Rosazlin Abdullah

University of Malaya | UM · Institute of Biological Sciences

Pemeliharaan tanah di dalam hutan merupakan komponen penting kerana kesuburan tanah berkait rapat dengan kesesuaian pokok di samping dapat menghasilkan pokok-pokok yang bermutu tinggi. Tanah terbentuk daripada proses luluhawa sejak berjuta-juta tahun dahulu dan terdapat banyak jenis tanah yang terbentuk di muka bumi dengan mempunyai pelbagai ciri t...

Mycoprotein is a nutritious food product derived from fungi that boasts a high protein content, low fat, and substantial fiber, mimicking the texture of meat. It contains essential amino acids (EAA), vitamins, and minerals. Traditionally, it is produced through the fermentation of glucose derived from starch in controlled bioreactors, where pH, tem...

Purpose Biofertilizer application in the agriculture industries is deemed sustainable in the long run given its ability to restore fertility of soil and increase crops productivity through several direct and indirect mechanisms. However, the dissolved fraction (DOM), which is made up of tiny molecules of plant and microbial origin produced by lyse...

Soil salinization is a major problem affecting agriculture globally. One approach to restore saline soil is through the application of biochar which is great at adsorbing salt ions and thus amending salt-affected soils. Biochar produced using forestry wastes (Gigantochloa levis and Melaleuca cajuputi) were pyrolyzed at 300, 450 and 600 ℃ for 2 h. P...

Biofertilizers encompass microorganisms that can be applied to plants, subsequently establishing themselves within the plant's rhizosphere or internal structures. This colonization stimulates plant development by enhancing nutrient absorption from the host. While there is growing literature documenting the applications of microalgae-based and bacte...

This study was conducted to characterize the different pyrolysis temperature of biochar from tropical bamboo spesies Gigantochloa levis and its potential as sodium sorption. The prepared biochar was produced by Gigantochloa levis which is pyrolyzed at 300 ℃, 450 ℃ and 600 ℃ for 2 hours. Proximate and ultimate analyses were done following physical a...

Hydroponic is a technique of growing plants in a soilless medium by using a sponge, rock wool, hydroton, coconut coir, and perlite as an alternative for crop production systems. Recently, biochar has been reported to be a potential substrate for hydroponic cultivation techniques due to its physicochemical properties which can help increase vegetabl...

The use of gas chromatography–mass spectrometry (GC–MS) and multivariate statistics of principal component analysis (PCA) for metabolomics profiling of non-infected and Ganoderma boninense (G. boninense) infected oil palm rachises crude extracts grown on tropical soils have been evaluated. This combination has allowed us to quickly investigate the...

Biochar has various agricultural applications, including the promising use as a carrier for beneficial microorganisms. However, most recent research has demonstrated the possible attachment or immobilization of a single bacterial species onto biochar rather than a consortium of microbes for biotechnological applications. Thus, an assessment on the...

Hutan Rimba Alam (HRA), Putrajaya is an urban forest that is the habitat for various tropical rainforest species. A field survey was undertaken to state the floristic composition, investigate the soil characteristics and identify the relationship between the recorded plant communities and soil characteristics. Six plots sized 10 × 10 m square were...

Sustainable urban farming is a strategy to improve food availability and food access, and to support food security for the urban population in Malaysia. However, the development of these activities has been affected by several constraints. This article aims to identify the challenges faced by urban farmers in Kuala Lumpur. The challenges of practic...

The oil palm kernel shell biochar (OPKS-B) and oil palm kernel shell activated carbon (OPKS-AC) were used as a framework to entrap urea using adsorption method. Batch adsorption studies were performed to gauge the influence of contact time on the adsorption of urea onto both OPKS-B and OPKS-AC. To evaluate the physicochemical traits of the studied...

Sustainable urban farming is a strategy to improve food availability and food access, and to support food security for the urban population in Malaysia. However, the development of these activities has been affected by several constraints. This article aims to identify the challenges faced by urban farmers in Kuala Lumpur. The challenges of practic...

As the world's population grows, it is necessary to rethink how countries throughout the world produce food in order to replace the conventional and unsustainable agricultural techniques. Microalgae cultivation using a nutrient-rich solution from hydroponic systems not only presents a novel approach to solving problems pertaining to the impact of t...

Bacillus salmalaya 139SI and Lactobacillus sp. isolated from Kerinci buffalo milk yogurt were investigated for their potential probiotics properties. Three isolates from the milk yogurt were identified as L. plantarum 1, L. plantarum 2 and L. delbrueckii. The three isolates and B. salmalaya 139SI exhibited tolerance to gastric acid of pH 3.5, resis...

The ESAFS 2022 Book of Abstracts was published for the 15th International Conference of the East and Southeast Asia Federation of Soil Science Societies (ESAFS 2022), which was held at Royale Chulan Hotel, Kuala Lumpur Malaysia on August 22-26, 2022. It was organized by Malaysian Society of Soil Science (MSSS) in collaboration with Institute of Bio...

Mangrove ecosystems are crucial for ecological processes. However, mangrove forests are currently under peril due to urbanization, aquaculture expansion, and growing pollutant burdens. Marine debris including organic deposits (ODs) is intentionally or unintentionally deposited into the marine environment, which could alter the natural ecology of t...

Slope erosion and shallow failures occur in developed areas in Malaysia as a result of the natural vegetation removal, resulting in soil disturbance and greater exposure of bare ground. The use of bioengineering techniques through vegetation is a preferred solution to these problems by providing cover from rainfall and reinforcing the soil through...

Slope erosion and shallow failures occur in developed areas in Malaysia as a result of the natural vegetation removal, resulting in soil disturbance and greater exposure of bare ground. The use of bioengineering techniques through vegetation is a preferred solution to these problems by providing cover from rainfall and reinforcing the soil through...

Solid waste disposal, particularly of plastic and rubber, significantly impacts the environment and human health; thus, encouraging consumers to u sustainable alternatives is essential to ensure a resilient future. In recent decades, bio-based material research has primarily focused on bioplastics and, accordingly, current knowledge of alternative...

Amelioration of soil acidity can boost soil fertility, hence increasing nutrient uptake, secondary metabolite, and its antioxidant potential. In the present study, the effectiveness of food waste compost and palm kernel biochar was assessed as soil amendments for Melastoma malabathricum L. grown in acidic soil conditions. A six-month greenhouse stu...

Durio zibethinus L. (durian) belongs to the Malvaceae family. It is known as the “King of Tropical Fruit” because of its unique characteristics. The edible part of durian, however, is only about 33% of the fruit while the non-edible parts such as the seed and peels (rinds) are considered as fruit waste responsible for environmental pollution. Thus,...

The rapid urbanization and industrialization mainly in developing countries significantly increase the atmospheric deposition of heavy metals, raising concern to public health due to their ability to persist in the environment for prolonged periods. Bioaccumulation in a food chain results to heavy metal toxicity at high concentrations. Earlier stud...

Biochar emerges as a carrier for microorganisms in various biotechnological fields. The interest on this carbonaceous material stems from its physicochemical properties and microenvironment which can potentially harbor bacteria. We conducted a batch experiment to study the adhesion behavior of Bacillus salmalaya 139SI and Bacillus amyloliquefaciens...

Soil acidification prevents the elongation of roots, which is one of the major constraints to crop productivity. Proper acidic soil amelioration can improve soil fertility, resulting in an increase in plant physiological processes and the survival of the plants. The interaction of physiological responses and root profiles in Melastoma malabathricum...

Biochar Malaysia Association International Conference 2021(BMAIC 2021) wishes to recognize the significant values of biochar to our agriculture and environment. In-line with United Nation Sustainable Development (SD) Goal No. 2 which supports “Zero Hunger” , biochar promotes agricultural sector by remediation of infertile soil, boost germination an...

Biochar is a sustainable approach to greening the environment with its unique ability to improve soil fertility, increase crop yields, carbon sequestration, and retain soil moisture. Although multiple studies have reported on the benefits of biochar as an amendment on agricultural lands, less is known about its effects of palm kernel shell biochar...

Normally, mangroves forest appears in zones of dominant species, and the possible reason underlying behind it could also relate to mangrove soils. Knowledge on mineralogy of soils allows us to understand the physicochemical condition occurring in the soil environment and can be used as tracer of the soil origin. Therefore, this study was carried ou...

Controlled release fertilizer (CRF) plays a crucial yet necessary part in the sustainable agriculture industry. An alarming rise in call for crop production directly influences the increasing need for synthetically derived fertilizers and pesticides production. The application of CRF has been a gamechanger as an environmentally sustainable pathway...

Excessive use of agrochemicals caused by the increasing demand for food is a worrying issue in the developing nations. Thus, sustainable approach of using biochar as an inoculant carrier for the plant growth promoting rhizobacteria (PGPR) is receiving a considerable amount of attention. In the present study, suitability of palm kernel shell (PKS) b...

Water and soil qualities play significant roles in the farming of giant freshwater prawn. The study evaluated water and soil qualities for giant freshwater prawn farming site suitability by using Analytic Hierarchy Process (AHP) and Geographic Information System (GIS) in Jelebu, Malaysia. The water quality parameters measured were biochemical oxyge...

Soil quality and fertility deterioration due to the development in urban areas can cause a significant limitation on the yield and sustainability of crops. A field study was done to investigate the effects of biochar and compost application on soil properties and growth performance of Amaranthus sp. grown at urban community garden in Taman Seri Sen...

The relationship between physicochemical and morphology properties of biochar derived from oil palm trunk (BOPT) as a potential candidate in the production of high-performance activated carbon was intensively investigated. The biochar was prepared using various pyrolysis temperature and pyrolysis time to study the relationship of both parameters on...

This book is a collection of urban farming practices by UPM students, which were conducted as part of a mini project for their agriculture course during the COVID-19 pandemic. What started off as an academic assignment, slowly became a new lifestyle for these students. The participating students found that cultivating plants at home was a liber...

Mangrove forests degradation is happening globally at an alarming rate since the 80’s. Land conversion for human activities is one of many reasons contributing to the issue. The access the Knowledge, Attitude and Practice (KAP) on the function and conservation of mangrove, data was collected in Kuala Langat, Selangor within the vicinity of Sijangka...

In recent years, soil amendments have been widely used in agriculture to improve the soil quality, plant production and quality, and reduce the fertilizer usage. Thus, current study was carried out to investigate the effects of palm kernel biochar and food waste compost on soil properties, plant growth performance and physiological responses of Cor...

Metal contamination problems have become common everywhere with several known cases of metal toxicity in the agriculture sector. Metals including copper (Cu) are important to plant metabolism in trace amounts; however, excessive amounts can cause toxicity to the plants. The biochars have potential to absorb these trace elements in soil. A study was...

Soil acidity is one of the key limitations that hinder plant development, especially on an acidic slope. Soil amendments such as ground magnesium limestone, compost and biochar are often utilized as a technique to restore soil fertility and promote plant growth. However, studies on the effect of biochar amelioration on plants grown on acidic soil a...

Organic amendments have the potential to improve plant growth and physiological performance but this effect is minimally explored in Malaysian slope species. In this experiment, the best treatment will be determined based on the effects of three organic amendments (20 t/ha biochar, compost, or vermicompost) and fertiliser on the growth and physiolo...

Rapid industrialization at Kuala Langat, Selangor have raised environmental and health concerns among the public. Surface sediments from a total of 10 stations, covering the upstream and downstream sites near to plastic recycling factories along Langat River were collected and analyzed for its physicochemical properties, bioavailable heavy metals c...

Oil palms (Elaeis guineensis) are generally able to grow economically and feasibly on various soil types, mostly in tropical countries. However, oil palms planted on acid sulfate soils were producing lesser Fresh Fruit Bunches (FFB) as compared to those on non-acid sulfate soils. The poor performance of oil palms planted on acid sulfate was mainly...

The full dependency on chemical fertilizers in oil palm plantation poses an enormous threat to the ecosystem through the degradation of soil and water quality through leaching to the groundwater and contaminating the river. A greenhouse study was conducted to test the effect of combinations of biofertilizers with chemical fertilizer focusing on the...

Soil Conference Proceedings

The dependence on chemical fertilizers and pesticides to increase agricultural outputs owing to the demands of a growing human population creates the need for a sustainable fertilizer. Biochar is presently a promising candidate as an inoculant carrier, given its highly porous structure, with nutrients naturally derived from the biomass, high water,...

Vermicompost is a nutrient-rich organic waste produced from earthworms that is beneficial in enhancing the soil condition and has been reported to aid in improving the crop yield and quality. In the present study, a field trial was conducted using a randomized complete block design with four replicates to elucidate the effects of vermicompost appli...

Bananas and plantains are perennial crops that grow quickly and can be harvested all year round. According to the FAO, bananas are the eighth most important food crop in the world and the fourth most important food crop among the world’s least-developed countries with production of over 105 million tons per year. Through trade and supply, bananas m...

Arsenic is a global environmental contaminant that imposes a big health threat which requires an immediate attention to clean-up the contaminated areas. This study examined the biosorption ability of a novel Bacillus strain for the removal of arsenate (pentavalent arsenic) from aqueous solution. The optimum biosorption condition was studied as a fu...

Plant growth promoting rhizobacteria (PGPR) are a group of bacteria that can enhance plant growth. In fact, PGPR are biologically unstable and the bacteria activity degrades over time due to environmental factors, survival rate in soils, the compatibility with the crop and the interaction ability with the indigenous microflora in soil. Therefore, t...

Deterioration of environmental quality in estuaries leads to a high risk of destruction of marine life. Heavy metal (Mn, As, Cu, Zn, and Pb) concentration in mangrove sediment in the Klang estuary was evaluated to identify any potential risk of contamination resulting from the rapid development along the Klang river. Several indicators were used to...

Vermicompost is an organic waste produced from earthworms that can enhance the soil condition and is rich with essential plant nutrients, thus increasing produce quality and shelf life. In this study, a one-year field trial was conducted to elucidate the effects of vermicompost supplementation on the composition of bioactive compounds and antioxida...

Soil microbial properties are frequently used as indicators of soil fertility. However, the linkage of these properties with crop biomass is poorly documented especially in biochar amended soil with high carbon:nitrogen (C:N). A short-term field trial was conducted to observe the growth response of maize to biochar treatment in a highly weathered U...

This study was carried out to evaluate the distribution, enrichment and ecological risk of heavy metals (arsenic (As), zinc (Zn), manganese (Mn), copper (Cu) and lead (Pb)) concentration in Kuala Selangor estuary at the Kuala Selangor Nature Park. The results suggested that As and Pb in sediment were as high as the background value, suggesting the...

Sustainable crop production for a rapidly growing human population is one of the current challenges faced by the agricultural sector. However, many of the chemical agents used in agriculture can be hazardous to humans, non‐targeted organism and environment. Plant growth promoting rhizobacteria have demonstrated role in promoting plant growth and he...

Vermicompost is the product of composting or breaking down organic matter through the use of earthworms. It is rich in essential plant nutrients, and has the ability to enhance the condition and increase the quality of the soil. In the present study, a field trial was conducted from January 2015 until March 2016 to elucidate the effects of vermicom...

This study was carried out to evaluate the distribution, enrichment and ecological risk of heavy metals (arsenic (As), zinc (Zn), manganese (Mn), copper (Cu) and lead (Pb)) concentration in Kuala Selangor estuary at the Kuala Selangor Nature Park. The results suggested that As and Pb in sediment were as high as the background value, suggesting the...

In Malaysia, about 0.5 million ha of acid sulfate soils are found scattered over the east, west, and Sabah and Sarawak regions that can potentially be cultivated with paddy. This type of soil is acidic and not immediately suitable for crop production unless improved by applying some amendments. Thus, the current study was carried out to investigate...

Microalgal biomass is the third-generation promising feedstock for production of biofuel and other valuable goods. The raw microalgal biomass and residues have low calorific value, high moisture, and high H/C and O/C atomic ratio which not suitable to use as solid fuel and many engineering applications. Torrefaction is a promising technique to upgr...

Biochar is known to ameliorate soil fertility and improve crop production but information regarding soil microbiota responses on biochar amendment remains limited. The experiment was conducted to study the effect of biochars from palm kernel (pyrolysed at 400 °C) and rice husk (gasified at 800 °C) in a sandy loam Acrisol from Peninsular Malaysia. T...

Plant-microbe interaction is one of the most im