Akademik Veri Yönetim Sistemi
Journal of Soil Science and Plant Nutrition, 2024 (SCI-Expanded)
This study examined whether acidified rice husk biochar with phosphoric acid (ABc), could provide a highly effective and alternative source of phosphorus (P). Before starting the study, functional groups, and molecular structure of biochar, ABc, and triple super phosphate (TSP) were determined using scanning electron microscope (SEM), Raman Spectroscopy (RAMAN), and X-ray diffraction (XRD) techniques. Then, under greenhouse conditions, the effectiveness of ABc applied to spinach plants at doses of 0, 100, 200, and 400 mg P kg− 1 was compared with the equivalent amount of TSP. With the increasing doses of both P sources, the weight of the plants increased. In the control treatment, the plant P concentration was 1.77 g kg⁻¹. However, with increasing ABc treatments, it rose progressively to 3.38, 4.68, and 6.05 g kg⁻¹. These increases were significantly higher in ABc treatments compared to TSP. The calculated P use efficiency (PUE) was 3–4 times higher in ABc treatments than in TSP at each applied P dose. ABc treatments were more effective than TSP in terms of potassium (K), calcium (Ca), magnesium Mg), sulfur (S), silicon (Si), iron (Fe), and manganese (Mn) nutrition of the spinach plants. At the end of the experiment, the pH of the soil samples decreased from 8.19 to 7.77 with higher doses of ABc, and the plant-available P concentrations in the soil significantly increased with increased doses of ABc. Based on the results of this study, ABc, derived from waste material, has been identified as an alternative and sustainable P source.