The benefit of top soil and fertilizer mixture to improve the ex-coal mining land

Abstract

Abstract. Sopialena, Rosfiansyah, Sila S. 2017. The benefit of top soil and fertilizer mixture to improve the ex-coal mining land. Nusantara Bioscience 9: 36-43. The mining activities have led severe impacts on some environmental issues including a decrease in soil fertility, which affects the ability of soil to supply soil nutrients to growing plants, a destruction in soil structure, and the loss of microorganisms, which are important for reforming process to treat organic materials. In this regards, reclamation of mined degraded land has been continually used to improve soil structure and its microorganisms. In practice, for large scale reclamation, fertilizer use can primarily enhance soil qualities in improving plant's growth and yield. It is suggested that healthy soil should contain millions of microorganisms at the aggregation which leads to the improvement of soil nutrients and its structure, as the medium for plant growth. For this purpose, therefore, this study aimed to determine the impact of organic fertilizer (Ostindo) and top soil mixture on microbial diversity, soil fertility and the growth of sengon (Paraserianthes falcataria L. Nielsen). This study made use of a randomized block design, using four treatments and five replications including P0: without top soil and fertilizer, P1: with top soil but without fertilizer, P2: without top soil but with fertilizer, P3: mixture of top soil and fertilizer. The results showed that a mixture of top soil and fertilizer has successfully increased in the number of fungal genus, starting from two genus (Phytium and Penicillium) turning into five genus (Phytium, Fusarium, Penicillium, Aspergillus, and Rhizoctonia), as well as in the number of nematode genus, from two (Dorylaimus and Rhabditis) turning into five genus (Dorylaimus, Steinernema, Dorylaimus, Hoplolaimus, and Mononchus). This study indicated that the mixture has significantly improved soil health in ex-coal mining land, which was viable through the pH level (almost neutral), the significant increase of C, N and P 2 O 5 , and also the growth of Sengon. In conclusion, this study succeeds in demonstrating that the mixture of top soil and fertilizer has enhanced the microbial diversity, soil fertility, and sengon growth.

PENGARUH PENAMBAHAN TOP SOIL INCEPTISOL DAN KOMPOS PADA TAILING AMALGAMASI TERHADAP PANJANG SULUR, DIAMETER SULUR DAN JUMLAH CABANG TANAMAN UBI JALAR (Ipomoea batatas L.)

“…Pemberian topsoil Inceptisol dan kompos pada tailing merupakan upaya yang dilakukan untuk memperbaiki sifat dan kondisi tailing sehingga dapat sesuai untuk pertumbuhan tanaman. Penelitian sebelumnya yang dilakukan oleh Sopialena et al (2017) menyatakan bahwa penambahan campuran topsoil dan bahan organik pada lahan bekas tambang dapat meningkatkan pertumbuhan tanaman sengon, keragaman mikroba tanah dan kesuburan tanah, yaitu meningkatkan kandungan C, N, P2O5, dan pH tanah mendekati netral.…”

Ex-coal mine lands and their land suitability for agricultural commodities in South Kalimantan

“…The use of organic material can improve soil fertility of ex-coal mining land (Amelia and Suprayogo, 2018). Sopialena et al (2017) reported that mixing topsoil and fertilizer on ex-coal mine land increased microbial diversity, soil fertility, and plant growth. Hermawan (2011) reported that all soil physical and chemical variables have risen to levels suitable for food crops after being reclaimed for 12 years.…”

Effects of the planting of legume species and soil conditions on the recovery of a sand and pebble mining area

“…Topsoil accumulates biomass and large amounts of soil organic matter. Therefore, this type of substrate can act as a catalyst for the natural regeneration process (Merino‐Martín et al, 2017; Sopialena, Rosfiansyah, & Sila, 2017).…”

“…evaluated the efficiency of using topsoil deposition with the use of leguminous and grassy species as green manure. The authors concluded that the use of legumes and grasses in soil reconstituted with topsoil can be a viable technique to recover stripped and reconstituted soils, especially by increasing the organic carbon of the soil Sopialena et al (2017). also found satisfactory results regarding soil fertility and plant growth when combining topsoil application with fertilizer for improving soil conditions when restoring land damaged by coal mining.…”

“…Topsoil accumulates biomass and large amounts of soil organic matter. Therefore, this type of substrate can act as a catalyst for the natural regeneration process (Merino-Martín et al, 2017;Sopialena, Rosfiansyah, & Sila, 2017). Boruvka et al (2012) ascertained the effectiveness of topsoil in the recovery processes by comparing soil attributes under mined areas with and without application of topsoil on the degraded substrate.…”