Comparative Study of the Agronomic Effect of Compost from Faecal Sludge Scum and Faecal Sludge Ash on Vegetable Crops in the Sangalkam Area of Senegal: Case of Onion (Allium cepa)
El Hadji Mamadou Sonko, Seynabou Zeina Badji, Arfang Mafoudji Sonko, Maïmouna Lo, Saliou Ndiaye, Cheikh Diop
Abstract
Valorisation of faecal sludge is an option that is increasingly being explored in the context of faecal sludge management. This study is part of that process and tests the effect of compost from faecal sludge and ash from faecal sludge incineration on onions. Thus, faecal sludge ash and scum compost were characterised and their nitrogen content was used to calculate the doses to be applied. The Fischer block design was set up with 6 treatments organised in 4 replications, with three factors such as compost dose, compost+ash dose and chemical fertiliser; 24 plots of 3 m² each. The monitoring parameters were leaf height, number of leaves, collar diameter, average fruit weight, fruit diameter and yield. The results show that the normal dose of 16.66 t/ha is better than the compost+ash composition and chemical fertiliser on onion in terms of leaf height, number of leaves and crown diameter, with 45.42 cm; 6.85; 1.027 cm respectively. The best yield was obtained with the normal dose of compost with 42.5 t/ha
Keywords
Agronomic value, sewage sludge, scum compost, sewage sludge ash, onion
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