| Autor: |
Burducea M; Research and Development Station for Aquaculture and Aquatic Ecology, 'Alexandru Ioan Cuza' University, Carol I, 20A, 700505 Iasi, Romania., Lobiuc A; Human Health and Development Department, 'Stefan Cel Mare' University, Strada Universitatii, 720229 Suceava, Romania., Dirvariu L; Research and Development Station for Aquaculture and Aquatic Ecology, 'Alexandru Ioan Cuza' University, Carol I, 20A, 700505 Iasi, Romania., Oprea E; Research and Development Station for Aquaculture and Aquatic Ecology, 'Alexandru Ioan Cuza' University, Carol I, 20A, 700505 Iasi, Romania., Olaru SM; Faculty of Biology, 'Alexandru Ioan Cuza' University, Carol I, 20A, 700505 Iasi, Romania., Teliban GC; Faculty of Horticulture, 'Ion Ionescu de la Brad' Iasi University of Life Sciences, Aleea Mihail Sadoveanu 3, 700490 Iasi, Romania., Stoleru V; Faculty of Horticulture, 'Ion Ionescu de la Brad' Iasi University of Life Sciences, Aleea Mihail Sadoveanu 3, 700490 Iasi, Romania., Poghirc VA; Research Institute for Agriculture and Environment, 'Ion Ionescu de la Brad' Iasi University of Life Sciences, 9 Mihail Sadoveanu Alley, 700789 Iasi, Romania., Cara IG; Research Institute for Agriculture and Environment, 'Ion Ionescu de la Brad' Iasi University of Life Sciences, 9 Mihail Sadoveanu Alley, 700789 Iasi, Romania., Filip M; Research Institute for Agriculture and Environment, 'Ion Ionescu de la Brad' Iasi University of Life Sciences, 9 Mihail Sadoveanu Alley, 700789 Iasi, Romania., Rusu M; Research Institute for Agriculture and Environment, 'Ion Ionescu de la Brad' Iasi University of Life Sciences, 9 Mihail Sadoveanu Alley, 700789 Iasi, Romania., Zheljazkov VD; Crop and Soil Science Department, Oregon State University, 109 Crop Science Building, 3050 SW Campus Way, Corvallis, OR 97331, USA., Barbacariu CA; Research and Development Station for Aquaculture and Aquatic Ecology, 'Alexandru Ioan Cuza' University, Carol I, 20A, 700505 Iasi, Romania. |
| Abstrakt: |
Periodic removal of sediment from aquaculture ponds is practiced to maintain their productivity and animal welfare. The recovery of sediment as a plant fertilizer could alleviate the costs of sediment removal. The objective of this study was to test the effects of a dried sediment, extracted from an aquaculture pond used for common carp cultivation, on the growth and physiology of potted wheat grass and the quality of the juice obtained from wheat grass. The results showed that sediment application did not produce significant morphological changes, although the values for plant height (16.94-19.22 cm), leaf area (19.67-139.21 mm 2 ), and biomass (3.39-4.26 g/plant) were higher in sediment-grown plants. However, at a physiological level, the effect was negative, decreasing photosynthesis (0.82-1.66 μmol CO 2 m 2 s -1 ), fluorescence ΦPSII (0.737-0.782), and chlorophyll content (1.40-1.83 CCI). The juice yield was reduced in the sediment treatments (46-58 g/100 g), while the quality was improved by increasing the content of phenols (2.55-3.39 µg/mL gallic acid equivalent), flavonoids (1.41-1.85 µg/mL quercetin equivalent), and antioxidant activity (47.99-62.7% inhibition of; 2,2-diphenyl-1-picrylhydrazyl). The positive results obtained in this study can be attributed to the moderate nutrient content of the sediment and a negligible concentration of heavy metals. |
