Impact of water potabilization sludge from the Lukaya plant on the growth of Amaranthus hybridus

Ruffin Nsandji Ngadi 1, *, Crispin Kyela Mulaji 2, Clément Mukendi Mukendi 1, Lyna Fama Tongo Mukwa 3, Jean Fausttin Fadjay Banda Kindela 1, Zabo Assumani Idrissa 4, Kizito Iloko 1 and Blaise Muningula Waiva 1

1 Department of Chemistry, Faculty of Sciences, National Pedagogical University, DR Congo.
2 Department of Chemistry, Faculty of Sciences, University of Kinshasa, DR Congo.
3 Department of crop science, Faculty of Agronomy National Pedagogical University, DR Congo.
4 Département of Biology, Faculty of Sciences, National Pedagogical University, DR Congo.
 
Research Article
International Journal of Science and Research Archive, 2023, 09(01), 524–532.
Article DOI: 10.30574/ijsra.2023.9.1.0405
Publication history: 
Received on 13April 2023; revised 17 June 2023; accepted on 19 June 2023
 
Abstract: 
This study aimed at spreading of water purification sludge from Lukaya and the determination of the optimal proportion improving the growth of market gardening crops. The sludge from the purification of the Lukaya water treatment plant has been analyzed. The results indicate the presence of iron (9.8%), phosphorus (0.5%), nitrogen (0.5%), potassium (1.1%), magnesium (0.99%), carbon (0. 5%), aluminum (18.55%) and organic materials (1.2%).
Its spreading on Amaranthus hybridus cultivation soil has improved productivity. The optimal proportion is at the dose of 40% mud and 60% soil. In excess, this sludge reduces plant growth.
The variances analysis indicated that the F test is significant at the height of the plant due to the presence of iron which plays an important role in photosynthesis and chlorophyll, magnesium and phosphorus and not significant for the number of leaves and the weight of the plant.
 
Keywords: 
Impact; Growth; Sludge; Potabilisation-Soil-Water
 
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