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Mia, Shamim
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Biochar research advancement in Bangladesh: challenges and opportunities of biochar in improving soil health Baquy, M. Abdulaha-Al; Mamun, M. Abdullah Al; Mia, Shamim; Alam, Md. Mahedy; Khan, M. Shahadat Hossain; Rahman, Shah Moinur
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 19, No 2 (2022): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v19i2.59758

Abstract

Globally, biochar research and its application for soil improvement have attracted the interest of many researchers, primarily environmental and soil scientists, in the last decade. But, a limited number of biochar research studies have been conducted in Bangladesh. Therefore, a comprehensive study on biochar research is necessary to find out the scope and opportunities of biochar application in the soils of Bangladesh. Generally, biochar can improve the physical, chemical, and biological properties of soils. It also has a significant role in greenhouse gas emissions. The contaminated soils can also be remediated through the judicious application of biochar. In Bangladesh, biochar application enhanced soil pH, organic matter, phosphorus availability, and agricultural production while decreasing soil acidification, microbial activity, and heavy metals mobility. Besides that, there were both positive and negative findings regarding nitrogen availability, greenhouse gas emissions, and heavy metal accumulation. However, this review includes the selection of feedstock, the advancement of pyrolysis technology, the characterization of biochar, and the agronomic and environmental benefits of biochar use. This paper also reviews biochar study and application activities in Bangladesh over the last decade. Further research directions have been suggested to ensure the beneficial and safe application of biochar to agricultural property. 
Chemical modification of biochar’s functional groups enhances phosphate and arsenite adsorption Ahmed, Md Rayhan; Mia, Shamim; Sattar, Md. Abdus; Masud, M. M.; Alam, S. M. Mahabubul; Akter, Sohela; Mia, Md. Sharif; Aktar, Sanjida
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 22, No 1 (2025): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v22i1.92550

Abstract

Anionic arsenic (As) species and phosphate often show similar behavior in soils. Bioavailability of these anionic species has a significant implication for crop production and soil health. Biochar (BC) is considered an effective amendment for managing these anionic species. This study aims to evaluate how surface-modified biochars influence phosphate and arsenite adsorption. Biochars with a range of functionalities were produced using mineral doping, and chemical oxidation with hydrogen peroxide. These biochars were then characterized using different chemical techniques, including FTIR. Next, a phosphorus adsorption study was conducted with fresh, mineral-doped and chemically oxidized biochars. A desorption study was also conducted to understand the strength of sorption. Moreover, an adsorption study was carried out using three different biochars fresh, oxidized, and doped in interaction with As. Our results showed that chemical oxidation increased oxygen-containing functional groups while mineral impregnation decreased their presence, resulting in a reduction in cation exchange capacity. As a result, phosphate adsorption was significantly higher with mineral- doped biochar (2.5 mg g-1 biochar) than in fresh biochar (2.2 mg g-1 biochar) treatment. The strength of binding was higher for positively charged biochars. Similar to phosphate, the As adsorption was also higher in the doped biochar (~0.50 mg g-1 biochar) than oxidized biochar (0.20 mg g-1biochar). Surprisingly, the As adsorption was higher in the oxidized BC than fresh BC possibly due to its co-adsorption with cations. Altogether, our results suggest that biochar with positive surfaces could strongly bind negatively charged ions from aqueous solutions and soils.
Biochar-assisted nitrogen reduction improves resource efficiency at the expense of rice yield Lipi, Nowrose Jahan; Harun-Or- Rashid, Md.; Samanta, Swadesh Chandra; Maniruzzaman, Muhammad; Kader, Md. Abdul; Mia, Shamim
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 22, No 2 (2025): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v22i2.102413

Abstract

Nitrogen (N) is the most essential nutrient element for improving crop yield. However, urea, its most common form, is highly prone to losses, especially in flooded rice fields, which reduces N use efficiency (NUE) and contributes to environmental degradation. Here, a field experiment was conducted to examine the yield and growth performance of Aman rice, as well as to estimate NUE using different organic amendments and inorganic N sources. The treatments consisted of two factors: a) organic amendments- waste biochar, sawdust biochar, cow dung, and control, and b) N application rate- control (0), 50%, and 100% of the recommended rate. Overall, waste biochar performed better than sawdust and cow dung. Waste biochar with 100% of the recommended rate of urea application provided the highest grain (4.65 t ha-1) and straw yield (6.72 t ha-1). However, waste biochar with 50% recommended urea application provided the best NUE, i.e., agronomic N use efficiency (46 kg rice grain kg-1 N applied), physiological N use efficiency (28 kg rice grain kg-1 N uptake), and apparent N recovery (61%). The relatively higher NUE in treatments with organic amendments and half the recommended N rate; suggests a trade-off between improved NUE and rice grain yield. The enhanced NUE was possibly manifested by retaining more N in the reactive sites of soil organic matter and its uptake in the plant. Altogether, our results provide insights into NUE in rice cultivation systems after application of diverse organic matters. 
Oxidized alkaline biochar and phosphate solubilizing bacteria mixture enhances direct seeded maize yield in an acid soil Tusar, Hachib Mohammad; Uddin, Md. Kamal; Mia, Shamim; Kasim, Susilawati; Abd. Wahid, Samsuri Bin; Makino, Tomoyuki; Solaiman, Zakaria
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 21, No 2 (2024): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v21i2.93130

Abstract

Maize is an important cereal in many developed and developing countries of the world.  One of the primary challenges for maize cultivation is soil acidity. Acidic soil is a major constrain in achieving food security requiring sustainable solutions. Biochar, a pyrogenic carbon-rich material, carries reactive surfaces (i.e., high surface area and variable surface charges). Therefore, it facilitates nutrient retention in soil and gradual release to plants, thereby supporting crop growth. However, the combine effects of functionalized biochar with microbes on phosphorus (P) bioavailability and plant performance remain unclear. This study investigates the application of different oxidized biochars (i.e.,fresh rice husk biochar (RHB), pH adjusted oxidized RHB and control) and phosphate solubilizing bacteria (i.e., Pseudomonas aeruginosa, and control) on soil properties including phosphorus dynamics and the performance of maize grown in an acid soil.  Biochar was oxidized using 10% hydrogen peroxide while the pH was adjusted to 8.5. Maize was grown in pots having 20 kg of soil or soil-biochar mixture. Overall, biochar and microbes treatments increased soil phosphorus bioavailability and maize yield with a greater effects in the oxidized biochar giving a significant biochar × microbes interactions. Specifically, oxidized biochar when applied with Pseudomonas aeruginosa  increased P availability by 380 % which then contributed to yield increment (291%). We also observed a significant reduction in available aluminum (Al) concentration (40% ) compare to the control. These improvement in yield might have occurred due to an increase soil pH, P bioavailability (r2= 0.74), and a reduction in Al toxicity (r2= 0.36).Findings of this study could have significant implications for crop production in acidic soil.
Co-Authors Abd. Wahid, Samsuri Bin Ahmed, Md Rayhan Aktar, Sanjida Akter, Sohela Alam, Md. Mahedy Alam, S. M. Mahabubul Baquy, M. Abdulaha-Al Harun-Or- Rashid, Md. Kader, Md. Abdul Kasim, Susilawati Khan, M. Shahadat Hossain Lipi, Nowrose Jahan Makino, Tomoyuki Mamun, M. Abdullah Al Maniruzzaman, Muhammad Masud, M. M. Mia, Md. Sharif Rahman, Shah Moinur Samanta, Swadesh Chandra Sattar, Md. Abdus Solaiman, Zakaria Tusar, Hachib Mohammad Uddin, Md. Kamal