Kirchmann H, Thorvaldsson G, Bergstrom L, Gerzabek M, Andrén O, Eriksson L, Winninge M
(2008) Fundamentals of organic agriculture—past and present. In: Kirchmann H, Bergström L
(eds) Organic crop production—ambitions and limitations. Springer, Dordrecht, pp 13–38
Koelsch R (2017) What is the economic value of manure. University of Nebraska. http://www.
water.unl.edu. Accessed 15 Jul 2018
Krishnasamy K, Nair J, Bauml B (2012) Hydroponic system for the treatment of anaerobic liquid.
Water Sci Technol 65(7):1164–1171
Kumar V, Singh KP (2001) Enriching vermicompost by nitrogen fixing and phosphate solubilizing
bacteria. Bioresour Technol 76:173–175
Kumari MSS, Ushakumari K (2002) Effect of vermicompost enriched with rock phosphate on the
yield and uptake of nutrients in cowpea (Vigna unguiculata. Walp). J Trop Agric 40:27–30
Kumari A, Kapoor KK, Kundu BS, Mehta RK (2008) Identification of organic acids produced
during rice straw decomposition and their role in rock phosphate solubilization. Plant Soil
Environ 54(2):72–77
Latique S, Halima C, Mounir M, El K (2013) Seaweed liquid fertilizer effect on physiological and
biochemical parameters of bean plant (Phaesolus vulgaris var Paulista) under hydroponic
system. Eur Sci J 9(30)
Lavison RK (2013) Factors influencing the adoption of organic fertilizers in vegetable production in
Accra. MPhil thesis, University of Ghana
Lehmann J, Gaunt J, Rondon M (2006) Bio-char sequestration in terrestrial ecosystems–a review.
Mitig Adapt Strat Glob Change 11:403–427. https://doi.org/10.1007/s11027-005-9006-5
Lim SL, Wu TY, Lim PN, Shak KPY (2014) The use of vermicompost in organic farming:
overview, effects on soil and economics. J Sci Food Agric 95:1143–1156
Liu WK, Yang QC, Lian Feng D, Cheng RF, Zhou WL (2011) Nutrient supplementation increased
growth and nitrate concentration of lettuce cultivated hydroponically with biogas slurry. Acta
Agric Scand Sec B Soil Plant Sci 61(5):391–394. https://doi.org/10.1080/09064710.2010.
482539
Loss A, da Rosa Couto R, Brunetto G, da Veiga M, Toselli M, Baldi E (2019) Animal manure as
fertilizer: changes in soil attributes, productivity and food composition. Int J Res Granthaalayah
7(9):307–331
Lotter DW (2003) Organic agriculture. J Sustain Agric 21(4):59–128
Lukashe NS, Mupambwa HA, Green E, Mnkeni PNS (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 Manag 83:14–22
Malik A, Thapliyal A (2009) Eco-friendly fly ash utilization: potential for land application. Crit Rev
Environ Sci Technol 39(4):333–366
Malinska K, Golanska M, Caceres R, Rorat A, Weisser P, Slezak E (2017) Biochar amendment for
integrated composting and vermicomposting of sewage sludge—the effect of biochar on the
activity of Eisenia fetida and the obtained vermicompost. Bioresour Technol 225:206–214
Manivannan S, Balamurugan K, Parthasarathi K, Gunasekaran G, Ranganathan LS (2009) Effect of
vermicompost on soil fertility and crop productivity – Beans (Phaseolus vulgaris). J Environ
Biol 30:275–281
Masunga RH, Uzokwe VN, Mlaya PD, Odeh I, Singh A, Buchan D, De Neve S (2016) Nitrogen
mineralization dynamics of different valuable organic amendments commonly used in agriculture. Appl Soil Ecol 101:185–193
Mdolo P (2016) Sewage sludge and municipal waste: potential sources of phosphorus for land
restoration. United Nations University Land Restoration Training Programme [final project].
http://www.unulrt.is/static/fellows/document/Mdolo2016.pdf
Mihreteab HT, Ceglie FG, Aly A, Tittarelli F (2016) Rock phosphate enriched compost as a growth
media component for organic tomato (Solanum lycopersicum L.) seedlings production. Biol
Agric Hort 32(1):7–20
Mnkeni PNS, Austin A, Kutu FR (2005) Preliminary studies on the evaluation of human urine as a
source of nutrients for vegetables in the Eastern Cape Province, South Africa. In: Ecological
328
H. A. Mupambwa et al.
(2008) Fundamentals of organic agriculture—past and present. In: Kirchmann H, Bergström L
(eds) Organic crop production—ambitions and limitations. Springer, Dordrecht, pp 13–38
Koelsch R (2017) What is the economic value of manure. University of Nebraska. http://www.
water.unl.edu. Accessed 15 Jul 2018
Krishnasamy K, Nair J, Bauml B (2012) Hydroponic system for the treatment of anaerobic liquid.
Water Sci Technol 65(7):1164–1171
Kumar V, Singh KP (2001) Enriching vermicompost by nitrogen fixing and phosphate solubilizing
bacteria. Bioresour Technol 76:173–175
Kumari MSS, Ushakumari K (2002) Effect of vermicompost enriched with rock phosphate on the
yield and uptake of nutrients in cowpea (Vigna unguiculata. Walp). J Trop Agric 40:27–30
Kumari A, Kapoor KK, Kundu BS, Mehta RK (2008) Identification of organic acids produced
during rice straw decomposition and their role in rock phosphate solubilization. Plant Soil
Environ 54(2):72–77
Latique S, Halima C, Mounir M, El K (2013) Seaweed liquid fertilizer effect on physiological and
biochemical parameters of bean plant (Phaesolus vulgaris var Paulista) under hydroponic
system. Eur Sci J 9(30)
Lavison RK (2013) Factors influencing the adoption of organic fertilizers in vegetable production in
Accra. MPhil thesis, University of Ghana
Lehmann J, Gaunt J, Rondon M (2006) Bio-char sequestration in terrestrial ecosystems–a review.
Mitig Adapt Strat Glob Change 11:403–427. https://doi.org/10.1007/s11027-005-9006-5
Lim SL, Wu TY, Lim PN, Shak KPY (2014) The use of vermicompost in organic farming:
overview, effects on soil and economics. J Sci Food Agric 95:1143–1156
Liu WK, Yang QC, Lian Feng D, Cheng RF, Zhou WL (2011) Nutrient supplementation increased
growth and nitrate concentration of lettuce cultivated hydroponically with biogas slurry. Acta
Agric Scand Sec B Soil Plant Sci 61(5):391–394. https://doi.org/10.1080/09064710.2010.
482539
Loss A, da Rosa Couto R, Brunetto G, da Veiga M, Toselli M, Baldi E (2019) Animal manure as
fertilizer: changes in soil attributes, productivity and food composition. Int J Res Granthaalayah
7(9):307–331
Lotter DW (2003) Organic agriculture. J Sustain Agric 21(4):59–128
Lukashe NS, Mupambwa HA, Green E, Mnkeni PNS (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 Manag 83:14–22
Malik A, Thapliyal A (2009) Eco-friendly fly ash utilization: potential for land application. Crit Rev
Environ Sci Technol 39(4):333–366
Malinska K, Golanska M, Caceres R, Rorat A, Weisser P, Slezak E (2017) Biochar amendment for
integrated composting and vermicomposting of sewage sludge—the effect of biochar on the
activity of Eisenia fetida and the obtained vermicompost. Bioresour Technol 225:206–214
Manivannan S, Balamurugan K, Parthasarathi K, Gunasekaran G, Ranganathan LS (2009) Effect of
vermicompost on soil fertility and crop productivity – Beans (Phaseolus vulgaris). J Environ
Biol 30:275–281
Masunga RH, Uzokwe VN, Mlaya PD, Odeh I, Singh A, Buchan D, De Neve S (2016) Nitrogen
mineralization dynamics of different valuable organic amendments commonly used in agriculture. Appl Soil Ecol 101:185–193
Mdolo P (2016) Sewage sludge and municipal waste: potential sources of phosphorus for land
restoration. United Nations University Land Restoration Training Programme [final project].
http://www.unulrt.is/static/fellows/document/Mdolo2016.pdf
Mihreteab HT, Ceglie FG, Aly A, Tittarelli F (2016) Rock phosphate enriched compost as a growth
media component for organic tomato (Solanum lycopersicum L.) seedlings production. Biol
Agric Hort 32(1):7–20
Mnkeni PNS, Austin A, Kutu FR (2005) Preliminary studies on the evaluation of human urine as a
source of nutrients for vegetables in the Eastern Cape Province, South Africa. In: Ecological
328
H. A. Mupambwa et al.