[ Effets des doses de Tithonia diversifolia et de la chaux sur la croissance et la phytodisponibilité de cuivre sur la culture d’épinard Spinacia oleracea L cultivée à Lubumbashi (RD Congo) ]
Volume 49, Issue 2, July 2020, Pages 309–316
Ngoyi Nsomue Adolphe1 and Mpundu Mubambi Michel2
1 Université Notre Dame de Lomami, Faculté des Sciences Agronomiques, Département de Phytotechnie, RD Congo
2 Unité de Recherche Ecologie, Restauration Ecologique et Paysage, Université de Lubumbashi P.B 1825, Faculté des Sciences Agronomiques, Département de Phytotechnie, RD Congo
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The choice of suitable (nature and quantity) amendments and the selection of varieties capable of limiting the transfert from the soil to certain crop organs are among the classic methods in phytoremediation. This present work aims to assess the effect of doses of Tithonia diversifolia and lime on the behavior and phytoavailability of copper on spinash culture. The trial was set up using the fully randomized five repeat system. The treatments consisted of 6 doses compost and 6 doses of lime compared to the unamended contaminated or amended control. The observation focused on the vegetation parameters and submitted to the analysis of variance. Before the test, the pH and the copper content of the soils were determined. Soil analysis results show that their pH is close to neutral, while the copper concentration is 3332 ppm in Tshamilemba soil, is 148 times higher than that of experimental field soils. The high copper content of soil in the Tshamilemba district did not lead to a revival of spinash growth, on the other hand an increase in the phytoaviability of copper. The reduction in copper content depends on the doses of amendments applied. This article has shown that the addition of amendments makes it possible to reduce the bioaccumulation of contaminated soil to pratice market gardening.
Author Keywords: Amendments, phytoremediation, concentration, bioaccumulation, market gardening.
Volume 49, Issue 2, July 2020, Pages 309–316
Ngoyi Nsomue Adolphe1 and Mpundu Mubambi Michel2
1 Université Notre Dame de Lomami, Faculté des Sciences Agronomiques, Département de Phytotechnie, RD Congo
2 Unité de Recherche Ecologie, Restauration Ecologique et Paysage, Université de Lubumbashi P.B 1825, Faculté des Sciences Agronomiques, Département de Phytotechnie, RD Congo
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The choice of suitable (nature and quantity) amendments and the selection of varieties capable of limiting the transfert from the soil to certain crop organs are among the classic methods in phytoremediation. This present work aims to assess the effect of doses of Tithonia diversifolia and lime on the behavior and phytoavailability of copper on spinash culture. The trial was set up using the fully randomized five repeat system. The treatments consisted of 6 doses compost and 6 doses of lime compared to the unamended contaminated or amended control. The observation focused on the vegetation parameters and submitted to the analysis of variance. Before the test, the pH and the copper content of the soils were determined. Soil analysis results show that their pH is close to neutral, while the copper concentration is 3332 ppm in Tshamilemba soil, is 148 times higher than that of experimental field soils. The high copper content of soil in the Tshamilemba district did not lead to a revival of spinash growth, on the other hand an increase in the phytoaviability of copper. The reduction in copper content depends on the doses of amendments applied. This article has shown that the addition of amendments makes it possible to reduce the bioaccumulation of contaminated soil to pratice market gardening.
Author Keywords: Amendments, phytoremediation, concentration, bioaccumulation, market gardening.
Abstract: (french)
Le choix d’amendements (nature et quantités appropriées) et la sélection de variétés capables de limiter les transferts des éléments traces métalliques du sol vers certains organes de la plante font partie des méthodes les plus classiques en phytoremédiation. Le présent travail a pour objectif d’évaluer l’effet de doses de Tithonia diversifolia et de la chaux sur le comportement et la phytodisponibilité de cuivre sur la culture d’épinard. L’essai a été installé suivant un dispositif complètement randomisé à cinq répétitions. Les traitements ont été constitué de six doses de compost et six doses de la chaux comparés aux sols témoin contaminé non amendé et un témoin non contaminé ni amendé. Les observations ont porté sur les paramètres végétatifs et soumis à l’analyse de la variance. Avant essai, le pH et la teneur en Cuivre du sol ont été déterminés. Les résultats d’analyse des sols montrent que leur pH avoisine la neutralité alors que la concentration en Cuivre est de 3332 ppm dans les sols de Tshamilemba, est 148 fois plus élevée que celle des sols du champ expérimental. Les fortes teneurs en cuivre de sol du quartier Tshamilemba n’ont pas entrainé un ralentissement de croissance de l’épinard, par contre une augmentation de la phytodisponibilité du Cuivre. La réduction de teneur en cuivre est en fonction des doses d’amendements appliquées. Cet article a montré que l’apport des amendements permet de réduire la bioaccumulation du cuivre dans les plantes et permet d’envisager une remédiation de sol contaminé pour y pratiquer le maraichage.
Author Keywords: Amendement, phytoremédiation, concentration, bioaccumulation, maraichage.
How to Cite this Article
Ngoyi Nsomue Adolphe and Mpundu Mubambi Michel, “Effects of increasing doses of Tithonia diversifolia and lime on the growth and phytoavailability of copper on the Spinash culture cultivated in Lubumbashi (DR Congo),” International Journal of Innovation and Scientific Research, vol. 49, no. 2, pp. 309–316, July 2020.
