Agri Laboratory Association of Southern Africa (AgriLASA), (2004) Soil Handbook. Pretoria (South Africa): Agri Laboratory Association of Southern Africa. Pretoria, South Africa.
Bernal, M.P., Alburquerque, J., Moral, R., (2009). Composting of animal manures and biodiversity. Biodiversity and Conservation, 7, 419-433.
Hu, X., Huang, X., Zhao, H., Liu, F., Wang, Lu., Xin, Z., Pengcheng, Gao., Xiuying, Li., Puhui, J. (2020). Possibility of using modified fly ash and organic fertilizers for remediation of heavy-metal-contaminated soils. Journal of Cleaner Production.
Jain, M.S, Rohit, J, Ajay, S. K. (2018). Biochar amendment for batch composting of nitrogen rich organic waste: Effect on degradation kinetics, composting physics and nutritional chemical criteria for compost maturity assessment. A review. Bioresource of Technology, 22, 5444- 5453.
Katakula, A.A.N., Gawanab, W., Itanna, F.,Mupambwa, H.A. (2020). The potential fertilizer value of Namibian beach-cast seaweed (Laminaria pallida and Gracilariopsis funicularis) biochar as a nutrient source in organic agriculture. Scientific African, 10.e00592
Karwal, M., & Kaushik, A. (2020). Bioconversion of lawn waste amended with kitchen waste and buffalo dung in to value –added vermicompost using Eisenia foetida to alleviate landfill burden. Journal of Mater Cycles Waste Management.
Khan, M.B., Xiaoqiang, C., Ghulam, J., Ugit, L., Afsheen, Z., Yasir, H., Bilal, H., Lin, T., Xiaoe, Y, Zhenli, H. (2019) Eisenia fetida and biochar synergistically alleviate the heavy metals content during valorization of biosolids via enhancing vermicompost quality. Science of the Total Environment, 684: 597–609.
Kuo, S. (1996) Phosphorus. In Methods of Soil Analysis. Part 3 Chemical Methods (Sparks DL et al. Eds). Soil Science Society of America. Book Series No. 5: 869-912.
Li, Z., Huang, G., Yu, H., Yang. Z., Wendy, Huang. (2015).Critical factors and their effects on product maturity in food waste Composting. Environmental Monitoring and Assessment .
Lukashe, S.N., Mupambwa, H.A, Green, E, Mnkeni, P.N.S. (2019). Inoculation of fly ash amended vermicompost with phosphate solubilizing bacteria (Pseudomonas fluorescens) and its influence on vermi-degradation, nutrient release and biological activity. Waste Management .83: 14–22. https://doi.org/10. 1016/j.wasman.2018.10.038
Makini, G.V., Ndukhu, H.O., Muraya, M., Kirimi, I.M. (2020). Effects of goat manure-based vermicompost on soil chemical properties under garlic production in meru south and manyatta sub-counties. International Journal of Engineering Applied Sciences and Technology, 4: 91-99.
Mupambwa, H.A., & Mnkeni, P.N.S. (2015). Elemental composition and release characteristics of some South African fly ashes and their potential for land application, Archives of Agronomy and Soil Science, DOI: 10.1080/03650340.2015.1017567
Mupambwa, H.A., & Mnkeni, P.N.S. (2016). Eisenia fetida Stocking Density Optimization for Enhanced Bioconversion of Fly Ash Enriched Vermicompost. Journal of Environmental Quality, 45 (3), 1087-1095.
Mupambwa, H.A., Dube, E., Mnkeni, P.N.S. (2015) Fly ash composting to improve fertiliser value – A review. South African Journal Science. 111:1-6.
Mupambwa, H.A., Mnkeni, P.N.S. (2015). Optimization of fly ash incorporation into cow dung–waste paper mixtures for enhanced vermidegradation and nutrient release. Journal of Environmental Quality. 44:972–981.
Ravindran, B., Mnkeni, P.N.S. (2016). Bio-optimization of the carbon-to-nitrogen ratio for efficient vermicomposting of chicken manure and waste paper using Eisenia fetida. Environment of Science Pollution Resources. 23, 16965–16976. DOI 10.1007/s11356-016-6873-0
Schoenau, J.J.,O’Halloran, I.P. (2006). Sodium bicarbonate-extractable phosphorus, In:Carter,M.R.(Ed.),Soil Sampling and Methods of Analysis. 2nd edition Canadian Society of Soil Science, Canada, 89–95.
Sharma, K., Garg, V.K., (2020). Recycling of lignocellulosic waste as vermicompost using earthworm Eisenia fetida. Environment of Science pollution resources. 1–12. https://doi.org/10. 1007/s11356-019-04639-8
Simms, T., Chen, H., Mahato, G., (2020). Dope-depended Effect of Biochar as Soil Amendment on Reducing Copper Phytotoxicty and Mobility. International Journal of Environmental Resources.
Wang, H., Tianbao, R., Yuqing, F., Kouzhu , L., Huilin, F., Guoshun, L., Hongzhi, S. (2020). Effects of the Application of Biochar in Four Typical Agricultural Soils in China. Agronomy, 10, 351.
Were, S.A., Rama D.N., Janice, E. T., Eunice, W. M., James, W., Muthomi, L.M. Munyua, D.R., Bernard V. (2019). Effect of Vermicompost and Biochars from Different Crop Residues in Management of Root Rot of Common Bean (Phaseolus vulgaris L.) International Journal of Research in Agricultural Sciences , 6: 4, 2348 – 3997.
Zheng, G., Xiankai ,W.,Tongbin C., Jun, Y., Junxing, Y., Junwan, L., Xiaoxiao ,S. (2020). Passivation of lead and cadmium and increase of the nutrient content during sewage sludge composting by phosphate amendments. Environmental Research, 185: 109431.