Revista Brasileira de Engenharia Agrícola e Ambiental
Print version ISSN 1415-4366
SANTOS, Olívia S. N. et al. Growth and nutritional status of helicônia irrigated with treated wastewater in greenhouse. Rev. bras. eng. agríc. ambient. [online]. 2012, vol.16, n.8, pp. 820-827. ISSN 1415-4366. http://dx.doi.org/10.1590/S1415-43662012000800002.
In this study the growth and nutritional status of helicônias irrigated with treated wastewater of domestic origin associated with chemical fertilizers (NPK) was studied. The experiment was conducted in a greenhouse utilizing plants of helicônia Golden Adrian. The experiment was installed in 5 x 3 + 1 factorial scheme consisting of five depths of irrigation water (equivalent to 60, 80, 100, 120 and 140% of class A pan evaporation - ECA), three types of water (wastewater (AR), rainwater (AP) and a mixture of 50% AR + 50% AP) and control (soil without fertilizer and receiving rainwater corresponding to 100% ECA). The experimental design was in randomized blocks with five repetitions. The use of AR and larger depths of irrigation provided increases in evaluated parameters of growth. The levels of macronutrients in the leaves of plants irrigated with AR were similar to plants that received AP. The use of AR and AP resulted in increases in the content of micronutrients in leaves, especially Fe and Mn, above the levels recommended for the crop.
Keywords : reuse of water; nutrients; irrigation depth.