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EFFECTS OF SOIL SOLARIZATION ON FUNGAL AND BACTERIAL POPULATIONS ASSOCIATED WITH AMARANTHIS VIRIDIS L. (AFRICAN SPINACH) IN LAGOS, NIGERIA

  • O. T. Yahaya Department of Biology, Federal University Birnin Kebbi, PMB 1157, Birnin Kebbi, Nigeria
  • D. C. Obadiah Department of Biology, Federal University Birnin Kebbi, PMB 1157, Birnin Kebbi, Nigeria
  • O. E. Oladele Biology Unit, Distance Learning Institute, University of Lagos, Nigeria
  • C. Obi Department of Microbiology, Federal University Birnin Kebbi, Nigeria
  • O. J. Edache Department of Biology, National Open University of Nigeria, Lagos
  • J. A. Haruna Department of Biology, Federal University Birnin Kebbi, PMB 1157, Birnin Kebbi, Nigeria
  • F. D. Oripelaye Department of Biology, Federal University Birnin Kebbi, PMB 1157, Birnin Kebbi, Nigeria
Keywords: Amaranthus viridis, Environment, Pathogens, Polyethylene, Soil

Abstract

Soil solarization is increasingly used to control soil-borne pathogens because it is environment-friendly. However, performance varied geographically, necessitating experimental trials before its introduction. This study assessed the effects of solarization on soil-borne bacteria and fungi, growth, and proximate composition of Amaranthus viridis (African spinach) in Lagos, Nigeria. Two raised beds were solarized for six weeks with a transparent and black polyethylene sheet, and a non-solarized (control) bed was equally made. The vegetable seeds were planted and their growths were recorded for four weeks. Soil samples at 15-20cm deep and leaves were obtained for microbiological and proximate analysis, respectively. The mean temperature of transparent xxpolyethylene’s soil was 45.33 oC, black polyethylene (35 oC), and non-solarized (33.50 oC). The mean height and width of transparent polyethylene’s A. viridis were 24 and 3cm, black polyethylene (19 and 2.2 cm), and non-solarized (17 and 1.6cm). The transparent polyethylene’s soil had 3100 and 250 cfu/g bacterial and fungal colonies, black polyethylene (3200 and 1900 cfu/g), and non-solarized (37000 and 1900 cfu/g), respectively. The proximate contents of the transparent polyethylene’s A. viridis were (70 moisture, 10 ash, 4.24 protein, 1.45 fat and 9.94 % fibre), black polyethylene (73.35 moisture, 8.36 ash, 3.1% protein, 1.23 fat, and 6.77 % fibre), and non-solarized (76.09 moisture, 5.91 protein, 3.15 ash, 1.31 fat and 6.75 % fibre). Overall, statistical differences (p ≤ 0.05) existed between the solarized and non-solarized and between transparent and black polyethylene (transparent>black>non-solarized). Thus, solarization could be an effective strategy for controlling soil-borne bacteria and fungi of A. viridis in the area studied.

Published
2021-11-05
How to Cite
Yahaya, O. T., Obadiah, D. C., Oladele, O. E., Obi, C., Edache, O. J., Haruna, J. A., & Oripelaye, F. D. (2021). EFFECTS OF SOIL SOLARIZATION ON FUNGAL AND BACTERIAL POPULATIONS ASSOCIATED WITH AMARANTHIS VIRIDIS L. (AFRICAN SPINACH) IN LAGOS, NIGERIA. African Journal of Health, Safety and Environment, 2(2), 133 - 153. https://doi.org/10.52417/ajhse.v2i2.168