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Growth, water consumption and mineral composition of watercress under hydroponic system with brackish water Horticultura Brasileira
Lira,Raquele M; Silva,Ênio FF; Silva,Gerônimo F; Soares,Hammady R; Willadino,Lilia G.
ABSTRACT The underground water reserves in the semi-arid region present high salinity levels. However, the scarcity of the resource compels the use of this water for several human activities, including agriculture. The aim of this work was to evaluate the use of brackish water for watercress cultivation (Nasturtium officinale) in a hydroponic NFT system (laminar flow of nutrients) and effects on water consumption, growth, yield and nutrient extraction by the plant. We studied six levels of salinity (0.2; 1.2; 2.2; 3.2; 4.2 and 5.2 dS m-1), in a completely randomized experimental design, with four replicates. Salinity was obtained by the addition of NaCl into the local water supply, being these waters used to prepare the nutrient solution and to replace the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nasturtium officinale; Nutrient solution; NFT system; Salinity.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100013
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Activity of antioxidative enzymes in watercress and Chinese cabbage plants grown under hydroponic system with brackish water Horticultura Brasileira
Lira,Raquele M; Silva,Ênio FF; Willadino,Lilia; Oliveira Filho,Ronaldo A; Andrade,Gilvany R.
ABSTRACT Underground water reserves in Semiarid Region present high salinity levels; however, scarcity of resource compels farmers to use this water for conventional agriculture. Biomass production and activity of the antioxidative defense system of Chinese cabbage and watercress were evaluated in plants grown under hydroponic NFT system with brackish water. The experimental design was completely randomized, with four replications and five water salinity levels (1.95; 3.37; 4.48; 6.82 and 7.51 dS m-1), obtained by an increasing addition of NaCl into the local water supply and nutrient salts for preparation of nutrient solution. Both watercress and Chinese cabbage plants decreased in fresh and dry shoot biomass, in relation to increase of salinity in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Naturtium officinale; Brassica pekinensis; Superoxide dismutase; Ascorbate peroxidase; Catalase.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000200205
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