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All Journal Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal Agrotek Lestari
Veronica, Stevany
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Agriculture, Biological Sciences & Forestry Environmental Science

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Analisis Sifat Kimia Ultisol Setelah Pemberian Kompos Solid dan Fly Ash Batubara Idwar; Nelvia; Irfandri; Lubis, Nursiani; Veronica, Stevany
Jurnal Ilmu Tanah dan Lingkungan Vol 27 No 1 (2025): Journal of Soil Science and Environment
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.27.1.1-6

Abstract

This study aimed to evaluate the effects of applying solid compost and coal fly ash on the improvement of Ultisol chemical properties and to determine the optimal dosage for its application. Ultisol, known for its high acidity, low organic matter content, and limited nutrient availability, requires specific amendments for optimization. The study was conducted using a factorial completely randomized design (CRD) with 12 treatment combinations: four levels of solid compost (0 t.ha-1, 2,5 t.ha-1, 5 t.ha-1 dan 7,5 t.ha-1) and three levels of fly ash (0 t.ha-1, 3 t.ha-1 and 6 t.ha-1), each with three replications. The soil that has been treated is incubated for two weeks, then the chemical properties of the soil are analyzed. The results showed that the combination of solid compost and fly ash significantly improved Ultisol chemical properties, including increasing soil pH, reducing Al-dd levels, and enhancing P-available, organic carbon (organic C), total nitrogen (total N), cation exchange capacity (CEC), and total potassium (total K). The combination of 7,5 t.ha-1 solid compost and 6 t.ha-1 fly ash provided the best results, achieving a soil pH of 5.15, an increase available P to 23.7 ppm, and a high CEC level. This combination effectively improved Ultisol quality, making it more supportive for plant growth.
Pertumbuhan dan Hasil Padi Gogo (Oryza sativa L.) Pada Medium Podsolik (Ultisol) dengan Pemberian Kompos Solid dan Fly Ash Batu Bara Lubis, Nursiani; Veronica, Stevany; Nelvia, Nelvia; Idwar, Idwar; Irfandri, Irfandri
Jurnal Agrotek Lestari Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jal.v11i2.12864

Abstract

This research was conducted with the aim of studying the effect of the interaction of solid compost with coal fly ash and each treatment, as well as to obtain the best dose in increasing the growth and yield of upland rice plants (Oryza sativa L.) on Podsolic medium (Ultisol). The study used an experimental method with a completely randomized design (CRD) factorial of two factors, namely the provision of solid compost (0; 2.5; 5; and 7.5 t.ha-¹) and coal fly ash (0; 3; and 6 t.ha-¹) so that 12 treatment combinations were obtained with three replications, totaling 36 experimental units. The soil used was Ultisol soil from Batu Belah Village, Kampar. Observations included growth parameters and yields of upland rice plants of the Inpago 12 variety which included: plant height, maximum and productive number of tillers, panicle emergence age, harvest age, number and percentage of full grain, weight of 1,000 full grain grains, and weight of dry milled grain per clump. The research data were analyzed using analysis of variance (ANOVA) and continued with the Duncan Multiple Range Test (DMRT) at the 5% level. The study showed that there was no interaction between solid compost and coal fly ash on the growth and yield of upland rice (Oryza sativa L.) on Podsolic soil (Ultisol). Solid compost significantly affected several parameters such as plant height, panicle emergence age, harvest age, percentage of full grain, weight of 1000 full grain grains, and weight of dry milled grain per clump with the best dose of 5 t.ha-¹. On the other hand, coal fly ash did not show any significant effect on all observed parameters. Therefore, solid compost at a dose of 5 t.ha-¹ is recommended to increase the growth and yield of upland rice variety Inpago 12 on Podsolic soil (Ultisol).  
Co-Authors Idwar Idwar, Idwar Irfandri Irfandri, Irfandri Lubis, Nursiani Nelvia Nelvia