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All Journal Journal of Degraded and Mining Lands Management
Gina Aliya Sopha, Gina Aliya
Balai Penelitian Tanaman Sayuran
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Nutrient management of shallot (Allium cepa Aggregatum group) in Riau peatlands, a pot experiment Sopha, Gina Aliya; Aprianto, Fahmi
Journal of Degraded and Mining Lands Management Vol. 11 No. 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.112.5119

Abstract

Peatland degradation might affect peatland functions. Sustainable agriculture practice, i.e., nutrient management, is one of the efforts that could be made to delay the degradation. Therefore, this research aimed to identify the best nutrient management practice for shallot production in degraded peatlands. A split-plot experimental design was performed in a greenhouse environment, with cultivars (Sembrani and Trisula) as the main plot and eleven combinations of NPK fertilizer as the subplot. All treatments received 4.4 t ha-1 dolomite to increase the soil pH. Results showed that Sembrani produced a higher bulb yield than Trisula. Trisula was sensitive to acidic soils and failed to yield a high bulb. The NPK recommended dose for Sembrani was 150 kg N ha-1, 100 kg P2O5 ha-1, and 100 kg K2O ha-1, producing 57.50 g plant-1 equal to 14.4 t ha-1 or 53% higher than the control (without NPK). Meanwhile, growing Trisula was not recommended for peatlands.
Response of selected chemical properties of extremely acidic soils on the application of limes, rice husk biochar and zeolite Sopha, Gina Aliya; Hermanto, Catur; Kerckhoffs, Huub; Heyes, Julian A; Hanly, James
Journal of Degraded and Mining Lands Management Vol. 10 No. 1 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.101.4011

Abstract

Extremely acidic soils have low pH, high concentration of exchangeable Al3+ and low cation exchange capacity (CEC) that cause severe growth for most plants. The study was conducted in the soil laboratory of the Indonesian Vegetable Research Institute, Lembang, from June to August 2019. A randomised complete block design with seventeen treatments, three replications, and three incubation times (3, 30 and 60 days) was deployed to assess the effect of rates of soil amendments, namely 5 to 30 t  liming materials ha-1, 5 to 20 t rice husk biochar ha-1, and 5 to 20 t zeolite ha-1 on extremely acidic soils. The results showed that lime materials, i.e., lime, agriculture limestone, and hydrated lime had a similar effect on increasing soil pH and reducing exchangeable Al3+. Calcium super seemed more effective in increasing soil pH and reducing exchangeable Al3+ than local lime due to the high CCE value. However, there was no significant response to the highest rice husk biochar and zeolite rate on soil pH and exchangeable Al3+. Rice husk biochar increased the concentration of K+ and zeolite raised the concentration of Na+. However, the effect was minimal. About 3 t lime ha-1  or 2.5 t calcium super ha-1 or equivalent to 1.5 to 2 times exchangeable Al3+ is required to obtain the soil pH target of 4.8, where the exchangeable Al3+ was less than 0.5 cmol(+) kg-1.
Co-Authors Catur Hermanto Fahmi Aprianto, Fahmi Hanly, James Heyes, Julian A Kerckhoffs, Huub