Calculation of non-reactive chemical distribution in surface fertigation
- Autores: Theodor S. Strelkoff, Albert J. Clemmens, Hugo Perea-Estrada
- Localización: Agricultural water management: an international journal, ISSN 0378-3774, Vol. 86, Nº. 1-2, 2006, págs. 93-101
- Idioma: español
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Resumen
A simplified Lagrangian-based theory and practical computation of the longitudinal distribution of fertilizer injected into the inflow to a border strip, basin or furrow is presented as an adjunct to an existing surface-irrigation simulation model. The simplification consists primarily in the assumption that the chemicals are non-reactive and move by advection of the flowing water and that no mixing, dispersion, or diffusion of the chemical takes place. In a corollary calculation, the composition of runoff, in terms of water fractions selected for fertilizer injection, is also simulated. Comparisons of calculated post-irrigation longitudinal distribution of infiltrated chemical are made with the results of a complete advection-diffusion model that had already been validated in the field for injection of fertilizer pulses into the furrow inflow.
