Hydraulic performance of drippers with different waters and lateral line slopes

Szekut, Flavio Daniel; Azevedo, Carlos Alberto Vieira de; Boas, Márcio Antônio Vilas; Zuculotto, Thiago

doi:10.1590/1807-1929/agriambi.v22n12p813-818

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…Only the downhill system remained within the control limits, however, a decreasing sequence of (8 to 12) was identi ed. (Szekut et al 2018) report that lines positioned on a slope indicate better working conditions compared to a level and slope system.…”

Section: Resultsmentioning

confidence: 99%

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Monitoring of Urea Concentration in Drip Fertirrigation

Kepp1

Boas

Haupenthal1

et al. 2022

Preprint

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Topographic slope negatively affects irrigation uniformity when associated with fertilizer application via irrigation water. The concentration of the injection solution at the emitter outlet can adversely affect the uniformity of the drip system. Therefore, the objective was to evaluate the ideal concentration that maintains high levels of uniformity for the nitrogen solution, applied via fertigation, in different concentrations of the injection solution, with different levels of slope. The experiment was conducted out in a protected environment at the Laboratory of Irrigation and Fertigation (LIF), Cascavel-, PR. The experimental design was conducted out in randomized blocks in a 4x3 factorial scheme, in which the concentration of fertilizer was evaluated at three levels of slope: with plots divided into two factors, the main factor being the type of water, represented by four plots: clean water (from artesian well) and water with nitrogen fertilizer, urea (44% N) in three concentrations (2 g L-1; 4 g L-1; 6 g L-1); and as a second factor, the slope levels, represented by the subplot: level (0%), uphill of 2% and downhill of 2%. The addition of 4 g L-1 urea concentration affected the uniformity at all slope levels, presenting values for UD< 90%, observed in the Shewhart control chart. The increase in urea concentration by 6 g L-¹ affected the distribution uniformity of the system in level, with values for UD< 70%. The system was able to apply concentrations up to 2 g L-1 in level, presenting Cpl = 2.86.

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Section: Resultsmentioning

confidence: 99%

“…Szekut et al 2018) and(Lopes et al 2019), studying the uniformity of irrigation application distribution, observed greater excellence in operation for lines arranged on a downhill, compared to level and uphill.…”

mentioning

confidence: 98%

Monitoring of Urea Concentration in Drip Fertirrigation

Kepp1

Boas

Haupenthal1

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…This approach presents an essential criterion for data visualization, so the points plotted within calculated limits can be considered process-acceptable. The control charts also present complementary criteria for quality analysis, including occurrence point sequence, upward-downward trends, cyclical patterns shift, and points plotted close to control limits and grouped around the mainline (SZEKUT et al, 2018). L.…”

Section: Data Collection and Processingmentioning

confidence: 99%

Quality of coffee planting techniques by aerial sensors and statistical process control

Santana,

Ferraz,

Cunha

et al. 2025

RCA

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Planting is considered one of the most essential steps in coff ee growing. Lack of uniformity in planting may compromise future operations. Therefore, verifying planting operations quality is fundamental to optimizing production processes and reducing costs. This study aimed to investigate planting techniques through Statistical Process Control (SPC) and aerial images. Carried out in two areas, managed manually and semi-mechanized in the Bom Jardim Farm (MG -Brazil). Data were collected through Remotely Piloted Aircraft (RPA). Quality control charts and density maps were used to identify variations in distribution and spacing between plants and planting rows. It was found that the planting carried out manually was 4.7% wider than projected due to spacing reduction from 0.5 m to 0.48 m. The semi-mechanized system displayed a defi cit of 7% compared to the projected planting system, using 0.55 m between plants. The density map showed the most signifi cant planting alignment variations. Despite displaying lower results than the manual system, the semi-mechanized system improvements are valid for their minimal average variations. Thus, correcting points found outside the limits can increase the effi ciency of semi-mechanized planting.

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Statistical Quality Control and Electrical Conductivity for Evaluation of the Uniformity of Different Drip Fertigation Solutions

Cosmo¹,

Andrade²,

Galeriani³

et al. 2021

R_I

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Population growth has led to an intensified search for ways to increase the efficiency of agricultural production, including improvements of irrigation systems. The aim of this work was to evaluate the uniformity of different drip fertigation techniques, as well as their monitoring using electrical conductivity measurements and statistical quality control charts. For this, an experiment was performed according to a fully randomized design, with six treatments: T1) water (control); T2) Forth Frutas fertilizer; T3) Fortgreen fertilizer; T4) water (control); T5) Bio Bokashi liquid fertilizer; and T6) swine production wastewater. Each treatment consisted of 25 assays (replications). For the assays, 16 collection points were selected for measurements of volume, pH, and electrical conductivity. The data were analyzed using the Christiansen uniformity coefficient, the distribution uniformity coefficient, and the coefficient of variation of the total flow, employing Tukey’s test (5% level), together with statistical quality control charts. The results revealed uniformity above 90% for irrigation and fertigation, while statistically better control was obtained for irrigation. It could be concluded that irrigation and fertigation were similar in terms of uniformity, demonstrating the feasibility of using different fertigation solutions, while the control charts enabled efficient monitoring of the uniformity of the systems.

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Hydraulic performance of drippers with different waters and lateral line slopes

Cited by 4 publications

References 13 publications

Monitoring of Urea Concentration in Drip Fertirrigation

Monitoring of Urea Concentration in Drip Fertirrigation

Quality of coffee planting techniques by aerial sensors and statistical process control

Statistical Quality Control and Electrical Conductivity for Evaluation of the Uniformity of Different Drip Fertigation Solutions

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