
Authors are permitted to enter into additional contracts separately for non-exclusive distribution of the version of the article published in this journal (e.g., publish in an institutional repository or as a book chapter), with acknowledgment of authorship and initial publication in this journal.
Authors have permission and are encouraged to publish and distribute their work online (e.g., in institutional repositories or on their personal webpage) at any point before or during the editorial process, as this may generate productive changes, as well as increase the impact and citation of the published work.

Most read articles by the same author(s)