Resumo

PACHECO-HERNANDEZ, Pedro et al. Treated Waste Water Comsumption Microlysimetric Quantification in Poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch). Tecnol. cienc. agua [online]. 2016, vol.7, n.6, pp.179-186. ISSN 2007-2422.

In an instrumented greenhouse a poinsettia culture was implemented in Jiutepec, Morelos , consumption of treated wastewater (ART) were measured with suction microlysimeters polyethylene pots 15 cm in diameter with similar granulometry substrates N, V and A, where N = plant leaf-litter/tezontle/coconut fiber in proportion 60:20:20, V = plant leaf-litter/tezontle/agrolita/coconut fiber (86:7:3.5:3.5) A = coconut fiber/plant leaf-litter/agrolita (40:40:20) and water consumption through microlysimeters balance with substrate N (BN) were measured, too . 11 of 22 variables had significant differences. BN has the highest values and V the lowest ones. N is equal to A, for all variables. The bracts have differences in area, fresh weight and dry weight, without differences in L*, C* and h. The leaves have no differences in area neither chlorophyll content, and they have differences in fresh and dry weight. Fresh and dry root weight without significant differences. The A substrate showed better agronomic results that N and V substrates. ART consumption of poinsettia can be affected by plant type and irrigation method. In the week after transplantation 2 (after punch), 8, 9 and 10 (start of pigmentation) there are differences between treatments and coincides with an ART decreased consumption period. The suction microlysimetric is a tool to quantify the consumption of ART on poinsettia.

Palavras-chave : Suction irrigation; porous capsule; water demand; protected agriculture.

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