Effect of irrigation with nutrient solutions mixed with treated wastewater on Asiatic lily ‘Brunello’ grown in a closed soilless culture

Abstract

A plastic greenhouse study was implemented to evaluate the potential use of treated wastewater for irrigation of Asiatic lily 'Brunello' grown in zeolite. Plants received the following treatments: a nutrient solution (N) alone, (N) mixed with treated wastewater (W) at rates of 3N:1W, 1N:1W and 1N:3W respectively. A closed system was used in which the drain solution was circulated for several days until its electrical conductivity reached 2.3 dS m -1 , after which fresh irrigation solutions were used to start a second cycle of circulation. The results indicated that plants irrigated with (N) or 3N:1W solution had the longest stems (34.4 and 36.2 cm) respectively, peduncles and buds (about 4.5 cm), and the greatest shoot (3.4 and 3.8 cm) and bud mass (14.95 and 17.6 g) respectively. Plants irrigated with 1N:3W solution had the highest dry mass tissue content of K (3.06 g kg -1 ) and B (35.5 mg kg -1 ). Plants irrigated with 1N:1W or 1N:3W were inferior to other plants. It can be concluded that 1N:3W mixture may be used for production of high quality cut flowers of lily. Moreover, it is expected to save 3.4 litres m V raziskavi, izvedeni v plastenjaku, je bila ovrednotena potencialna uporaba odpadne vode za gojenje azijskih lilij 'Brunello' gojenih na zeolitu. Opravljena so bila naslednja obravnavanja: uporaba čiste hranilne raztopin (N), mešanica hranilne raztopine (N) z odpadno vodo (W) v razmerjih 3N:1W, 1N:1W in 1N:3W. Uporabljen je bil zaprt sistem, v katerem je raztopina krožila več dni, dokler njena električna prevodnost ni dosegla 2,3 dS m -1 , potem je bila uporabljena sveža raztopina za začetek drugega kroga poskusa. Rezultati so pokazali, da so imele rastline, ki so bile namakane samo s hranilno raztopino (N) ali z mešanico 3N:1W, najdaljša stebla (34,4 in 36,2 cm), cvetne peclje in popke (okrog 4,5 cm), največjo maso poganjkov (3,4 in 3,8 cm) in popkov (14,95 in 17,6 g). Rastline, ki so bile zalivane z raztopino 1N:3W, so imele največjo suho maso tkiv, največjo vsebnost K (3,06 g kg -1 ) in B (35,5 mg kg -1 ). Rastline, ki so bile namakane z mešanicami raztopin 1N:1W in 1N:3W so bile slabše v primerjavi s prejšnjimi. Zaključili bi lahko, da bi za pridelavo zelo kvalitetnega rezanega cvetja azijskih lilij lahko uporabili mešanico raztopin 1N:3W in s tem prihranili 3,4 l m -2 hranilne raztopine in 1850, 347 in 1870 mg m -2 dan -1 N, P in K.

Scientific analysis of cut flowers: a review of the main technical issues developed

“…Water requirements are linked to climate and production system, for example, it has been noted that in tropical climates roses show stem thickening and water stress problems, which can be mitigated under greenhouse conditions. Some authors recommend maintaining water content in soil stresses close to 3 kPa (Almeida et al, 2012;Oki et al, 2001), this also results in better flower quality, but the worst results were observed for stresses above 15 kPa (Al-Hammouri et al, 2017). We have also experimented with the use of low quality water (saline), evaluating the quality of roses (Rosa indica, Rosa canina and Natal Briar) and carnations Voyore, Diana and Chad, with promising and not very limiting results from the production point of view (Tsirogiannis et al, 2010).…”

“…Research has also been conducted on the cultivation of Asiatic lily 'Brunello', specifically evaluating irrigation in zeolite and a mixture of treated water (Al-Hammouri et al, 2017). The results indicated that the concentration of treated water for irrigation, depending on the concentration, has an effect on crop development, however, it is possible to achieve quality standards when a balance of concentrations is found.…”

Reuse of Treated Municipal Wastewater from Constructed Wetlands for Cut Flowers Irrigation in Aeroponic Cultivation

“…The aeroponic baskets are made of plastic and grooved with a total volume of 232.26 cm 3 , filled with Arlite (inert material) for the development of the root. Lilium 'Tresor' was selected as the cut flower because it has a commercial market and also, it has shown tolerance to irrigation with water with an electrical conductivity of up to 2.3 dS/m [25]. The experimental units were installed in the experimental station of the Center for Research and Development in Water Resources (CIDERH) in the city of Iquique, in the north of Chile, in the coastal Desert of Atacama, and separated from the outside only by an anti-aphid mesh and without temperature regulation.…”