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Impact of Composts maturity on Growth and Agronomic Parameters of maize (<i>Zea mays</i>)

American Journal of Analytical Chemistry 2021年第2期12卷 29-45页

作者： mawuli Tamakloe Edem Komi Koledzi Etsè Aziable maglwa Tcha-Thom nitale m.balikine krou Laboratory of Waste management Treatment and Recovery (Laboratory GTVD) Faculty of Sciences University of Lomé Lomé Togo Laboratory of Sanitation Water Science and Environment (LSEE) Faculty of Science and Technology University of Kara Kara Togo

Several methods have been developed in the literature which allow the maturity of composts to be assessed before it is used in agriculture. The objective of this study is to assess the maturity of the composts produced at the platform of the NGO ENPRO in Lomé on the growth and agronomic parameters of maize (Zea mays L., var. IKENE). To do so, three types of compost (gargabe, fruit waste, animal litter) were made for at least 3 months. The chemical analysis, phytotoxicity and agronomic tests carried out made it possible to assess the maturity of these composts. Indeed, the evolution of the C/N ratio, of the electrical conductivity, the phytotoxicity tests and the growth parameters of the composts show that the composts N°1 and N°2 are mature at the end of the 3rd month of composting while the compost N°3 can only be considered mature at the end of the 5th month of composting. But, with a yield of 2.39 ± 0.28 t/ha and a mass of 1000 grains of 346 ± 4 g, the treatment at 5 t/ha of compost N°3, has the best agronomic parameters compared to other types of compost and treatment without organic amendment. These results also show that compost with a high electrical conductivity has an inhibitory effect on the growth of corn plants (Zea mays L., var. IKENE). Basic chemical analysis, phytotoxicity tests and height growth of maize (Zea mays L., var. IKENE) are relatively efficient methods for evaluating the maturity of composts.

关键词： Compost Phytotoxicity Agronomic Parameters Growth maize (Zea mays L. var. IKENE)

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Impact of Urban Solid Waste on the Water of the Kpondjo River(Sokode,Togo)

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Journal of Civil Engineering and Architecture 2022年第5期16卷 263-269页

作者： nitale m.balikine krou Gnon Baba Laboratory for Sanitation Water Sciences and Environment(LSWSE) Faculty of Science and TechnologyUniversity of KaraP.O.BOX.297 KaraTogo

The main objective of the work is to search for relevant indicators for assessing the impact of waste on water quality and their contribution to climate change. The leaching test applied allowed accelerated access to the water-soluble material that can be mobilized in the various fractions of household and similar waste from the city of Sokodé, a material that can be salted out by leaching and leaching processes in nature. It has thus made it possible to evaluate the reactivity of the waste by promoting access to the composition and the quality of the released organic matter and to facilitate a follow-up of the recovery of the biological activity over a period of 120 hours. The study of physicochemical quality of the waters of Kpondjo River has shown a link between the deterioration of the quality of the river's water and the manner of waste management. The 17541 m3 of methane generated by sludge from slaughterhouses and fermentable fractions of solid waste, could contribute to climate change. Indeed, a composting valorization of biodegradable fraction of solid waste that is generated in this town would reduce the methane produced by this waste and thus help to reduce global warming trends.

关键词： Change climate leaching methane organic matter

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