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All Journal SRIWIJAYA JOURNAL OF ENVIRONMENT Acta Solum
Paserena, Karinda Dwi
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Agriculture, Biological Sciences & Forestry Energy Environmental Science Public Health

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Diversity of Soil Insects in Coal Post Mining Land of PT. Bukit Asam Tbk in Tanjung Enim Paserena, Karinda Dwi; Damiri, Nurhayati; Setyawan, Dwi
Sriwijaya Journal of Environment Vol 9, No 1 (2024): Environment and Suistainable Development
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22135/sje.2024.9.1.11-17

Abstract

Coal mining activities carried out openly can have a negative impact on the environment. One of the environmental damages that occurs is the loss of habitat for soil-level insects. This research was conducted to identify the diversity of soil surface insect species in post-coal mining land of PT. Bukit Asam Tbk Tanjung Enim IUP Banko Barat at various ages of reclamation. Soil surface insect samples were collected using the pitfall trap method which was carried out for 1x24 hours. The results showed that the highest presence of soil surface insect species occurred in aged 6 years with a total of 128 individuals and was dominated by the order Hymenoptera. The species diversity index in post-coal mining land aged 6 years, namely 1.51, is classified as moderate. The lowest presence of soil surface insects occurred in aged 2 years with a total of 24 individuals. The species diversity index in post-coal mining land aged 2 years, namely 0.85, is relatively low. Thus, the research results show that the diversity of surface soil insects is influenced by the age of reclamation. The longer the land is managed, the higher the index of diversity of soil surface insect species in post-coal mining land.
The Effect of Liquid Organic Fertilizer from Tofu Factory and Local Microorganisms from Banana Stems of Ultisols Aidil Fitri, Siti Nurul; Napoleon, Adipati; Hermawan, Agus; Bakri, Bakri; Paserena, Karinda Dwi; Pratama, Moch Aziz
Acta Solum Vol. 4 No. 1 (2025): November 2025
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v4i1.3523

Abstract

Ultisol is a type of soil that requires processing before agricultural activities can be carried out due to its acidic pH and low nutrient content, necessitating proper treatment. Processing that can be done is by applying liquid organic fertilizer to Ultisol, as it provides nutrients according to plant needs and increases soil fertility. This study aims to understand the effect of the application of liquid organic fertilizer from tofu factory waste and local microorganisms from banana stems on N, P, K, and soil C/N ratio in Ultisols, and find out the best dosage of liquid organic fertilizer from tofu factory waste in increasing Soil N, P, K values ​​and C/N ratio in Ultisols. This research activity started from July to September 2024. This study employed a Completely Randomized Design (CRD) with 6 treatments and 4 replicates, resulting in 24 experimental units. The results showed that the liquid organic fertilizer treatment had a significant effect on available K levels and had no significant effect on total N, available P, and the C/N ratio of the soil in Ultisols. The best value obtained in the liquid organic fertilizer treatment was at a dose of 500 ml, which had an total N value of 0.19%, available P of 24.26 mg kg-1, available K of 1.60 cmol kg-1, and a soil C/N ratio of 15.27. Based on this research, it is suggested that to increase the availability of N, P, and K soil nutrients, it is necessary to provide liquid organic fertilizers with inorganic N, P, and K fertilizers.
Co-Authors Adipati Napoleon Agus Hermawan Bakri Bakri Dwi Setyawan Nurhayati Damiri Pratama, Moch Aziz Siti Nurul Aidil Fitri, Siti Nurul