AGRONOMIC PERFORMANCE OF PENNISETUM PURPUREUM CULTIVATED IN CONSTRUCTED WETLANDS
DOI:
https://doi.org/10.13083/reveng.v19i5.335Keywords:
wetlands construídos, águas residuárias, leitos cultivados, processamento do leiteAbstract
The study was carried out to evaluate the performance of the Pennisetum purpureum cultivated in constructed wetlands (CWs) subjected to different organic loading rate (OLS), prepared by mixing milk-processing wastewater and water (MPW), under the climatic conditions of Viçosa-MG. The experimental structure consisted of five CWs with horizontal sub-surface flow. Waterproof tanks (0.40 x 0.75 x 3.00 m) were filled with fine stones to the depth of 0.33 m. The MPW was applied at the mean flow rate of 60 L.day-1, with water retention time of 4.8 days and OLR of 66, 130, 190, 320 or 570 kg.ha-1.day-1 of BOD. Good rooting, although predominantly superficial, high yield and nutrient removal capacity, especially nitrogen and potassium, from MPW indicates good adaptation of P. purpureum to CWs.Downloads
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