Growth of young Tabebuia aurea seedlings under irrigation with wastewater from fish farming

Abstract

A B S T R A C TThis study aimed to evaluate the growth of young Tabebuia aurea seedlings irrigated with different concentrations of wastewater from fish farming. The experiment was conducted in a seedling nursery, from June to August 2013. The treatments consisted of five concentrations of wastewater from fish farming diluted in freshwater (0, 25, 50, 75 and 100% of wastewater). Plant height, stem diameter and plant height/stem diameter ratio were evaluated every 15 days to verify the effects of treatments on seedlings growth. At the end of the experiment, individual leaf area, leaf area, leaf dry matter, stem dry matter, root dry matter, total dry matter and Dickson quality index were also evaluated. The reuse of wastewater from fish farming diluted at concentrations of 25 and 50% in freshwater is a viable alternative in the production of Tabebuia aurea seedlings. However, higher concentrations hinder the production of seedlings of this species.Crescimento de mudas jovens de craibeira sob irrigação com água residuária da piscicultura R E S U M O Objetivou-se, neste trabalho, avaliar o crescimento de mudas jovens de craibeira (Tabebuia aurea) irrigadas com diferentes concentrações de água residuária da piscicultura. O experimento foi conduzido em viveiro de produção de mudas, entre junho e agosto de 2013. Os tratamentos foram compostos por cinco concentrações de água residuária da piscicultura diluídas em água de abastecimento (0, 25, 50, 75 e 100% de água residuária). Foram realizadas avaliações quinzenais para verificação dos efeitos dos tratamentos no crescimento das mudas avaliando-se o comprimento da parte aérea, diâmetro do colo e relação comprimento da parte aérea/diâmetro do colo. A área foliar unitária, área foliar, matéria seca das folhas, caules, raízes e total e índice de qualidade de Dickson também foram avaliados ao término do experimento. O reúso de água residuária da piscicultura diluída nas concentrações de 25 a 50% é uma alternativa viável para irrigação de mudas de craibeira sendo que concentrações superiores inviabilizaram a produção de mudas dessa espécie.

Production of Ambarella Seedlings Treated With Indole Butyric Acid and Irrigated With Reused Water

“…Thus, it is possible to note the importance and viability of using wastewater according to its local availability, as it promotes better agronomic performance and meets the nutritional needs of crops such as cashew (A. occidentale L.) (COSTA et al, 2012), passion fruit (Passiflora edulis Sims) (ALMEIDA et al, 2012), Eucalyptus grandis Hill. ex Maiden (AUGUSTO et al, 2007) and forest species of the Caatinga biome (ARAÚJO et al, 2007;OLIVEIRA et al, 2013;PINTO et al, 2016;ALMEIDA et al, 2017b). Despite the quadratic behavior observed in root system growth, there were no restrictions on shoot growth and no symptoms of toxicity were observed.…”

“…These authors also verified that TDE application led to better results compared to public-supply water. This is explained by the nutritional characteristics of the effluent, since the good nutritional supply is one of the characteristics of the TDE, positively influencing the water and nutritional status of the plant, increasing its growth and influencing the quality of seedlings (REBOUÇAS et al, 2010;PINTO et al, 2016;ALMEIDA et al, 2017b).…”

Desenvolvimento de mudas de Mimosa caesalpiniifolia Benth e Amburana cearensis (Fr. All) A.C Smith. irrigadas com esgoto doméstico tratado

“…Ela interfere na porcentagem, na velocidade e na uniformidade do processo, está associada à mobilização de reservas e à liberação de energia pela respiração, bem como afeta as atividades enzimática e metabólica do processo germinativo (MARCOS FILHO, 2005). , 2011;MARTINS, 2016;PINTO et al, 2016;ALMEIDA et al, 2017;REBOUÇAS et al, 2018).…”

Morphological and nutritional evaluation of ‘caraíba’ seedlings in different substrates using domestic sewage effluent for fertirrigation

“…Water consumption in agricultural activity is significant in Brazil; it is equivalent to 70% of the total consumption. According to Pinto et al [1], the decrease in the volume of surface and ground water of quality must point to a tendency of sustainable use of this resource with minimum damage to environment. The reuse of water is an alternative especially in semi-arid region, where there is natural water limitation.…”