Near field spray measurements for fixed spray plate sprinklers

Valencia, Andrés; Briggs, Joan; Jacobs, Seth; Marshall, André W.

doi:10.1007/s00271-019-00640-8

Cited by 2 publications

(1 citation statement)

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“…The 2DVD and 4S methods are the most recent optical drop characterization techniques applied to sprinkler irrigation. Both provide a multidimensional analysis of irrigation droplets, although some limitations apply to their outdoor applications (Valencia et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of a growing maize canopy on solid-set sprinkler irrigation: kinetic energy dissipation and water partitioning

et al. 2021

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The energy of sprinkler irrigation drops splashing on the soil surface or the crop canopy depends on their size and velocity. The kinetic energy of sprinkler irrigation drops is a major factor degrading the soil surface. The effect of a growing maize canopy on sprinkler drop energy dissipation and water partitioning was analyzed. A field experiment was performed on a solid-set sprinkler irrigated plot cropped with maize. Measurements were performed at different locations and heights into the sprinkler layout. Tests were performed at five maize heights.At each maize height, drop population characteristics and pluviometry were measured above and below the maize canopy. Drop population was measured with an optical disdrometer. Catch-can devices were used to measure pluviometry. Solid-set sprinkler irrigation distributes water quite homogeneously, but drop characteristics largely differ between layout locations. The effect of the crop on drop characteristics intensified as the canopy height increased. The canopy cover reduced drop diameter more than it reduced drop velocity. As the canopy grew, its capacity to intercept and derive irrigation water to stemflow increased. The largest part of energy dissipation by the maize canopy took place in the top 1.5 m. A fully developed maize canopy reduced the drop kinetic energy reaching the soil to 13.6% of that reaching bare soil. As a management practice, in sensitive soils or in sprinkler systems applying water with high specific kinetic power, irrigation of bare soils should be avoided.

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Section: Introductionmentioning

confidence: 99%