Revista Ingeniería UC (Sep 2020)

Effect of the arrangement of drip irrigation laterals and partial soil drying on potato yield

  • Miguel Sánchez-Delgado,
  • Jesús A. Mejía-Marcacuzco,
  • Edilberto Guevara-Pérez,
  • Piero Natividad-Toribio,
  • Luis Razuri-Ramírez

Journal volume & issue
Vol. 27, no. 2
pp. 136 – 149

Abstract

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In the present investigation, the effect of the disposition of the drip irrigation laterals on the potato yield was evaluated, using the partial drying of roots SPR, replacing a sheet of water of 100 and 50% of the evapotranspiration of the crop ETc. The experimental design was made based on the Completely Random Factorial Design considering two factors: (a) types of lateral arrangement (T-1 parallel arrangement and T-2 linear arrangement) and (b) irrigation types (100% ETc SPR1 and 50% ETc SPR2), obtaining four treatments as a result. The application of the SPR was carried out in two periods: the first, between days 20-29 after planting (during growth) and the second, between days 76-94 after planting (during maturity). Total and commercial yield as well as water productivity were evaluated. The results show that the type of irrigation had a greater incidence in the total yield of the crop with yields between 61 and 64 t/ha, while the disposition factor had a greater incidence in the commercial yield with yields between 51 and 60 t/ha. Water use efficiency varied between 38 and 47 kg/m3.

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