Sawdust as an Organic Amendment on Uptake of Herbicide Residues by Amaranthus dubius in Contaminated Soil

Document Type : Research Article


1 Department of Environmental Management Technology, ATBU, Bauchi, Nigeria.

2 Federal College of Forest Resource Management, Maiduguri, Nigeria


Herbicide use and varieties have greatly risen during the past few years. As a result of this, concern over potential health effects such cancer, birth deformities, reproductive issues, tumours, and harm to the liver, kidneys, and nervous system is on the rise. This has an impact on the environment because the misuse of herbicides contaminates the soil, water, and air; harming the local ecology and other living things vital to preserving ecological balance. This study investigated the effect of sawdust as an organic amendment on mobility of herbicides residues in contaminated soil, in which Chinese Spinach (Amaranthus dubius) was grown. Sawdust of Doka (Isoberlinia doka), African Mahogany (Khaya senegalensis) and Beach Wood (Gmelina arborea), were used in a randomized complete block design. A composite sample of topsoil (110 kg) and sawdust compost (10kg) was used. 120kg of topsoil without sawdust compost was also used as control. Amaranthus dubius was planted in the potted mixtures and 120ml of herbicide (Glyphosate 41% SL) was diluted with 5 litres of water and was applied to all treatment at an equal rate after sowing. Gas Chromatography Mass Spectroscopy (GCMS) analysis of the active ingredient in the glyphosate 41% SL indicated that the quantity of Isopropylamine was 34.093ppm. The highest mean of Isopropylamine (32.75ppm) was found in the control treatment without sawdust amendment, as compared with other samples. The chemical herbicide was detected, at negligible rates, in Amaranthus dubius grown in the soil amended with Gmelina arborea (10.49ppm) and Khaya Senegalensis (8.93ppm). The concentrations in Amaranthus dubius from the two amended soils were significantly lower than that of the control (22.56ppm) without compost treatment. However, no herbicide was detected in the vegetable raised on soils amended with compost made from Isoberlina doka specie.


Main Subjects

  1. G. Kughur, The effects of herbicides on crop production and environment in Makurdi Local Government Area of Benue State, Nigeria. Journal of sustainable Development in Africa, 14 (2012), 433-456.
  2. Moss, (2019). Integrated weed management (IWM): why are farmers reluctant to adopt nonā€chemical alternatives to herbicides?. Pest management science, 75 (2019) 1205-1211.
  3. Clapp, Explaining growing glyphosate use: The political economy of herbicide-dependent agriculture. Global Environmental Change, 67 (2021) 102239.
  4. Sarker, T. Islam, S. Rahman, R. Nandi, J. E. Kim, Uncertainty of pesticides in foodstuffs, associated environmental and health risks to humans—a critical case of Bangladesh with respect to global food policy. Environmental Science and Pollution Research, 28 (2021), 54448-54465.
  5. O. Uddin, E. M. Igbokwe, I. A. Enwelu, I. A. (2015). Knowledge and Practices of Herbicide Use Among Farmers in Edo State, Nigeria.
  6. Mekonnen T. Agonafir. “Pesticide sprayers’ knowledge, attitude and practice of pesticide use on agricultural farms of Ethiopia,” Society of Occupational Medicine, 52 (2012) 311–315.
  7. V. Barbieri, A. Peris, C. Postigo, A. Moya-Garcés, L. S. Monllor-Alcaraz, M. Rambla-Alegre, M., M. L. de Alda, Evaluation of the occurrence and fate of pesticides in a typical Mediterranean delta ecosystem (Ebro River Delta) and risk assessment for aquatic organisms. Environmental Pollution, 274 (2021) 115813.
  8. Amoatey, M. S. Baawain, Effects of pollution on freshwater aquatic organisms. Water Environment Research, 91 (2019) 1272-1287.
  9. Ali, M. I. Ullah, A. Sajjad, Q. Shakeel, & A. Hussain, (2021). Environmental and health effects of pesticide residues. In Sustainable Agriculture Reviews 48 (pp. 311-336). Springer, Cham.
  10. W. Wongwichit G. Siriwong, M. G. Mark, M. G. Robson. (2012). “Herbicide exposure to maize farmers in northern Thailand: knowledge, attitude, and practices. Journal of Medicine and Medical Sciences, Vol. 3 (1), 034-038,
  11. E. Awokunmi, E. E. Impact of saw dust application on the distribution of potentially toxic metals in contaminated soil. Bulletin of environmental contamination and toxicology, 99 (2017) 765-770.
  12. Beesley, O. S. Inneh, G. J. Norton, E. Moreno-Jimenez, T. Pardo, R. Clemente, J. J. Dawson, Assessing the influence of compost and biochar amendments on the mobility and toxicity of metals and arsenic in a naturally contaminated mine soil. Environmental Pollution, 186 (2014) 195-202.
  13. Grey, B. Nguyen, P. Yang, Liquid chromatography–electrospray ionization isotope dilution mass-spectrometry analysis of paraquat and diquat in crops using conventional and multilayer solidphase extraction cartridges. J. Chromatogr. A. 958 (2002) 25-33.
  14. Ouyang, R. S. Mansell, P. Nkedi-Kizza, A simple high performance liquid chromatography method for analyzing paraquat in soil solution samples. J. Environ. Qual. 33 (2004) 406-408.
  15. Siadati, M. Amin, M. Meghdad, A. Beheshti, Development and validation of a short runtime method for separation of trace amounts of 4-aminophenol, phenol, 3-nitrosalicylic acid and mesalamine by using HPLC system. Current Chemistry Letters, 10 (2021) 151-160.
  16. Horisawa, M. Sunagawa, Y. Tamai, Y. Matsuoka, T. Miura, M. Terazawa, Biodegradation of nonlignocellulosic substances II: physical and chemical properties of sawdust before and after use as artificial soil. Journal of wood science, 45(1999) 492-497.
  17. M. Satchivi, L. M., Wax, E. W. Stoller, E. D. P. Briskin Absorption and translocation of glyphosate isopropylamine and trimethylsulfonium salts in Abutilon theophrasti and Setaria faberi. Weed Science, 48 (2000) 675-679.
  18. F. Mendes, A. F. D. Júnior, V. Takeshita, A. Régo, V> L. Tornisielo, Effect of biochar amendments on the sorption and desorption herbicides in agricultural soil. In Advanced sorption process applications (pp. 87-104). IntechOpen. (2018).
  19. Food and Drug Administration, & Code, F. F. (2013). Silver Spring, MD: US Department of Health and Human Services. Food and Drug Administration.
  20. Erban, M. Stehlik, B. Sopko, M. Markovic, M. Seifrtova, T. Halesova, & P. Kovaricek, The different behaviors of glyphosate and AMPA in compost-amended soil. Chemosphere, 207 (2018) 78-83.
  21. Bryndina, L. V., & Baklanova, O. V. (2021). Restoration of Soil from Herbicide Pollution using Biochar from Sewage Sludge and Sawdust. Ecology and Industry of Russia, 25 (2008) 32-37.
  22. Bello, C. Trasar-Cepeda, M. C. Leirós, & F. Gil-Sotres, Evaluation of various tests for the diagnosis of soil contamination by 2, 4, 5-trichlorophenol (2, 4, 5-TCP). Environmental Pollution, 156(3), 611-617.
  23. Bello, C. Trasar-Cepeda, M. C. Leirós, F. GilSotres, Evaluation of various tests for the diagnosis of soil contamination by 2,4,5 trichlorophenol (2,4,5-TCP). Environmental Pollution. 156 (2008) 611–617.
  24. Dommergues, F. Mangenot, Ecologie microbienne du sol. Masson Editorial, Paris, France. (1970).