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Ingeniería agrícola y biosistemas

versión On-line ISSN 2007-4026versión impresa ISSN 2007-3925


INZUNZA-IBARRA, Marco Antonio et al. Soil moisture depletion rates on sunflower yield. Ing. agric. biosist. [online]. 2022, vol.14, n.1, pp.51-63.  Epub 24-Oct-2022. ISSN 2007-4026.


Optimizing the irrigation water resource is essential due to its scarcity, so it is therefore important to consider efficient crops such as sunflower.


To estimate the sunflower grain yield at different levels of available soil moisture depletion to estimate water use efficiency (WUE) of the crop under different water conditions.


Seven treatments resulting from four soil moisture levels (40, 60, 80 and 100 % of available soil moisture [ASM]) and two periods of sunflower growth (from emergence to the beginning of flowering [first stage] and from flowering to physiological maturity [second stage]).


The highest grain yield (5.5 t·ha-1) and WUE of (0.922 kg·m-3) were recorded in the 60-60 % ASM treatment in the first and second stages of sunflower development, and by consuming 62.8 cm of water.

Limitations of the study:

The results should not be extrapolated to conditions outside the study levels.


To generate research methodologies to quantify, in a more realistic way, the relationship of yields with crop water requirements.


The highest WUE in sunflower (0.922 kg·m-3) was recorded when it consumed 31.4 and 28.12 cm of water, with 58.8 and 60.5 % of ASM in the first and second stages, respectively, which was similar to the 60-60 % treatment.

Palabras llave : Helianthus annuus L.; water efficiency; evapotranspiration; water production function.

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