Influence of ecologically relevant urea fertilizer concentrations on nematodes: A microcosm experiment
Aim of study: Urea remains one of the most widely used chemical fertilisers in the world and is used extensively in the Philippines as a major source of nitrogen for crops. However, we have a very limited understanding of its impact on soil fauna such as nematodes. In this study, we demonstrated th...
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| Format: | Article |
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Consejo Superior de Investigaciones Científicas (CSIC)
2025-01-01
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| Series: | Spanish Journal of Agricultural Research |
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| Online Access: | https://sjar.revistas.csic.es/index.php/sjar/article/view/20964 |
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| author | Rowena B. Caro-Benavides Ma. Reina Suzette B. Madamba Nanette Hope N. Sumaya Ruben F. Amparado, Jr Joey Genevieve T. Martinez |
| author_facet | Rowena B. Caro-Benavides Ma. Reina Suzette B. Madamba Nanette Hope N. Sumaya Ruben F. Amparado, Jr Joey Genevieve T. Martinez |
| author_sort | Rowena B. Caro-Benavides |
| collection | DOAJ |
| description |
Aim of study: Urea remains one of the most widely used chemical fertilisers in the world and is used extensively in the Philippines as a major source of nitrogen for crops. However, we have a very limited understanding of its impact on soil fauna such as nematodes. In this study, we demonstrated the suitability of the microcosm set-up to assess chemical effects on nematode communities under controlled conditions and determined the effects of urea on nematode communities.
Area of study: The soil samples were obtained from a relatively “less disturbed” field in Bukidnon, Central Mindanao and were taken for experimentation in a greenhouse at Premier Research Institute of Science and Mathematics (PRISM), Mindanao State University - Iligan Institute of Technology (MSU-IIT), Iligan City, Philippines.
Material and Methods: The soil was collected and analysed for its physiological properties. The soil was then exposed to urea concentrations (0 mg/kg, 19.67 mg/kg, 39.33 mg/kg and 78.66 mg/kg) in a microcosm for 45 days. Nematodes were then collected and processed using a modified dish method.
Main results: Firstly, the natural microcosms (without urea) showed that nematode abundance and the number of genera decreased by 28% and 35%, respectively. The results suggest that the current microcosm setup may still be useful in testing the effects of certain chemicals of interest. Secondly, no significant effects on the number of genera and diversity indices were observed with urea, except on the day 15 when nematode abundance was significantly higher at 39.33 mg/kg than at 19.67 mg/kg.
Research highlights: This study shows that the above ecologically relevant urea concentrations had no negative impact on nematode community structure during the 45-day exposure.
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| format | Article |
| id | doaj-art-be1489960e534a9d87187a57a757bb8e |
| institution | Kabale University |
| issn | 1695-971X 2171-9292 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Consejo Superior de Investigaciones Científicas (CSIC) |
| record_format | Article |
| series | Spanish Journal of Agricultural Research |
| spelling | doaj-art-be1489960e534a9d87187a57a757bb8e2025-01-31T10:29:48ZengConsejo Superior de Investigaciones Científicas (CSIC)Spanish Journal of Agricultural Research1695-971X2171-92922025-01-0122410.5424/sjar/2024224-20964Influence of ecologically relevant urea fertilizer concentrations on nematodes: A microcosm experimentRowena B. Caro-Benavides0Ma. Reina Suzette B. Madamba1Nanette Hope N. Sumaya2Ruben F. Amparado, Jr3Joey Genevieve T. Martinez4Department of Environmental Science. College of Forestry and Environmental Studies. Mindanao State UniversityMaguindanao. Datu Odin Sinsuat, 9601 Maguindanao, Philippines / Department of Biological Sciences. Mindanao State University - Iligan Institute of Technology (MSU-IIT). Bonifacio Avenue, Tibanga, 9200 Iligan City, PhilippinesDepartment of Biological Sciences. Mindanao State University - Iligan Institute of Technology (MSU-IIT). Bonifacio Avenue, Tibanga, 9200 Iligan City, Philippines / Premier Research Institute of Science and Mathematics (PRISM), Mindanao State University-Iligan Institute of Technology (MSUIIT). 9200 Iligan City, PhilippinesDepartment of Biological Sciences. Mindanao State University - Iligan Institute of Technology (MSU-IIT). Bonifacio Avenue, Tibanga, 9200 Iligan City, Philippines / Premier Research Institute of Science and Mathematics (PRISM), Mindanao State University-Iligan Institute of Technology (MSUIIT). 9200 Iligan City, PhilippinesPremier Research Institute of Science and Mathematics (PRISM), Mindanao State University-Iligan Institute of Technology (MSUIIT). 9200 Iligan City, Philippines / Graduate Program of Environmental Science, Department of Environmental Sciences, School of Interdisciplinary Studies, Mindanao State University-Iligan Institute of Technology (MSU-IIT), 9200, Iligan City, PhilippinesDepartment of Biological Sciences. Mindanao State University - Iligan Institute of Technology (MSU-IIT). Bonifacio Avenue, Tibanga, 9200 Iligan City, Philippines / Premier Research Institute of Science and Mathematics (PRISM), Mindanao State University-Iligan Institute of Technology (MSUIIT). 9200 Iligan City, Philippines Aim of study: Urea remains one of the most widely used chemical fertilisers in the world and is used extensively in the Philippines as a major source of nitrogen for crops. However, we have a very limited understanding of its impact on soil fauna such as nematodes. In this study, we demonstrated the suitability of the microcosm set-up to assess chemical effects on nematode communities under controlled conditions and determined the effects of urea on nematode communities. Area of study: The soil samples were obtained from a relatively “less disturbed” field in Bukidnon, Central Mindanao and were taken for experimentation in a greenhouse at Premier Research Institute of Science and Mathematics (PRISM), Mindanao State University - Iligan Institute of Technology (MSU-IIT), Iligan City, Philippines. Material and Methods: The soil was collected and analysed for its physiological properties. The soil was then exposed to urea concentrations (0 mg/kg, 19.67 mg/kg, 39.33 mg/kg and 78.66 mg/kg) in a microcosm for 45 days. Nematodes were then collected and processed using a modified dish method. Main results: Firstly, the natural microcosms (without urea) showed that nematode abundance and the number of genera decreased by 28% and 35%, respectively. The results suggest that the current microcosm setup may still be useful in testing the effects of certain chemicals of interest. Secondly, no significant effects on the number of genera and diversity indices were observed with urea, except on the day 15 when nematode abundance was significantly higher at 39.33 mg/kg than at 19.67 mg/kg. Research highlights: This study shows that the above ecologically relevant urea concentrations had no negative impact on nematode community structure during the 45-day exposure. https://sjar.revistas.csic.es/index.php/sjar/article/view/20964inorganic fertilisernematode community structurenematodes diversityurea |
| spellingShingle | Rowena B. Caro-Benavides Ma. Reina Suzette B. Madamba Nanette Hope N. Sumaya Ruben F. Amparado, Jr Joey Genevieve T. Martinez Influence of ecologically relevant urea fertilizer concentrations on nematodes: A microcosm experiment Spanish Journal of Agricultural Research inorganic fertiliser nematode community structure nematodes diversity urea |
| title | Influence of ecologically relevant urea fertilizer concentrations on nematodes: A microcosm experiment |
| title_full | Influence of ecologically relevant urea fertilizer concentrations on nematodes: A microcosm experiment |
| title_fullStr | Influence of ecologically relevant urea fertilizer concentrations on nematodes: A microcosm experiment |
| title_full_unstemmed | Influence of ecologically relevant urea fertilizer concentrations on nematodes: A microcosm experiment |
| title_short | Influence of ecologically relevant urea fertilizer concentrations on nematodes: A microcosm experiment |
| title_sort | influence of ecologically relevant urea fertilizer concentrations on nematodes a microcosm experiment |
| topic | inorganic fertiliser nematode community structure nematodes diversity urea |
| url | https://sjar.revistas.csic.es/index.php/sjar/article/view/20964 |
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