Roy ED (2017) Phosphorus recovery and recycling with ecological engineering: a review. Ecol Eng
98:213–227
Schjonning P, Elmhol, S, Christensen BT (2004) Soil quality management–synthesis. In:
Schjonning P, Elmholt S, Christensen BT (eds) Managing soil quality: challenges in modern
agriculture. CABI Publishing, Wallingford, UK, pp 368
Schnug E, Jacobs F, Stöven K (2018) Guano: the white gold of the seabirds, seabirds, Heimo
Mikkola. IntechOpen, London. https://doi.org/10.5772/intechopen.79501. https://www.
intechopen.com/books/seabirds/guano-the-white-gold-of-the-seabirds
Sharma SB, Sayyed RZ, Trivedi MH, Gobi TA (2013) Phosphate solubilizing microbes: sustainable
approach for managing phosphorus deficiency in agricultural soils. SpringerPlus 2:587
Shinohara M, Aoyama C, Fujiwara K, Watanabe A, Ohmori H, Uehara Y, Takano M (2011)
Microbial mineralization of organic nitrogen into nitrate to allow the use of organic fertilizer in
hydroponics. Soil Sci Plant Nutr 57(2):190–203. https://doi.org/10.1080/00380768.2011.
554223
Singh R, Sharma RR, Kumar S, Gupta RK, Patil RT (2008) Vermicompost substitution influences
growth, physiological disorders, fruit yield and quality of strawberry (Fragaria ananassa
Duch.). Bioresour Technol 99:8507–8511
Singh R, Singh R, Soni S, Singh SP, Chauhan UK, Kalra A (2013) Vermicompost from
biodegraded distillation waste improves soil properties and essential oil yield of Pogostemon
cablin (patchouli) Benth. Appl Soil Ecol 70:48–56
Sinha RK, Herat S (2012) Organic farming: producing chemical-free, nutritive and protective food
for the society while also protecting the farm soil by earthworms and vermicompost – reviving
the dreams of sir Charles Darwin. Agricl Sci Resh J 25:217–239
Sinha RK, Agarwal S, Chauhan K, Valani D (2010) The wonders of earthworms and its
vermicompost in farm production: Charles Darwin’s ‘friends of farmers’, with potential to
replace destructive chemical fertilizers from agriculture. Agric Sci 1:76–94
Sinha RK, Hahn G, Singh PK, Suhane RK, Anthonyreddy A (2011) Organic farming by vermiculture: producing safe, nutritive and protective foods by earthworms (Charles Darwin’s Friends
of Farmers). Am J Exp Agric 1:363–399
Son JE, Okuya T (1991) Prediction of electrical conductivity of nutrient solution in hydroponics. J
Agric Meteorol 47(3):159–163
Song X, Liu M, Wu D, Griffiths BS, Jiao J, Li H, Hu F (2015) Interaction matters: Synergy between
vermicompost and PGPR agents improves soil quality, crop quality and crop yield in the field.
Appl Soil Ecol 89:25–34
Soni R, Sharma A (2016) Vermiculture technology: a novel approach in organic farming. Indian
Hortic J 6:150–154
Swati A, Hait S (2017) Fate and bioavailability of heavy metals during vermicomposting of various
organic waste—a review. Process Saf Environ Prot 109:30–45
Theunissen J, Ndakidemi PA, Laubscher CP (2010) Potential of vermicompost produced from plant
waste on the growth and nutrient status in vegetable production. Int J Phys Sci 5(13):1964–1973
Ukwattage NL, Ranjith PG, Bouazza M (2013) The use of coal combustion fly ash as a soil
amendment in agricultural lands (with comments on its potential to improve food security and
sequester carbon). Fuel 109:400–408
Van Kauwenbergh SJ (2010) World phosphate rock reserves and resources. International Fertilizer
Development Center (IFDC), Muscle Shoals, Alabama, USA
Verma S, Singh A, Pradhan SS, Singh RK, Singh JP (2017) Bio-efficacy of organic formulations on
crop production—a review. Int J Curr Microbiol Appl Sci 6(5):648–665
Watson CA, Atkinson D, Gosling P, Jackson LR, Rayns FW (2002) Managing soil fertility in
organic farming systems. Soil Use Manag 18:239–247
Wood’s End Research Laboratory (2005) Interpreting waste and compost tests. J Woods End Res
Lab 2(1):1–4. www.woodsend.org. Downloaded 19 Dec 2017
330
H. A. Mupambwa et al.
98:213–227
Schjonning P, Elmhol, S, Christensen BT (2004) Soil quality management–synthesis. In:
Schjonning P, Elmholt S, Christensen BT (eds) Managing soil quality: challenges in modern
agriculture. CABI Publishing, Wallingford, UK, pp 368
Schnug E, Jacobs F, Stöven K (2018) Guano: the white gold of the seabirds, seabirds, Heimo
Mikkola. IntechOpen, London. https://doi.org/10.5772/intechopen.79501. https://www.
intechopen.com/books/seabirds/guano-the-white-gold-of-the-seabirds
Sharma SB, Sayyed RZ, Trivedi MH, Gobi TA (2013) Phosphate solubilizing microbes: sustainable
approach for managing phosphorus deficiency in agricultural soils. SpringerPlus 2:587
Shinohara M, Aoyama C, Fujiwara K, Watanabe A, Ohmori H, Uehara Y, Takano M (2011)
Microbial mineralization of organic nitrogen into nitrate to allow the use of organic fertilizer in
hydroponics. Soil Sci Plant Nutr 57(2):190–203. https://doi.org/10.1080/00380768.2011.
554223
Singh R, Sharma RR, Kumar S, Gupta RK, Patil RT (2008) Vermicompost substitution influences
growth, physiological disorders, fruit yield and quality of strawberry (Fragaria ananassa
Duch.). Bioresour Technol 99:8507–8511
Singh R, Singh R, Soni S, Singh SP, Chauhan UK, Kalra A (2013) Vermicompost from
biodegraded distillation waste improves soil properties and essential oil yield of Pogostemon
cablin (patchouli) Benth. Appl Soil Ecol 70:48–56
Sinha RK, Herat S (2012) Organic farming: producing chemical-free, nutritive and protective food
for the society while also protecting the farm soil by earthworms and vermicompost – reviving
the dreams of sir Charles Darwin. Agricl Sci Resh J 25:217–239
Sinha RK, Agarwal S, Chauhan K, Valani D (2010) The wonders of earthworms and its
vermicompost in farm production: Charles Darwin’s ‘friends of farmers’, with potential to
replace destructive chemical fertilizers from agriculture. Agric Sci 1:76–94
Sinha RK, Hahn G, Singh PK, Suhane RK, Anthonyreddy A (2011) Organic farming by vermiculture: producing safe, nutritive and protective foods by earthworms (Charles Darwin’s Friends
of Farmers). Am J Exp Agric 1:363–399
Son JE, Okuya T (1991) Prediction of electrical conductivity of nutrient solution in hydroponics. J
Agric Meteorol 47(3):159–163
Song X, Liu M, Wu D, Griffiths BS, Jiao J, Li H, Hu F (2015) Interaction matters: Synergy between
vermicompost and PGPR agents improves soil quality, crop quality and crop yield in the field.
Appl Soil Ecol 89:25–34
Soni R, Sharma A (2016) Vermiculture technology: a novel approach in organic farming. Indian
Hortic J 6:150–154
Swati A, Hait S (2017) Fate and bioavailability of heavy metals during vermicomposting of various
organic waste—a review. Process Saf Environ Prot 109:30–45
Theunissen J, Ndakidemi PA, Laubscher CP (2010) Potential of vermicompost produced from plant
waste on the growth and nutrient status in vegetable production. Int J Phys Sci 5(13):1964–1973
Ukwattage NL, Ranjith PG, Bouazza M (2013) The use of coal combustion fly ash as a soil
amendment in agricultural lands (with comments on its potential to improve food security and
sequester carbon). Fuel 109:400–408
Van Kauwenbergh SJ (2010) World phosphate rock reserves and resources. International Fertilizer
Development Center (IFDC), Muscle Shoals, Alabama, USA
Verma S, Singh A, Pradhan SS, Singh RK, Singh JP (2017) Bio-efficacy of organic formulations on
crop production—a review. Int J Curr Microbiol Appl Sci 6(5):648–665
Watson CA, Atkinson D, Gosling P, Jackson LR, Rayns FW (2002) Managing soil fertility in
organic farming systems. Soil Use Manag 18:239–247
Wood’s End Research Laboratory (2005) Interpreting waste and compost tests. J Woods End Res
Lab 2(1):1–4. www.woodsend.org. Downloaded 19 Dec 2017
330
H. A. Mupambwa et al.