Abstract

MOLINA-OCHOA, MARÍA JAQUELINE; VELEZ-SANCHEZ, JAVIER ENRIQUE  and  RODRIGUEZ, PEDRO. Effect of controlled deficit irrigation on the fruit growth rates of the Triunfo de Viena pear (Pyrus communisL.) variety. rev.colomb.cienc.hortic. [online]. 2015, vol.9, n.2, pp.234-246. ISSN 2011-2173.  https://doi.org/10.17584/rcch.2015v9i2.4179.

From October, 2011 to April, 2012, an experiment was carried out with deficit irrigation (RDC) in a crop of the Triunfo de Vienna pear variety, which consisted of three irrigation treatments: control, irrigated throughout the year at 100% of the potential evapotranspiration (ETc); treatments (T1) and (T2) were irrigated throughout the year at 100% (ETc) except during the period of rapid fruit growth when 67% and 55% of the (ETc) were used, respectively. The evapotranspiration (ETo) was determined with the Penman- Monteith equation. The results indicated that none of the treatments differed significantly from the control in terms of fruit growth, yielding a water savings of 33 to 45% as compared to the control for T1 and T2, respectively, with the differential irrigation application, following a sigmoid adjusted to a three-parameter logistic equation curve.

Keywords : potential evapotranspiration; water savings; sigmoid curve.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )