Tjahyandari Suryaningtyas Dyah, Ghofar Abdul, Rosjidi Mochamad, Mustafa Anwar, Saputra Hens
Division of Physical Land Resource Development, Department of Soil Science and Land Resources, Faculty of Agriculture, IPB University, Bogor, Indonesia.
Center for Mine Reclamation Studies, International Research Institute for Environment and Climate Change, IPB University, Bogor, Indonesia.
ScientificWorldJournal. 2024 Nov 21;2024:5510660. doi: 10.1155/2024/5510660. eCollection 2024.
Plants require essential macronutrients such as nitrogen (N), phosphorus (P), and potassium (K), but their availability in soil is often inefficient due to evaporation, leaching, and binding. Controlled-release fertilizers (CRFs) provide a solution by regulating nutrient release over time. This study evaluates the effects of two coating materials, polyethylene glycol (PEG) and humic acid, on the release patterns of N, P, and K during an 18-week incubation using Inceptisol from Bogor, Indonesia. Various CRF treatments were tested, including uncoated (A1, A2), PEG-coated (B1, B2), and humic acid-coated (C1, C2) formulations. Results showed that CRF with PEG (B2) demonstrated slower N release, with ammonium levels decreasing from 32.22% in week 1 to 9.36% by week 18. Nitrate release increased steadily from 26.37% to 37.36% between weeks 3 and 18. In contrast, CRF with humic acid (C2) showed slower nitrate release, reaching 36.26% by the end of incubation. P release patterns were similar across treatments, while K release was lowest in the humic acid-coated treatment (C2) at 24.48%. These findings underline the potential of coating materials like PEG and humic acid to optimize nutrient release, enhancing agricultural efficiency.
植物需要氮（N）、磷（P）和钾（K）等必需的大量营养素，但由于蒸发、淋溶和结合作用，它们在土壤中的有效性往往较低。控释肥料（CRF）通过调节养分随时间的释放提供了一种解决方案。本研究评估了两种包膜材料，聚乙二醇（PEG）和腐殖酸，对印度尼西亚茂物始成土在18周培养期间氮、磷和钾释放模式的影响。测试了各种控释肥料处理，包括未包膜（A1、A2）、聚乙二醇包膜（B1、B2）和腐殖酸包膜（C1、C2）配方。结果表明，聚乙二醇包膜控释肥料（B2）的氮释放较慢，铵态氮水平从第1周的32.22%降至第18周的9.36%。硝态氮释放量在第3周和第18周之间从26.37%稳步增加到37.36%。相比之下，腐殖酸包膜控释肥料（C2）的硝态氮释放较慢，培养结束时达到36.26%。各处理的磷释放模式相似，而腐殖酸包膜处理（C2）的钾释放最低，为24.48%。这些发现强调了聚乙二醇和腐殖酸等包膜材料在优化养分释放、提高农业效率方面的潜力。
